Lincoln Navigator: Front Seats / Front Seats. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Body and Paint / Front Seats / Front Seats. Diagnosis and Testing

DTC Chart: DDM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

DDM DTC Chart

DTC	Description	Action
B1C03:23	Memory #1 Switch: Signal Stuck Low	GO to Pinpoint Test K
B1C04:23	Memory #2 Switch: Signal Stuck Low	GO to Pinpoint Test K
B1C05:23	Memory #3 Switch: Signal Stuck Low	GO to Pinpoint Test K
All other Diagnostic Trouble Codes (DTCs)	-	REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).

DTC Chart: PDM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PDM DTC Chart

DTC	Description	Action
B1C03:23	Memory #1 Switch: Signal Stuck Low	GO to Pinpoint Test C
B1C04:23	Memory #2 Switch: Signal Stuck Low	GO to Pinpoint Test C
B1C05:23	Memory #3 Switch: Signal Stuck Low	GO to Pinpoint Test C
All other Diagnostic Trouble Codes (DTCs)	-	REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).

DTC Chart: DSM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

DSM DTC Chart

DTC	Description	Action
B1029:11	Accelerator Pedal Sensor: Circuit Short To Ground	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B1029:15	Accelerator Pedal Sensor: Circuit Short To Battery or Open	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B1060:11	Seat Headrest Motor Output: Circuit Short To Ground	GO to Pinpoint Test O
B1060:12	Seat Headrest Motor Output: Circuit Short To Battery	GO to Pinpoint Test O
B1060:13	Seat Headrest Motor Output: Circuit Open	GO to Pinpoint Test O
B1067:24	Lumbar In Switch: Signal Stuck High	GO to Pinpoint Test AC
B1068:24	Lumbar Out Switch: Signal Stuck High	GO to Pinpoint Test AC
B106D:24	Headrest Up Switch: Signal Stuck High	GO to Pinpoint Test AC
B106E:24	Headrest Down Switch: Signal Stuck High	GO to Pinpoint Test AC
B1087:83	LIN Bus "A": Value of Signal Protection Calculation Incorrect	GO to Pinpoint Test AA
B1087:87	LIN Bus "A": Missing Message	GO to Pinpoint Test AA
B11D1:83	LIN Bus "C": Value of Signal Protection Calculation Incorrect	GO to Pinpoint Test O
B11D1:87	LIN Bus "C": Missing Message	GO to Pinpoint Test O
B1298:24	Steering Column Adjust Up Switch: Signal Stuck High	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1299:24	Steering Column Adjust Down Switch: Signal Stuck High	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A1:24	Steering Column Adjust Out Switch: Signal Stuck High	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A2:24	Steering Column Adjust In Switch: Signal Stuck High	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A7:11	Steering Column Tilt Sensor A: Circuit Short To Ground	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A7:15	Steering Column Tilt Sensor A: Circuit Short To Battery or Open	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A8:11	Steering Column Telescope Sensor A: Circuit Short To Ground	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A8:15	Steering Column Telescope Sensor A: Circuit Short To Battery or Open	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:11	Steering Column Tilt Motor: Circuit Short To Ground	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:12	Steering Column Tilt Motor: Circuit Short To Battery	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:13	Steering Column Tilt Motor: Circuit Open	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137D:11	Pedal Adjustment Motor: Circuit Short To Ground	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B137D:12	Pedal Adjustment Motor: Circuit Short To Battery	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B137D:13	Pedal Adjustment Motor: Circuit Open	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B137E:11	Steering Column Telescope Motor: Circuit Short To Ground	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:12	Steering Column Telescope Motor: Circuit Short To Battery	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:13	Steering Column Telescope Motor: Circuit Open	REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B14C3:24	Seat Height Rear Down Switch: Signal Stuck High	GO to Pinpoint Test AC
B14C4:24	Seat Height Rear Up Switch: Signal Stuck High	GO to Pinpoint Test AC
B14C5:24	Seat Headrest Forward Switch: Signal Stuck High	GO to Pinpoint Test AC
B14C6:24	Seat Headrest Rearward Switch: Signal Stuck High	GO to Pinpoint Test AC
B14C7:24	Adjustable Pedal Forward Switch: Signal Stuck High	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B14C8:24	Adjustable Pedal Rearward Switch: Signal Stuck High	REFER to: Hydraulic Brake Actuation (206-06 Hydraulic Brake Actuation, Diagnosis and Testing).
B14CE:11	Seat Horizontal Motor Output: Circuit Short To Ground	GO to Pinpoint Test I
B14CE:12	Seat Horizontal Motor Output: Circuit Short To Battery	GO to Pinpoint Test I
B14CE:13	Seat Horizontal Motor Output: Circuit Open	GO to Pinpoint Test I
B14CF:11	Seat Recline Motor Output: Circuit Short To Ground	GO to Pinpoint Test I
B14CF:12	Seat Recline Motor Output: Circuit Short To Battery	GO to Pinpoint Test I
B14CF:13	Seat Recline Motor Output: Circuit Open	GO to Pinpoint Test I
B14D0:11	Seat Height Front/Tilt Motor Output: Circuit Short To Ground	GO to Pinpoint Test I
B14D0:12	Seat Height Front/Tilt Motor Output: Circuit Short To Battery	GO to Pinpoint Test I
B14D0:13	Seat Height Front/Tilt Motor Output: Circuit Open	GO to Pinpoint Test I
B14D2:11	Seat Height Rear Motor Output: Circuit Short To Ground	GO to Pinpoint Test I
B14D2:12	Seat Height Rear Motor Output: Circuit Short To Battery	GO to Pinpoint Test I
B14D2:13	Seat Height Rear Motor Output: Circuit Open	GO to Pinpoint Test I
B151F:11	Left Cushion Motor Output: Circuit Short To Ground	GO to Pinpoint Test N
B151F:12	Left Cushion Motor Output: Circuit Short To Battery	GO to Pinpoint Test N
B151F:13	Left Cushion Motor Output: Circuit Open	GO to Pinpoint Test N
B1520:11	Right Cushion Motor Output: Circuit Short To Ground	GO to Pinpoint Test N
B1520:12	Right Cushion Motor Output: Circuit Short To Battery	GO to Pinpoint Test N
B1520:13	Right Cushion Motor Output: Circuit Open	GO to Pinpoint Test N
B1521:11	Upper Back Pivot Motor Output: Circuit Short To Ground	GO to Pinpoint Test M
B1521:12	Upper Back Pivot Motor Output: Circuit Short To Battery	GO to Pinpoint Test M
B1521:13	Upper Back Pivot Motor Output: Circuit Open	GO to Pinpoint Test M
B1522:11	Lumbar Motor Output: Circuit Short To Ground	GO to Pinpoint Test J
B1522:12	Lumbar Motor Output: Circuit Short To Battery	GO to Pinpoint Test J
B1522:13	Lumbar Motor Output: Circuit Open	GO to Pinpoint Test J
B1527:24	Left Cushion Fore Switch: Signal Stuck High	GO to Pinpoint Test AC
B1528:24	Left Cushion Aft Switch: Signal Stuck High	GO to Pinpoint Test AC
B1529:24	Right Cushion Fore Switch: Signal Stuck High	GO to Pinpoint Test AC
B152A:24	Right Cushion Aft Switch: Signal Stuck High	GO to Pinpoint Test AC
B152B:24	Upper Back Pivot Fore Switch: Signal Stuck High	GO to Pinpoint Test AC
B152C:24	Upper Back Pivot Aft Switch: Signal Stuck High	GO to Pinpoint Test AC
B1679:96	Headrest: Component Internal Failure	GO to Pinpoint Test O
B1B96:24	Seat Slide Forward Switch: Signal Stuck High	GO to Pinpoint Test AC
B1B97:24	Seat Slide Backward Switch: Signal Stuck High	GO to Pinpoint Test AC
B1B98:24	Seat Tilt Up Switch: Signal Stuck High	GO to Pinpoint Test AC
B1B99:24	Seat Tilt Down Switch: Signal Stuck High	GO to Pinpoint Test AC
B1C00:24	Seat Recline Up Switch: Signal Stuck High	GO to Pinpoint Test AC
B1C01:24	Seat Recline Down Switch: Signal Stuck High	GO to Pinpoint Test AC
U0100:00	Lost Communication with ECM/PCM "A": No Sub Type Information	GO to Pinpoint Test R
U0140:00	Lost Communication with Body Control Module: No Sub Type Information	GO to Pinpoint Test S
U0199:00	Lost Communication With "Door Control Module A": No Sub Type Information	GO to Pinpoint Test T
U0212:00	Lost Communication with Steering Column Control Module: No Sub Type Information	GO to Pinpoint Test V
U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	GO to Pinpoint Test W
U2013:24	Switch Pack: Signal Stuck High	GO to Pinpoint Test AC
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test X
U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test Y
U3500:17	Control Module Input Power "A" Circuit Range/Performance: Circuit Voltage Above Threshold	GO to Pinpoint Test Z

DTC Chart: SCMB

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

SCMB DTC Chart

DTC	Description	Action
B1060:11	Seat Headrest Motor Output: Circuit Short To Ground	GO to Pinpoint Test G
B1060:12	Seat Headrest Motor Output: Circuit Short To Battery	GO to Pinpoint Test G
B1060:13	Seat Headrest Motor Output: Circuit Open	GO to Pinpoint Test G
B1067:24	Lumbar In Switch: Signal Stuck High	GO to Pinpoint Test AD
B1068:24	Lumbar Out Switch: Signal Stuck High	GO to Pinpoint Test AD
B106D:24	Headrest Up Switch: Signal Stuck High	GO to Pinpoint Test AD
B106E:24	Headrest Down Switch: Signal Stuck High	GO to Pinpoint Test AD
B1087:83	LIN Bus "A": Value of Signal Protection Calculation Incorrect	GO to Pinpoint Test AB
B1087:87	LIN Bus "A": Missing Message	GO to Pinpoint Test AB
B11D1:83	LIN Bus "C": Value of Signal Protection Calculation Incorrect	GO to Pinpoint Test G
B11D1:87	LIN Bus "C": Missing Message	GO to Pinpoint Test G
B14C3:24	Seat Height Rear Down Switch: Signal Stuck High	GO to Pinpoint Test AD
B14C4:24	Seat Height Rear Up Switch: Signal Stuck High	GO to Pinpoint Test AD
B14C5:24	Seat Headrest Forward Switch: Signal Stuck High	GO to Pinpoint Test AD
B14C6:24	Seat Headrest Rearward Switch: Signal Stuck High	GO to Pinpoint Test AD
B14CE:11	Seat Horizontal Motor Output: Circuit Short To Ground	GO to Pinpoint Test A
B14CE:12	Seat Horizontal Motor Output: Circuit Short To Battery	GO to Pinpoint Test A
B14CE:13	Seat Horizontal Motor Output: Circuit Open	GO to Pinpoint Test A
B14CF:11	Seat Recline Motor Output: Circuit Short To Ground	GO to Pinpoint Test A
B14CF:12	Seat Recline Motor Output: Circuit Short To Battery	GO to Pinpoint Test A
B14CF:13	Seat Recline Motor Output: Circuit Open	GO to Pinpoint Test A
B14D0:11	Seat Height Front/Tilt Motor Output: Circuit Short To Ground	GO to Pinpoint Test A
B14D0:12	Seat Height Front/Tilt Motor Output: Circuit Short To Battery	GO to Pinpoint Test A
B14D0:13	Seat Height Front/Tilt Motor Output: Circuit Open	GO to Pinpoint Test A
B14D2:11	Seat Height Rear Motor Output: Circuit Short To Ground	GO to Pinpoint Test A
B14D2:12	Seat Height Rear Motor Output: Circuit Short To Battery	GO to Pinpoint Test A
B14D2:13	Seat Height Rear Motor Output: Circuit Open	GO to Pinpoint Test A
B151F:11	Left Cushion Motor Output: Circuit Short To Ground	GO to Pinpoint Test F
B151F:12	Left Cushion Motor Output: Circuit Short To Battery	GO to Pinpoint Test F
B151F:13	Left Cushion Motor Output: Circuit Open	GO to Pinpoint Test F
B1520:11	Right Cushion Motor Output: Circuit Short To Ground	GO to Pinpoint Test F
B1520:12	Right Cushion Motor Output: Circuit Short To Battery	GO to Pinpoint Test F
B1520:13	Right Cushion Motor Output: Circuit Open	GO to Pinpoint Test F
B1521:11	Upper Back Pivot Motor Output: Circuit Short To Ground	GO to Pinpoint Test E
B1521:12	Upper Back Pivot Motor Output: Circuit Short To Battery	GO to Pinpoint Test E
B1521:13	Upper Back Pivot Motor Output: Circuit Open	GO to Pinpoint Test E
B1522:11	Lumbar Motor Output: Circuit Short To Ground	GO to Pinpoint Test B
B1522:12	Lumbar Motor Output: Circuit Short To Battery	GO to Pinpoint Test B
B1522:13	Lumbar Motor Output: Circuit Open	GO to Pinpoint Test B
B1527:24	Left Cushion Fore Switch: Signal Stuck High	GO to Pinpoint Test AD
B1528:24	Left Cushion Aft Switch: Signal Stuck High	GO to Pinpoint Test AD
B1529:24	Right Cushion Fore Switch: Signal Stuck High	GO to Pinpoint Test AD
B152A:24	Right Cushion Aft Switch: Signal Stuck High	GO to Pinpoint Test AD
B152B:24	Upper Back Pivot Fore Switch: Signal Stuck High	GO to Pinpoint Test AD
B152C:24	Upper Back Pivot Aft Switch: Signal Stuck High	GO to Pinpoint Test AD
B1679:96	Headrest: Component Internal Failure	GO to Pinpoint Test G
B1B96:24	Seat Slide Forward Switch: Signal Stuck High	GO to Pinpoint Test AD
B1B97:24	Seat Slide Backward Switch: Signal Stuck High	GO to Pinpoint Test AD
B1B98:24	Seat Tilt Up Switch: Signal Stuck High	GO to Pinpoint Test AD
B1B99:24	Seat Tilt Down Switch: Signal Stuck High	GO to Pinpoint Test AD
B1C00:24	Seat Recline Up Switch: Signal Stuck High	GO to Pinpoint Test AD
B1C01:24	Seat Recline Down Switch: Signal Stuck High	GO to Pinpoint Test AD
U0100:00	Lost Communication with ECM/PCM "A": No Sub Type Information	GO to Pinpoint Test R
U0140:00	Lost Communication with Body Control Module: No Sub Type Information	GO to Pinpoint Test S
U0199:00	Lost Communication With "Door Control Module A": No Sub Type Information	GO to Pinpoint Test U
U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	GO to Pinpoint Test W
U2013:24	Switch Pack: Signal Stuck High	GO to Pinpoint Test AD
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test X
U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test Y
U3500:17	Control Module Input Power "A" Circuit Range/Performance: Circuit Voltage Above Threshold	GO to Pinpoint Test Z

DTC Chart: SCME

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

SCME DTC Chart

DTC	Description	Action
B1153:4B	Driver Seat Cushion: Over Temperature	GO to Pinpoint Test AE
B1208:01	Driver Seat Cushion Temperature Sensor: General Electrical Failure	GO to Pinpoint Test AE
B1208:11	Driver Seat Cushion Temperature Sensor: Circuit Short To Ground	GO to Pinpoint Test AE
B1208:15	Driver Seat Cushion Temperature Sensor: Circuit Short To Battery or Open	GO to Pinpoint Test AE
B1208:2A	Driver Seat Cushion Temperature Sensor: Signal Stuck In Range	GO to Pinpoint Test AE
B14B9:11	Driver Seat Cushion Thermal Electric Device: Circuit Short To Ground	GO to Pinpoint Test AE
B14B9:12	Driver Seat Cushion Thermal Electric Device: Circuit Short To Battery	GO to Pinpoint Test AE
B14B9:13	Driver Seat Cushion Thermal Electric Device: Circuit Open	GO to Pinpoint Test AE
B14BD:11	Driver Seat Cushion Blower: Circuit Short To Ground	GO to Pinpoint Test AG
B14BD:13	Driver Seat Cushion Blower: Circuit Open	GO to Pinpoint Test AG
B1562:11	Driver Seat Back Blower Speed: Circuit Short To Ground	GO to Pinpoint Test AG
B1562:12	Driver Seat Back Blower Speed: Circuit To Battery	GO to Pinpoint Test AG
B1564:11	Driver Seat Cushion Blower Speed: Circuit Short To Ground	GO to Pinpoint Test AG
B1564:12	Driver Seat Cushion Blower Speed: Circuit To Battery	GO to Pinpoint Test AG
U0140:00	Lost Communication with Body Control Module: No Sub Type Information	GO to Pinpoint Test AI
U0257:00	Lost Communication with Front Controls / Display Interface Module: No Sub Type Information	GO to Pinpoint Test AK
U1000:00	Solid State Driver Protection Active -Driver Disabled: No Sub Type Information	GO to Pinpoint Test AM
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AO
U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test AQ

DTC Chart: SCMF

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

SCMF DTC Chart

DTC	Description	Action
B1151:4B	Passenger Seat Cushion: Over Temperature	GO to Pinpoint Test AF
B120A:11	Passenger Seat Cushion Temperature Sensor: Circuit Short To Ground	GO to Pinpoint Test AF
B120A:15	Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery or Open	GO to Pinpoint Test AF
B120A:2A	Passenger Seat Cushion Temperature Sensor: Signal Stuck In Range	GO to Pinpoint Test AF
B14BB:11	Passenger Seat Cushion Thermal Electric Device: Circuit Short To Ground	GO to Pinpoint Test AF
B14BB:12	Passenger Seat Cushion Thermal Electric Device: Circuit Short To Battery	GO to Pinpoint Test AF
B14BB:13	Passenger Seat Cushion Thermal Electric Device: Circuit Open	GO to Pinpoint Test AF
B14C0:11	Passenger Seat Cushion Blower: Circuit Short To Ground	GO to Pinpoint Test AH
B14C0:13	Passenger Seat Cushion Blower: Circuit Open	GO to Pinpoint Test AH
B1563:11	Passenger Seat Back Blower Speed: Circuit Short To Ground	GO to Pinpoint Test AH
B1563:12	Passenger Seat Back Blower Speed: Circuit Short To Battery	GO to Pinpoint Test AH
B1565:11	Passenger Seat Cushion Blower Speed: Circuit Short To Ground	GO to Pinpoint Test AH
B1565:12	Passenger Seat Cushion Blower Speed: Circuit Short To Battery	GO to Pinpoint Test AH
U0140:00	Lost Communication with Body Control Module: No Sub Type Information	GO to Pinpoint Test AJ
U0257:00	Lost Communication with Front Controls / Display Interface Module: No Sub Type Information	GO to Pinpoint Test AL
U1000:00	Solid State Driver Protection Active -Driver Disabled: No Sub Type Information	GO to Pinpoint Test AN
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AP
U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test AR

DTC Chart: SCMG

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

SCMG DTC Chart

DTC	Description	Action
B146F:00	Back Bladder System Electropneumatic Failure: No Sub Type Information	GO to Pinpoint Test AS
B146F:04	Back Bladder System Electropneumatic Failure: System Internal Failure	GO to Pinpoint Test AS
B146F:87	Back Bladder System Electropneumatic Failure: Missing Message	GO to Pinpoint Test AS
B1470:00	Cushion Bladder System Electropneumatic Failure: No Sub Type Information	GO to Pinpoint Test AS
B1470:04	Cushion Bladder System Electropneumatic Failure: System Internal Failure	GO to Pinpoint Test AS
B1470:87	Cushion Bladder System Electropneumatic Failure: Missing Message	GO to Pinpoint Test AS
B1473:11	Pump Driver: Circuit Short To Ground	GO to Pinpoint Test AS
U0140:00	Lost Communication With Body Control Module: No Sub Type Information	GO to Pinpoint Test AU
U0208:00	Lost Communication With "Seat Control Module A": No Sub Type Information	GO to Pinpoint Test AV
U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	GO to Pinpoint Test AX
U0256:00	Lost Communication With Front Controls Interface Module "A": No Sub Type Information	GO to Pinpoint Test AY
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test BA
U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test BB

DTC Chart: SCMH

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

SCMH DTC Chart

DTC	Description	Action
B146F:00	Back Bladder System Electropneumatic Failure: No Sub Type Information	GO to Pinpoint Test AT
B146F:04	Back Bladder System Electropneumatic Failure: System Internal Failure	GO to Pinpoint Test AT
B146F:87	Back Bladder System Electropneumatic Failure: Missing Message	GO to Pinpoint Test AT
B1470:00	Cushion Bladder System Electropneumatic Failure: No Sub Type Information	GO to Pinpoint Test AT
B1470:04	Cushion Bladder System Electropneumatic Failure: System Internal Failure	GO to Pinpoint Test AT
B1470:87	Cushion Bladder System Electropneumatic Failure: Missing Message	GO to Pinpoint Test AT
B1473:11	Pump Driver: Circuit Short To Ground	GO to Pinpoint Test AT
U0140:00	Lost Communication With Body Control Module: No Sub Type Information	GO to Pinpoint Test AU
U0208:00	Lost Communication With "Seat Control Module A": No Sub Type Information	GO to Pinpoint Test AV
U024B:00	Lost Communication with Seat Control Module "G": No Sub Type Information	GO to Pinpoint Test AW
U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	GO to Pinpoint Test AX
U0256:00	Lost Communication With Front Controls Interface Module "A": No Sub Type Information	GO to Pinpoint Test AY
U0455:82	Invalid Data Received From Restraints Occupant Classification System Module: Alive / Sequence Counter Incorrect / Not Updated	GO to Pinpoint Test AZ
U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test BA
U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test BB

Symptom Chart(s)

Symptom Chart: Front Seats

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart

Condition	Possible Sources	Actions
No communication with the DDM	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the DSM	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the FCIM module	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the PDM	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the SCMB	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the SCME	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the SCMF	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the SCMG	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No communication with the SCMH	Refer to the Pinpoint Test	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
The passenger seat does not operate horizontally/vertically/recline using the seat control switch	Refer to the Pinpoint Test	GO to Pinpoint Test A
The power lumbar is inoperative — passenger, without multi-contour seats	Refer to the Pinpoint Test	GO to Pinpoint Test B
The passenger memory seat does not operate using the memory SET switch	Refer to the Pinpoint Test	GO to Pinpoint Test C
The passenger memory seat does not move to the correct memory position	Refer to the Pinpoint Test	GO to Pinpoint Test D
The upper backrest pivot is inoperative — passenger	Refer to the Pinpoint Test	GO to Pinpoint Test E
The cushion extension is inoperative — passenger	Refer to the Pinpoint Test	GO to Pinpoint Test F
The power head restraint is inoperative — passenger	Refer to the Pinpoint Test	GO to Pinpoint Test G
The passenger seat is inoperative/does not operate correctly using the redundant/chauffeur switch only	Refer to the Pinpoint Test	GO to Pinpoint Test H
The driver memory seat does not operate horizontally/vertically/recline using the seat control switch	Refer to the Pinpoint Test	GO to Pinpoint Test I
The power lumbar is inoperative — driver, without multi-contour seats	Refer to the Pinpoint Test	GO to Pinpoint Test J
The driver memory seat does not operate using the memory SET switch	Refer to the Pinpoint Test	GO to Pinpoint Test K
The driver memory seat does not move to the correct memory position	Refer to the Pinpoint Test	GO to Pinpoint Test L
The driver memory seat does not operate when using the RKE transmitter	Refer to the Pinpoint Test	GO to Pinpoint Test P
Easy entry/easy exit is inoperative/does not operate correctly	Easy entry/exit feature is not enabled Refer to the Pinpoint Test	GO to Pinpoint Test Q
The upper backrest pivot is inoperative — driver	Refer to the Pinpoint Test	GO to Pinpoint Test M
The cushion extension is inoperative — driver	Refer to the Pinpoint Test	GO to Pinpoint Test N
The power head restraint is inoperative — driver	Refer to the Pinpoint Test	GO to Pinpoint Test O
The driver heated seat is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test AE
The passenger heated seat is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test AF
The driver ventilated seat is inoperative/does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test AG
The passenger ventilated seat is inoperative/does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test AH
The multi-contour seat feature is inoperative/does not operate correctly — driver	Refer to the Pinpoint Test	GO to Pinpoint Test AS
The multi-contour seat feature is inoperative/does not operate correctly — passenger	Refer to the Pinpoint Test	GO to Pinpoint Test AT

Pinpoint Test(s)

PINPOINT TEST A: THE PASSENGER SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B14CE:11	Seat Horizontal Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CE:12	Seat Horizontal Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CE:13	Seat Horizontal Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CF:11	Seat Recline Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CF:12	Seat Recline Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14CF:13	Seat Recline Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D0:11	Seat Height Front/Tilt Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D0:12	Seat Height Front/Tilt Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D0:13	Seat Height Front/Tilt Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D2:11	Seat Height Rear Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D2:12	Seat Height Rear Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B14D2:13	Seat Height Rear Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Fuse
Wiring, terminals or connectors
Seat control switch
Seat track motor
Seat track
Seat backrest
SCMB

Visual Inspection and Pre-checks

Verify BCMC fuse 31 (30A) is OK.

WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

A1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B14C3:24, B14C4:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, GO to Pinpoint Test AD
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AB
For DTC B14CE:XX, B14CF:XX, B14D0:XX or B14D2:XX, GO to A3
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart in this section.

GO to A2

A2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch in all positions, monitor the following SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the SCMB and monitor the SEAT_TILT_DWN PID
- Access the SCMB and monitor the SEAT_TILT_UP PID
- Access the SCMB and monitor the SEAT_RECL_DWN PID
- Access the SCMB and monitor the SEAT_RECL_UP PID
- Access the SCMB and monitor the SEAT_HGT_DWN PID
- Access the SCMB and monitor the SEAT_HGT_UP PID
- Access the SCMB and monitor the SEAT_BCK_SW PID
- Access the SCMB and monitor the SEAT_FW_SW PID

Do the PID states agree with the switch positions?

Yes

GO to A3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

A3 VERIFY THE SEAT OPERATION

Using the seat control switch, attempt to operate the seat in the following directions:
- Front height up and down
- Rear height up and down
- Horizontal forward and backward
- Recline forward and backward

Does the passenger seat operate correctly?

Yes

The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.

No	If no seat movement occurs, GO to A30 If no front vertical seat movement occurs, GO to A4 If no rear vertical seat movement occurs, GO to A10 If no horizontal seat movement occurs, GO to A16 If no recline seat movement occurs, GO to A22

A4 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-8 Ground

C342B-16 Ground

Is any voltage present?

Yes

GO to A5

GO to A6

A5 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Seat Front Height Motor C3074.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-8 Ground

C342B-16 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to A29

No	INSTALL a new passenger seat track. REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation). GO to A29

A6 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-8 Ground

C342B-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to A8

GO to A7

A7 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Seat Front Height Motor C3074.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-8 Ground

C342B-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29

No	REPAIR the affected circuit. GO to A29

A8 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Seat Front Height Motor C3074.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-8 C3074-3

C342B-16 C3074-1

Are the resistances less than 3 ohms?

Yes

GO to A9

No	REPAIR the affected circuit. GO to A29

A9 CHECK FOR VOLTAGE TO THE FRONT HEIGHT MOTOR

NOTICE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

Connect: SCMB C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3074-1 C3074-3

NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (front height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29

GO to A28

A10 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-2 Ground

C342B-5 Ground

Is any voltage present?

Yes

GO to A11

GO to A12

A11 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Seat Rear Height Motor C3075.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-2 Ground

C342B-5 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to A29

No	INSTALL a new passenger seat track. REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation). GO to A29

A12 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-2 Ground

C342B-5 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to A14

GO to A13

A13 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Seat Rear Height Motor C3075.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-2 Ground

C342B-5 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29

No	REPAIR the affected circuit. GO to A29

A14 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Seat Rear Height Motor C3075.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-2 C3075-1

C342B-5 C3075-3

Are the resistances less than 3 ohms?

Yes

GO to A15

No	REPAIR the affected circuit. GO to A29

A15 CHECK FOR VOLTAGE TO THE REAR HEIGHT MOTOR

Connect: SCMB C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3075-1 C3075-3

NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (rear height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A29

GO to A28

A16 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-14 Ground

C342B-15 Ground

Is any voltage present?

Yes

GO to A17

GO to A18

A17 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Seat Horizontal Motor C332.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-14 Ground

C342B-15 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to A29

No	INSTALL a new passenger seat track motor. REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation). GO to A29

A18 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-14 Ground

C342B-15 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to A20

GO to A19

A19 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Seat Horizontal Motor C332.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-14 Ground

C342B-15 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A29

No	REPAIR the affected circuit. GO to A29

A20 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Seat Horizontal Motor C332.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-14 C332-3

C342B-15 C332-1

Are the resistances less than 3 ohms?

Yes

GO to A21

No	REPAIR the affected circuit. GO to A29

A21 CHECK FOR VOLTAGE TO THE HORIZONTAL MOTOR

Connect: SCMB C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C332-1 C332-3

NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A29

GO to A28

A22 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-7 Ground

C342B-4 Ground

Is any voltage present?

Yes

GO to A23

GO to A24

A23 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Seat Front Recliner Motor C3189.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-7 Ground

C342B-4 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to A29

No	INSTALL a new passenger seat backrest frame. GO to A29

A24 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-7 Ground

C342B-4 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to A26

GO to A25

A25 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Seat Recliner Motor C3189.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-7 Ground

C342B-4 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat backrest frame. GO to A29

No	REPAIR the affected circuit. GO to A29

A26 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Seat Recliner Motor C3189.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-7 C3189-3

C342B-4 C3189-1

Are the resistances less than 3 ohms?

Yes

GO to A27

No	REPAIR the affected circuit. GO to A29

A27 CHECK FOR VOLTAGE TO THE RECLINER MOTOR

Connect: SCMB C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3189-1 C3189-3

NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (recline forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat backrest frame. GO to A29

GO to A28

A28 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to A29

A29 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

A30 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B: THE POWER LUMBAR IS INOPERATIVE — PASSENGER, WITHOUT MULTI-CONTOUR SEATS

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B1522:11	Lumbar Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1522:12	Lumbar Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1522:13	Lumbar Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Front seat power lumbar assembly
SCMB

B1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1067:24 or B1068:24, GO to Pinpoint Test AD
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AB
For DTC B1522:11, B1522:12 or B1522:13, GO to B3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.

GO to B2

B2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the SCMB and monitor the LUMB_IN_SW PID
- Access the SCMB and monitor the LUMB_OUT_SW PID

Do the PID states agree with the switch positions?

Yes

GO to B3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

B3 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-9 Ground

C342B-10 Ground

Is any voltage present?

Yes

GO to B4

GO to B5

B4 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Seat Lumbar Motor C3216.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-9 Ground

C342B-10 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to B10

No	INSTALL a new passenger seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles Without: Multi-Contour Seats (501-10A Front Seats, Removal and Installation). GO to B10

B5 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-9 Ground

C342B-10 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to B7

GO to B6

B6 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Seat Lumbar Motor C3216.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-9 Ground

C342B-10 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles Without: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B10

No	REPAIR the affected circuit. GO to B10

B7 CHECK THE LUMBAR MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Seat Lumbar Motor C3216.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-9 C3216-A

C342B-10 C3216-B

Are the resistances less than 3 ohms?

Yes

GO to B8

No	REPAIR the affected circuit. GO to B10

B8 CHECK FOR VOLTAGE TO THE LUMBAR MOTOR

Connect: SCMB C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3216-A C3216-B

NOTE: Because the lumbar motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles Without: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B10

GO to B9

B9 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to B10

B10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST C: THE PASSENGER MEMORY SEAT DOES NOT OPERATE USING THE MEMORY SET SWITCH

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PDM B1C03:23	Memory #1 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the PDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
PDM B1C04:23	Memory #2 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the PDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
PDM B1C05:23	Memory #3 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the PDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

Possible Sources

Memory seat hard/soft stops not set correctly
Wiring, terminals or connectors
Memory SET control switch
Missing ignition status information
PDM

C1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform self-test on the SCMB and PDM . If the diagnostic scan tool does not communicate to the DSM and/or PDM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any Diagnostic Trouble Codes (DTCs) present?

Yes

For PDM DTC B1C03:23, B1C04:23 or B1C05:23, GO to C2
For all other PDM Diagnostic Trouble Codes (DTCs),
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing). For SCMB Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart.

GO to C2

C2 MONITOR PDM (PASSENGER DOOR MODULE) PARAMETER IDENTIFICATIONS (PIDS) AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS

While activating the memory recall 1, 2 and 3 buttons, monitor the following PDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the PDM and monitor the MEMORY_SW_1 PID
- Access the PDM and monitor the MEMORY_SW_2 PID
- Access the PDM and monitor the MEMORY_SW_3 PID

Do the PID values agree with the switch button positions?

Yes

Using the seat control switch, OPERATE the passenger memory seat to the full travel of each seat axis to reset the hard/soft stops. Operate the system and determine if the concern is still present. If the seat does not operate correctly in any direction, GO to Pinpoint Test A

GO to C3

C3 CHECK THE MEMORY SET SWITCH INPUTS

Ignition OFF.

Disconnect: Passenger Seat Control Switch C680.

Ignition ON.

Monitor the following PDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the PDM and monitor the MEMORY_SW_1 PID
- Access the PDM and monitor the MEMORY_SW_2 PID
- Access the PDM and monitor the MEMORY_SW_3 PID

NOTE: When performing these steps, it is possible that the memory seat may move to a previously stored memory seat position. Monitor the MEMORY_SW_1 switch status PID while momentarily connecting a fused jumper wire as shown:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-11 Ground

Monitor the MEMORY_SW_2 switch status PID while momentarily connecting a fused jumper wire as shown:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-12 Ground

Monitor the MEMORY_SW_3 switch status PID while momentarily connecting a fused jumper wire as shown:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-13 Ground

Do the PID values change when the jumper wire is connected?

Yes

INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

GO to C4

C4 CHECK THE MEMORY SET CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: PDM C652A and C652B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C680-11		Ground
C680-12		Ground
C680-13		Ground

Is any voltage present?

Yes

REPAIR the affected circuit.

GO to C5

C5 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C680-11		Ground
C680-12		Ground
C680-13		Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to C6

No	REPAIR the affected circuit.

C6 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C680-11		C652B-3
C680-12		C652B-5
C680-13		C652B-4

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C680-1		C652A-17

Are the resistances less than 3 ohms?

Yes

GO to C7

No	REPAIR the affected circuit.

C7 CHECK THE PDM (PASSENGER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the PDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the PDM connectors. Make sure they seat and latch correctly.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST D: THE PASSENGER MEMORY SEAT DOES NOT MOVE TO THE CORRECT MEMORY POSITION

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

Memory seat hard/soft stops not correctly set

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST E: THE UPPER BACKREST PIVOT IS INOPERATIVE - PASSENGER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B1521:11	Upper Back Pivot Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1521:12	Upper Back Pivot Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1521:13	Upper Back Pivot Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Seat backrest
SCMB

E1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B152B:24 or B152C:24, GO to Pinpoint Test AD
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AB
For DTC B1521:11, B1521:12 or B1521:13, GO to E3
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart in this section.

GO to E2

E2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the SCMB and monitor the UPB_PIVOT_F_SW PID
- Access the SCMB and monitor the UPB_PIVOT_A_SW PID

Do the PID states agree with the switch positions?

Yes

GO to E3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

E3 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-6 Ground

C342A-16 Ground

Is any voltage present?

Yes

GO to E4

GO to E5

E4 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Seat Upper Pivot Motor C3008.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-6 Ground

C342A-16 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to E10

No	INSTALL a new passenger seat backrest. GO to E10

E5 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-6 Ground

C342A-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to E7

GO to E6

E6 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Seat Upper Pivot Motor C3008.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-6 Ground

C342A-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat backrest. GO to E10

No	REPAIR the affected circuit. GO to E10

E7 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Seat Upper Pivot Motor C3008.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-6 C3008-1

C342A-16 C3008-3

Are the resistances less than 3 ohms?

Yes

GO to E8

No	REPAIR the affected circuit. GO to E10

E8 CHECK FOR VOLTAGE TO THE UPPER PIVOT MOTOR

Connect: SCMB C342A.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3008-1 C3008-3

NOTE: Because the seat motor electrical connector is disconnected, the SCMB may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat backrest. GO to E10

GO to E9

E9 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to E10

E10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST F: THE CUSHION EXTENSION IS INOPERATIVE - PASSENGER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B151F:11	Left Cushion Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B151F:12	Left Cushion Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B151F:13	Left Cushion Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1520:11	Right Cushion Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1520:12	Right Cushion Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1520:13	Right Cushion Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Front seat cushion extension adjuster
SCMB

F1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1527:24, B1528:24, B1529:24 or B152A:24, GO to Pinpoint Test AD
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AB
For DTC B151F:11, B151F:12, B151F:13, B1520:11, B1520:12 or B1520:13, GO to F3
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart in this section.

GO to F2

F2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the SCMB and monitor the L_CUSH_AFT_SW PID
- Access the SCMB and monitor the L_CUSH_FOR_SW PID
- Access the SCMB and monitor the R_CUSH_AFT_SW PID
- Access the SCMB and monitor the R_CUSH_FOR_SW PID

Do the PID states agree with the switch positions?

Yes

GO to F3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

F3 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342A (left cushion extension) or C342B (right cushion extension).

Ignition ON.

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-1 Ground

C342B-11 Ground

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-7 Ground

C342A-17 Ground

Is any voltage present?

Yes

GO to F4

GO to F5

F4 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Passenger Cushion Extension Motor C3815 (LH ) or C3816 (RH ).

Ignition ON.

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-1 Ground

C342B-11 Ground

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-7 Ground

C342A-17 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to F10

No	INSTALL a new passenger seat cushion extension adjuster. REFER to: Front Seat Cushion Extension Adjuster (501-10A Front Seats, Removal and Installation). GO to F10

F5 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-1 Ground

C342B-11 Ground

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-7 Ground

C342A-17 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to F7

GO to F6

F6 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Passenger Cushion Extension Motor C3815 (LH ) or C3816 (RH ).

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-1 Ground

C342B-11 Ground

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-7 Ground

C342A-17 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new passenger seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster (501-10A Front Seats, Removal and Installation).
GO to F10

No	REPAIR the affected circuit. GO to F10

F7 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR AN OPEN

Disconnect: Passenger Cushion Extension Motor C3815 (LH ) or C3816 (RH ).

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342B-1 C3816-1

C342B-11 C3816-3

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-7 C3815-3

C342A-17 C3815-1

Are the resistances less than 3 ohms?

Yes

GO to F8

No	REPAIR the affected circuit. GO to F10

F8 CHECK FOR VOLTAGE TO THE THE CUSHION EXTENSION MOTOR

Connect: SCMB C341A (left cushion extension) or C341B (right cushion extension).

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

(Left) C3815-1 C3815-3

Click to display connectors

Positive Lead Measurement / Action Negative Lead

(Right) C3816-1 C3816-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new passenger seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster (501-10A Front Seats, Removal and Installation).
GO to F10

GO to F9

F9 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to F10

F10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST G: THE POWER HEAD RESTRAINT IS INOPERATIVE - PASSENGER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B1060:11	Seat Headrest Motor Output: Circuit Short To Ground	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1060:12	Seat Headrest Motor Output: Circuit Short To Battery	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B1060:13	Seat Headrest Motor Output: Circuit Open	If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
SCMB B11D1:83	LIN Bus 'C': Value Of Signal Protection Calculation Incorrect	Sets by the SCMB when a loss of communication has been detected from the passenger front head restraint.
SCMB B11D1:87	LIN Bus 'C': Missing Message	Sets by the SCMB when a loss of communication has been detected from the passenger front head restraint.
SCMB B1679:96	Headrest: Component Internal Failure	This DTC indicates there is an internal failure in the passenger front head restraint.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Front head restraint
SCMB

G1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any SCMB Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1679:96, INSTALL a new front head restraint.
REFER to: Front Head Restraint (501-10A Front Seats, Removal and Installation). For DTC B106D:24, B106E:24, B14C5:24 or B14C6:24, GO to Pinpoint Test AD
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AB
For DTC B11D1:83, B11D1:87, B1060:11, B1060:12 or B1060:13, GO to G3
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart in this section.

GO to G2

G2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the SCMB and monitor the HDRST_SW_DWN PID
- Access the SCMB and monitor the HDRST_SW_UP PID
- Access the SCMB and monitor the HDRST_SW_BK PID
- Access the SCMB and monitor the HDRST_SW_FW PID

Do the PID states agree with the switch positions?

Yes

GO to G3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

G3 CHECK FOR POWER AND GROUND TO THE FRONT HEAD RESTRAINT

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: Passenger Front Head Restraint C3058.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3058-1 C3058-9

Is the voltage greater than 11 volts?

Yes

For DTC B11D1:83 or B11D1:87, GO to G4
Otherwise, GO to G5

GO to G5

G4 CHECK THE FRONT HEAD RESTRAINT LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Disconnect: Passenger Front Seat Control Switch C680.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3058-5 C680-2

Is the resistances less than 3 ohms?

Yes

INSTALL a new passenger front head restraint.
REFER to: Front Head Restraint (501-10A Front Seats, Removal and Installation).
GO to G9

No	REPAIR the circuit. GO to G9

G5 CHECK THE FRONT HEAD RESTRAINT CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: SCMB C342A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3058-1 Ground

C3058-9 Ground

Is any voltage present?

Yes

REPAIR the circuit in question. GO to G9

GO to G6

G6 CHECK THE FRONT HEAD RESTRAINT CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3058-1 Ground

C3058-9 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to G7

No	REPAIR the circuit in question. GO to G9

G7 CHECK THE FRONT HEAD RESTRAINT CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3058-1 C342A-8

C3058-9 C342A-18

Are the resistances less than 3 ohms?

Yes

GO to G8

No	REPAIR the circuit in question. GO to G9

G8 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) AND FRONT HEAD RESTRAINT OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors and front head restraint connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors and front head restraint connector. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new front head restraint.
REFER to: Front Head Restraint (501-10A Front Seats, Removal and Installation).
OPERATE the system and determine if the concern is still present. If concern is still present, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to G9

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to G9

G9 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST H: THE PASSENGER SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY USING THE REDUNDANT/CHAUFFEUR SWITCH ONLY

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

Wiring, terminals or connectors
Redundant front seat control switch
SCMB

H1 CHECK THE REDUNDANT/CHAUFFEUR SWITCH GROUND CIRCUITS

Ignition OFF.

Disconnect: Redundant Seat Control Switch C833A and C833B.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833A-2 (Early Production)		Ground
C833A-5 (Late Production)		Ground

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833B-2 (Early Production)		Ground
C833B-5 (Late Production)		Ground

Are the resistances less than 3 ohms?

Yes

GO to H2

No	REPAIR the circuit in question.

H2 CHECK THE REDUNDANT/CHAUFFEUR SWITCH INPUTS

Connect a fused jumper wire to each individual circuit momentarily while observing the front passenger seat operation:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833B-1 (Recline rearward) (Early Production)		Ground
C833B-2 (Recline rearward) (Late Production)		Ground
C833B-3 (Recline forward)		Ground

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833A-1 (Rearward) (Early Production)		Ground
C833A-2 (Rearward) (Late Production)		Ground
C833A-3 (Forward)		Ground

Did the front passenger seat operate correctly when the jumper wire was connected?

Yes

INSTALL a new redundant seat control switch.

GO to H3

H3 CHECK THE REDUNDANT/CHAUFFEUR SWITCH CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833B-1 (Recline rearward) (Early Production)		Ground
C833B-2 (Recline rearward) (Late Production)		Ground
C833B-3 (Recline forward)		Ground

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833A-1 (Rearward) (Early Production)		Ground
C833A-2 (Rearward) (Late Production)		Ground
C833A-3 (Forward)		Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to H7

GO to H4

H4 CHECK THE REDUNDANT/CHAUFFEUR SWITCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833B-1 (Recline rearward) (Early Production)		Ground
C833B-2 (Recline rearward) (Late Production)		Ground
C833B-3 (Recline forward)		Ground

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833A-1 (Rearward) (Early Production)		Ground
C833A-2 (Rearward) (Late Production)		Ground
C833A-3 (Forward)		Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to H5

No	REPAIR the circuit. GO to H7

H5 CHECK THE REDUNDANT/CHAUFFEUR SWITCH CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833B-1 (Recline rearward) (Early Production)		C342A-11
C833B-2 (Recline rearward) (Late Production)		C342A-11
C833B-3 (Recline forward)		C342A-12

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C833A-1 (Rearward) (Early Production)		C342A-3
C833A-2 (Rearward) (Late Production)		C342A-3
C833A-3 (Forward)		C3695F-4

Are the resistances less than 3 ohms?

Yes

GO to H6

No	REPAIR the affected circuit. GO to H7

H6 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to H7

H7 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST I: THE DRIVER MEMORY SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B14CE:11	Seat Horizontal Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CE:12	Seat Horizontal Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CE:13	Seat Horizontal Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CF:11	Seat Recline Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CF:12	Seat Recline Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14CF:13	Seat Recline Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D0:11	Seat Height Front/Tilt Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D0:12	Seat Height Front/Tilt Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D0:13	Seat Height Front/Tilt Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D2:11	Seat Height Rear Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D2:12	Seat Height Rear Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B14D2:13	Seat Height Rear Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Fuse
Wiring, terminals or connectors
Seat control switch
Seat track motor
Seat track
Seat backrest
DSM

Visual Inspection and Pre-checks

Verify BCMC fuse 30 (30A) is OK.

I1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B14C3:24, B14C4:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, GO to Pinpoint Test AC
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AA
For DTC B14CE:XX, B14CF:XX, B14D0:XX or B14D2:XX, GO to I3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart in this section.

GO to I2

I2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch in all positions, monitor the following DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DSM and monitor the SEAT_TILT_DWN PID
- Access the DSM and monitor the SEAT_TILT_UP PID
- Access the DSM and monitor the SEAT_RECL_DWN PID
- Access the DSM and monitor the SEAT_RECL_UP PID
- Access the DSM and monitor the SEAT_HGT_DWN PID
- Access the DSM and monitor the SEAT_HGT_UP PID
- Access the DSM and monitor the SEAT_BCK_SW PID
- Access the DSM and monitor the SEAT_FW_SW PID

Do the PID states agree with the switch positions?

Yes

GO to I3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

I3 VERIFY THE SEAT OPERATION

Using the seat control switch, attempt to operate the seat in the following directions:
- Front height up and down
- Rear height up and down
- Horizontal forward and backward
- Recline forward and backward

Does the driver seat operate correctly?

Yes

No	If no seat movement occurs, GO to I30 If no front vertical seat movement occurs, GO to I4 If no rear vertical seat movement occurs, GO to I10 If no horizontal seat movement occurs, GO to I16 If no recline seat movement occurs, GO to I22

I4 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-8 Ground

C341B-16 Ground

Is any voltage present?

Yes

GO to I5

GO to I6

I5 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Seat Front Height Motor C382.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-8 Ground

C341B-16 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to I29

No	INSTALL a new driver seat track. REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation). GO to I29

I6 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-8 Ground

C341B-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to I8

GO to I7

I7 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Seat Front Height Motor C382.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-8 Ground

C341B-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to I29

No	REPAIR the affected circuit. GO to I29

I8 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Seat Front Height Motor C382.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-8 C382-1

C341B-16 C382-3

Are the resistances less than 3 ohms?

Yes

GO to I9

No	REPAIR the affected circuit. GO to I29

I9 CHECK FOR VOLTAGE TO THE FRONT HEIGHT MOTOR

Connect: DSM C341B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C382-1 C382-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (front height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to I29

GO to I28

I10 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-2 Ground

C341B-5 Ground

Is any voltage present?

Yes

GO to I11

GO to I12

I11 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Seat Rear Height Motor C363.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-2 Ground

C341B-5 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to I29

No	INSTALL a new driver seat track. REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation). GO to I29

I12 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-2 Ground

C341B-5 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to I14

GO to I13

I13 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Seat Rear Height Motor C363.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-2 Ground

C341B-5 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to I29

No	REPAIR the affected circuit. GO to I29

I14 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Seat Rear Height Motor C363.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-2 C363-1

C341B-5 C363-3

Are the resistances less than 3 ohms?

Yes

GO to I15

No	REPAIR the affected circuit. GO to I29

I15 CHECK FOR VOLTAGE TO THE REAR HEIGHT MOTOR

Connect: DSM C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C363-1 C363-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (rear height up and down) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to I29

GO to I28

I16 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-14 Ground

C341B-15 Ground

Is any voltage present?

Yes

GO to I17

GO to I18

I17 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Seat Horizontal Motor C362.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-14 Ground

C341B-15 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to I29

No	INSTALL a new driver seat track motor. REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation). GO to I29

I18 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-14 Ground

C341B-15 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to I20

GO to I19

I19 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Seat Horizontal Motor C362.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-14 Ground

C341B-15 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to I29

No	REPAIR the affected circuit. GO to I29

I20 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Seat Horizontal Motor C362.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-14 C362-1

C341B-15 C362-3

Are the resistances less than 3 ohms?

Yes

GO to I21

No	REPAIR the affected circuit. GO to I29

I21 CHECK FOR VOLTAGE TO THE HORIZONTAL MOTOR

Connect: DSM C341B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C362-1 C362-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat track motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to I29

GO to I28

I22 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C342B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-7 Ground

C341B-4 Ground

Is any voltage present?

Yes

GO to I23

GO to I24

I23 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Seat Front Recliner Motor C3187.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-7 Ground

C341B-4 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to I29

No	INSTALL a new driver seat backrest frame. GO to I29

I24 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-7 Ground

C341B-4 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to I26

GO to I25

I25 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Seat Recliner Motor C3187.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-7 Ground

C341B-4 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat backrest frame. GO to I29

No	REPAIR the affected circuit. GO to I29

I26 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Seat Recliner Motor C3187.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-7 C3187-1

C341B-4 C3187-3

Are the resistances less than 3 ohms?

Yes

GO to I27

No	REPAIR the affected circuit. GO to I29

I27 CHECK FOR VOLTAGE TO THE RECLINER MOTOR

Connect: DSM C342B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3187-1 C3187-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (recline forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat backrest frame. GO to I29

GO to I28

I28 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to I29

I29 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

I30 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST J: THE POWER LUMBAR IS INOPERATIVE — DRIVER, WITHOUT MULTI-CONTOUR SEATS

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B1522:11	Lumbar Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1522:12	Lumbar Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1522:13	Lumbar Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Front seat power lumbar assembly
DSM

J1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1067:24 or B1068:24, GO to Pinpoint Test AC
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AA
For DTC B1522:11, B1522:12 or B1522:13, GO to J3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.

GO to J2

J2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DSM and monitor the LUMB_IN_SW PID
- Access the DSM and monitor the LUMB_OUT_SW PID

Do the PID states agree with the switch positions?

Yes

GO to J3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

J3 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-9 Ground

C341B-10 Ground

Is any voltage present?

Yes

GO to J4

GO to J5

J4 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Seat Lumbar Motor C3215.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-9 Ground

C341B-10 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to J10

No	INSTALL a new driver seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles Without: Multi-Contour Seats (501-10A Front Seats, Removal and Installation). GO to J10

J5 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-9 Ground

C341B-10 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to J7

GO to J6

J6 CHECK THE LUMBAR MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Seat Lumbar Motor C3215.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-9 Ground

C341B-10 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles Without: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to J10

No	REPAIR the affected circuit. GO to J10

J7 CHECK THE LUMBAR MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Seat Lumbar Motor C3215.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-9 C3215-B

C341B-10 C3215-A

Are the resistances less than 3 ohms?

Yes

GO to J8

No	REPAIR the affected circuit. GO to J10

J8 CHECK FOR VOLTAGE TO THE LUMBAR MOTOR

Connect: DSM C341B.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3215-A C3215-B

NOTE: Because the lumbar motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles Without: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to J10

GO to J9

J9 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to J10

J10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST K: THE DRIVER MEMORY SEAT DOES NOT OPERATE USING THE MEMORY SET SWITCH

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DDM B1C03:23	Memory #1 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
DDM B1C04:23	Memory #2 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
DDM B1C05:23	Memory #3 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

Possible Sources

Memory seat hard/soft stops not set correctly
Wiring, terminals or connectors
Memory SET control switch
Missing ignition status information
DDM

K1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform self-test on the DSM and DDM . If the diagnostic scan tool does not communicate to the DSM and/or DDM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any Diagnostic Trouble Codes (DTCs) present?

Yes

For DDM DTC B1C03:23, B1C04:23 or B1C05:23, GO to K2
For all other DDM Diagnostic Trouble Codes (DTCs),
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing). For DSM Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart.

GO to K2

K2 MONITOR DDM (DRIVER DOOR MODULE) PARAMETER IDENTIFICATIONS (PIDS) AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS

While activating the memory recall 1, 2 and 3 buttons, monitor the following DDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DDM and monitor the MEMORY_SW_1 PID
- Access the DDM and monitor the MEMORY_SW_2 PID
- Access the DDM and monitor the MEMORY_SW_3 PID

Do the PID values agree with the switch button positions?

Yes

Using the seat control switch, OPERATE the driver memory seat to the full travel of each seat axis to reset the hard/soft stops. Operate the system and determine if the concern is still present. If the seat does not operate correctly in any direction, GO to Pinpoint Test I

GO to K3

K3 CHECK THE MEMORY SET SWITCH INPUTS

Ignition OFF.

Disconnect: Driver Seat Control Switch C545.

Ignition ON.

Monitor the following DDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DDM and monitor the MEMORY_SW_1 PID
- Access the DDM and monitor the MEMORY_SW_2 PID
- Access the DDM and monitor the MEMORY_SW_3 PID

NOTE: When performing these steps, it is possible that the memory seat may move to a previously stored memory seat position. Monitor the MEMORY_SW_1 switch status PID while momentarily connecting a fused jumper wire as shown:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-11 Ground

Monitor the MEMORY_SW_2 switch status PID while momentarily connecting a fused jumper wire as shown:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-12 Ground

Monitor the MEMORY_SW_3 switch status PID while momentarily connecting a fused jumper wire as shown:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-13 Ground

Do the PID values change when the jumper wire is connected?

Yes

INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

GO to K4

K4 CHECK THE MEMORY SET CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: DDM C501A and C501B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C545-11		Ground
C545-12		Ground
C545-13		Ground

Is any voltage present?

Yes

REPAIR the affected circuit.

GO to K5

K5 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C545-11		Ground
C545-12		Ground
C545-13		Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to K6

No	REPAIR the affected circuit.

K6 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C545-11		C501B-3
C545-12		C501B-5
C545-13		C501B-4

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C545-1		C501A-17

Are the resistances less than 3 ohms?

Yes

GO to K7

No	REPAIR the affected circuit.

K7 CHECK THE DDM (DRIVER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DDM connectors. Make sure they seat and latch correctly.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: THE DRIVER MEMORY SEAT DOES NOT MOVE TO THE CORRECT MEMORY POSITION

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

Memory seat hard/soft stops not correctly set

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST M: THE UPPER BACKREST PIVOT IS INOPERATIVE - DRIVER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B1521:11	Upper Back Pivot Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1521:12	Upper Back Pivot Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1521:13	Upper Back Pivot Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Seat backrest
DSM

M1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B152B:24 or B152C:24, GO to Pinpoint Test AC
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AA
For DTC B1521:11, B1521:12 or B1521:13, GO to M3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart in this section.

GO to M2

M2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DSM and monitor the UPB_PIVOT_F_SW PID
- Access the DSM and monitor the UPB_PIVOT_A_SW PID

Do the PID states agree with the switch positions?

Yes

GO to M3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

M3 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-6 Ground

C341A-16 Ground

Is any voltage present?

Yes

GO to M4

GO to M5

M4 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Seat Upper Pivot Motor C3009.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-6 Ground

C341A-16 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to M10

No	INSTALL a new driver seat backrest. GO to M10

M5 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-6 Ground

C341A-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to M7

GO to M6

M6 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Seat Upper Pivot Motor C3009.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-6 Ground

C341A-16 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat backrest. GO to M10

No	REPAIR the affected circuit. GO to M10

M7 CHECK THE UPPER PIVOT MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Seat Upper Pivot Motor C3009.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-6 C3009-1

C341A-16 C3009-3

Are the resistances less than 3 ohms?

Yes

GO to M8

No	REPAIR the affected circuit. GO to M10

M8 CHECK FOR VOLTAGE TO THE UPPER PIVOT MOTOR

Connect: DSM C341A.

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3009-1 C3009-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat backrest. GO to M10

GO to M9

M9 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to M10

M10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST N: THE CUSHION EXTENSION IS INOPERATIVE - DRIVER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B151F:11	Left Cushion Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B151F:12	Left Cushion Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B151F:13	Left Cushion Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1520:11	Right Cushion Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1520:12	Right Cushion Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1520:13	Right Cushion Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Front seat cushion extension adjuster
DSM

N1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1527:24, B1528:24, B1529:24 or B152A:24, GO to Pinpoint Test AC
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AA
For DTC B151F:11, B151F:12, B151F:13, B1520:11, B1520:12 or B1520:13, GO to N3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart in this section.

GO to N2

N2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DSM and monitor the L_CUSH_AFT_SW PID
- Access the DSM and monitor the L_CUSH_FOR_SW PID
- Access the DSM and monitor the R_CUSH_AFT_SW PID
- Access the DSM and monitor the R_CUSH_FOR_SW PID

Do the PID states agree with the switch positions?

Yes

GO to N3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

N3 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341B (left cushion extension) or C341A (right cushion extension).

Ignition ON.

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-1 Ground

C341B-11 Ground

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-7 Ground

C341A-17 Ground

Is any voltage present?

Yes

GO to N4

GO to N5

N4 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED

Ignition OFF.

Disconnect: Driver Cushion Extension Motor C3001 (LH ) or C3226 (RH ).

Ignition ON.

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-1 Ground

C341B-11 Ground

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-7 Ground

C341A-17 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to N10

No	INSTALL a new driver seat cushion extension adjuster. REFER to: Front Seat Cushion Extension Adjuster (501-10A Front Seats, Removal and Installation). GO to N10

N5 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-1 Ground

C341B-11 Ground

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-7 Ground

C341A-17 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to N7

GO to N6

N6 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED

Disconnect: Driver Cushion Extension Motor C3001 (LH ) or C3226 (RH ).

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-1 Ground

C341B-11 Ground

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-7 Ground

C341A-17 Ground

Are the resistances greater than 10,000 ohms?

Yes

INSTALL a new driver seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster (501-10A Front Seats, Removal and Installation).
GO to N10

No	REPAIR the affected circuit. GO to N10

N7 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR AN OPEN

Disconnect: Driver Cushion Extension Motor C3001 (LH ) or C3226 (RH ).

For left cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341B-1 C3001-1

C341B-11 C3001-3

For right cushion extension, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-7 C3226-3

C341A-17 C3226-1

Are the resistances less than 3 ohms?

Yes

GO to N8

No	REPAIR the affected circuit. GO to N10

N8 CHECK FOR VOLTAGE TO THE THE CUSHION EXTENSION MOTOR

Connect: DSM C341B (left cushion extension) or C341A (right cushion extension).

Ignition ON.

Connect a 12-volt incandescent test light between:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

(Left) C3001-1 C3001-3

Click to display connectors

Positive Lead Measurement / Action Negative Lead

(Right) C3226-1 C3226-3

NOTE: Because the seat motor electrical connector is disconnected, the DSM may only activate the seat motor output for approximately 500 ms then turn off. Activate the seat control switch (horizontal forward and backward) positions while observing the test light.

Does the test light momentarily illuminate when the seat control switch is activated in both positions?

Yes

INSTALL a new driver seat cushion extension adjuster.
REFER to: Front Seat Cushion Extension Adjuster (501-10A Front Seats, Removal and Installation).
GO to N10

GO to N9

N9 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to N10

N10 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST O: THE POWER HEAD RESTRAINT IS INOPERATIVE - DRIVER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B1060:11	Seat Headrest Motor Output: Circuit Short To Ground	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1060:12	Seat Headrest Motor Output: Circuit Short To Battery	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B1060:13	Seat Headrest Motor Output: Circuit Open	If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
DSM B11D1:83	LIN Bus 'C': Value Of Signal Protection Calculation Incorrect	Sets by the DSM when a loss of communication has been detected from the driver front head restraint.
DSM B11D1:87	LIN Bus 'C': Missing Message	Sets by the DSM when a loss of communication has been detected from the driver front head restraint.
DSM B1679:96	Headrest: Component Internal Failure	This DTC indicates there is an internal failure in the driver front head restraint.

Possible Sources

Wiring, terminals or connectors
Seat control switch
Front head restraint
DSM

O1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Attempt to activate the seat control switch in all directions.

Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1679:96, INSTALL a new front head restraint.
REFER to: Front Head Restraint (501-10A Front Seats, Removal and Installation). For DTC B106D:24, B106E:24, B14C5:24 or B14C6:24, GO to Pinpoint Test AC
For DTC B1087:83 or B1087:87, GO to Pinpoint Test AA
For DTC B11D1:83, B11D1:87, B1060:11, B1060:12 or B1060:13, GO to O3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart in this section.

GO to O2

O2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

While operating the seat control switch , monitor the DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DSM and monitor the HDRST_SW_DWN PID
- Access the DSM and monitor the HDRST_SW_UP PID
- Access the DSM and monitor the HDRST_SW_BK PID
- Access the DSM and monitor the HDRST_SW_FW PID

Do the PID states agree with the switch positions?

Yes

GO to O3

No	INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

O3 CHECK FOR POWER AND GROUND TO THE FRONT HEAD RESTRAINT

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: Driver Front Head Restraint C3055.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3055-1 C3055-9

Is the voltage greater than 11 volts?

Yes

For DTC B11D1:83 or B11D1:87, GO to O4
Otherwise, GO to O5

GO to O5

O4 CHECK THE FRONT HEAD RESTRAINT LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Disconnect: Driver Front Seat Control Switch C545.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3055-5 C545-2

Is the resistances less than 3 ohms?

Yes

INSTALL a new driver front head restraint.
REFER to: Front Head Restraint (501-10A Front Seats, Removal and Installation).
GO to O9

No	REPAIR the circuit. GO to O9

O5 CHECK THE FRONT HEAD RESTRAINT CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: DSM C341A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3055-1 Ground

C3055-9 Ground

Is any voltage present?

Yes

REPAIR the circuit in question. GO to O9

GO to O6

O6 CHECK THE FRONT HEAD RESTRAINT CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3055-1 Ground

C3055-9 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to O7

No	REPAIR the circuit in question. GO to O9

O7 CHECK THE FRONT HEAD RESTRAINT CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3055-1 C341A-8

C3055-9 C341A-18

Are the resistances less than 3 ohms?

Yes

GO to O8

No	REPAIR the circuit in question. GO to O9

O8 CHECK THE DSM (DRIVER FRONT SEAT MODULE) AND FRONT HEAD RESTRAINT OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors and front head restraint connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors and front head restraint connector. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new front head restraint.
REFER to: Front Head Restraint (501-10A Front Seats, Removal and Installation).
OPERATE the system and determine if the concern is still present. If concern is still present, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to O9

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to O9

O9 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST P: THE MEMORY SEAT DOES NOT OPERATE WHEN USING THE RKE (REMOTE KEYLESS ENTRY) TRANSMITTER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to the Owner's Literature for information on associating a RKE transmitter. CARRY OUT the DSM self-test and REFER to the DSM DTC Chart in this section to diagnose any Diagnostic Trouble Codes (DTCs) retrieved.

Possible Sources

RKE transmitter concern

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST Q: EASY ENTRY/EASY EXIT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Sources

Easy entry/exit feature is not enabled
Missing ignition status information
DSM

Visual Inspection and Pre-checks

Verify the easy entry/exit feature is enabled in the message center and/or touchsreen. REFER to the Owner's Literature for information on programming vehicle settings in the message center and/or touchscreen.

Q1 CHECK THE DRIVER POWER SEAT OPERATION

Ignition ON.

Check the message center to verify the easy entry/exit feature is turned on.

Using the seat control switch, verify the driver power seat operates fully forward and backward.

Using a diagnostic scan tool, perform the DSM self-test.

Are any Diagnostic Trouble Codes (DTCs) received?

Yes

REFER to the DSM DTC Chart in this section.

No	If disabled, ENABLE the easy entry/exit feature through the message center and/or touchscreen. REFER to the Owner's Literature. TEST the system for normal operation. If OK, INSTRUCT the customer on correct system operation. If not disabled, GO to Q2

Q2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION STATUS PID (PARAMETER IDENTIFICATION) STATES

Ignition ON.

Access the DSM and monitor the IGN_SW_STATE PID

Monitor the PID while cycling the ignition from ON to OFF and back to ON.

Does the PID states match with ignition mode?

Yes

INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

No	DIAGNOSE the ignition status concern. REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

PINPOINT TEST R: DTC: U0100:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB and the PCM communicate using the HS-CAN1 and MS-CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U0100:00	Lost Communication With ECM/PCM 'A': No Sub Type Information	Set by the DSM whenever it has lost communication to the PCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.
SCMB U0100:00	Lost Communication With ECM/PCM 'A': No Sub Type Information	Set by the SCMB whenever it has lost communication to the PCM for 5 seconds or longer while SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
DSM or SCMB
PCM

R1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to R2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

R2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the PCM pass the network test?

Yes

GO to R3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

R3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) OR SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the DSM or SCMB self-test.

Is DTC U0100:00 still present?

Yes

GO to R4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

R4 CHECK FOR DTC U0100:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0100:00 set in other modules?

Yes

Click here to access Guided Routine (PCM).

No	If the DTC was set in the DSM , INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). If the DTC was set in the SCMB , INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST S: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB and the BCM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Set by the DSM whenever it has lost communication to the BCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.
SCMB U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Set by the SCMB whenever it has lost communication to the BCM for 5 seconds or longer while SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
DSM / SCMB
BCM

S1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to S2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

S2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to S3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

S3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) OR SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the DSM or SCMB self-test.

Is DTC U0140:00 still present?

Yes

GO to S4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

S4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?

Yes

INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

No	If the DTC was set in the DSM , INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). If the DTC was set in the SCMB , INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST T: DTC: U0199:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM communicates to the DDM using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U0199:00	Lost Communication With 'Door Control Module A': No Sub Type Information	Set by the DSM whenever it has lost communication to the DDM module for 5 seconds or longer while the DSM input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
DSM
DDM

T1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to T2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

T2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the DDM pass the network test?

Yes

GO to T3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

T3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0199:00 still present?

Yes

GO to T4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

T4 CHECK FOR DTC U0199:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0199:00 set in other modules?

Yes

INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST U: DTC: U0199:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMB communicates to the PDM using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB U0199:00	Lost Communication With 'Door Control Module A': No Sub Type Information	Set by the SCMB whenever it has lost communication to the PDM module for 5 seconds or longer while the SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
SCMB
PDM

U1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to U2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

U2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the PDM pass the network test?

Yes

GO to U3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

U3 RECHECK THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMB self-test.

Is DTC U0199:00 still present?

Yes

GO to U4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

U4 CHECK FOR DTC U0199:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0199:00 set in other modules?

Yes

INSTALL a new PDM .
REFER to: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST V: DTC: U0212:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM and the SCCM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U0212:00	Lost Communication With Steering Column Control Module: No Sub Type Information	Set by the DSM whenever it has lost communication to the SCCM module for 5 seconds or longer while the DSM input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
DSM
SCCM

V1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to V2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the SCCM pass the network test?

Yes

GO to V3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

V3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0212:00 still present?

Yes

GO to V4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V4 CHECK FOR DTC U0212:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0212:00 set in other modules?

Yes

INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST W: DTC: U0253:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB communicates to the APIM using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	Set by the DSM whenever it has lost communication to the APIM for 5 seconds or longer while the DSM input voltage is between 10 and 15.5 volts.
SCMB U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	Set by the SCMB whenever it has lost communication to the APIM for 5 seconds or longer while the SCMB input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
DSM / SCMB
APIM

W1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to W2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?

Yes

GO to W3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

W3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) / SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the DSM / SCMB self-test.

Is DTC U0253:00 still present?

Yes

GO to W4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W4 CHECK FOR DTC U0253:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0253:00 set in other modules?

Yes

INSTALL a new APIM . Refer to the appropriate section in Group 415 for the procedure.

No	INSTALL a new DSM DSM or SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST X: DTC: U2100:00

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CARRY OUT PMI on the DSM / SCMB . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U2100:00	Initial Configuration Not Complete: No Sub Type Information	This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.
SCMB U2100:00	Initial Configuration Not Complete: No Sub Type Information	This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

PMI has not been done to a newly installed module or configuration data has been lost.

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST Y: DTC: U3000:49

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

INSTALL a new DSM / SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U3000:49	Control Module: Internal Electronic Failure	This DTC indicates there is an internal failure in the module. The module must be replaced.
SCMB U3000:49	Control Module: Internal Electronic Failure	This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

DSM / SCMB

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST Z: DTC: U3500:17

Refer to Wiring Diagrams Cell 123 for schematic and connector information. Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The DSM / SCMB continuously monitors the input voltage for correct operation. If the DSM / SCMB detects input voltage greater than 17 volts, it stores DTC U3500:17 in memory.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM U3500:17	Control Module Input Power 'A' Circuit Range/Performance: Circuit Voltage Above Threshold	Set by the DSM whenever the DSM input voltage is greater than 17 volts. If DTC U3500:17 is set, the DSM disables the motor outputs for the driver seat.
SCMB U3500:17	Control Module Input Power 'A' Circuit Range/Performance: Circuit Voltage Above Threshold	Set by the SCMB whenever the SCMB input voltage is greater than 17 volts. If DTC U3500:17 is set, the SCMB disables the motor outputs for the passenger seat.

Possible Sources

Battery charging system

Z1 CHECK THE CHARGING SYSTEM VOLTAGE

NOTE: DTC U3500:17, B1317, B1318, B2486, B1676, U3003:16 or U3003:17 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.

NOTE: Do not allow the engine speed to increase above 2,000 rpm while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2,000 rpm, shut the vehicle OFF and restart the engine before performing this step.

Start the engine.

Measure the voltage of the battery with and without a load on the charging system as follows:
- Turn off all accessories and run the engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage.
- Turn on headlights and HVAC fan on high and run engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage.

Are the voltages between 13 and 15.2 volts?

Yes

CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation.

No	DIAGNOSE the vehicle charging system. REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

PINPOINT TEST AA: DTC: B1087:83 OR B1087:87

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B1087:83	LIN Bus 'A': Value Of Signal Protection Calculation Incorrect	Sets by the DSM when a loss of communication has been detected from the seat control switch.
DSM B1087:87	LIN Bus 'A': Missing Message	Sets by the DSM when a loss of communication has been detected from the seat control switch.

Possible Sources

Fuse
Wiring, terminals or connectors
Seat control switch
DSM

Visual Inspection and Pre-checks

Verify BCM fuse 9 (5A) is OK.

AA1 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

Ignition OFF.

Disconnect: Driver Seat Control Switch C545.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-16 Ground

Is the voltage greater than 11 volts?

Yes

GO to AA2

No	VERIFY BCM fuse 9 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AA2 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to AA3

No	REPAIR the circuit.

AA3 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO VOLTAGE BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE)

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341E.

Disconnect: Driver Front Head Restraint C3055 (if equipped with 4-way power head restraint).

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-2 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AA7

GO to AA4

AA4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO GROUND BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE)

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to AA5

No	REPAIR the circuit. GO to AA7

AA5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR AN OPEN BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C545-2 C341E-4

Is the resistance less than 3 ohms?

Yes

GO to AA6

No	REPAIR the affected circuit. GO to AA7

AA6 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
OPERATE the system and determine if the concern is still present. If the concern is still present, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to AA7

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AA7

AA7 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AB: DTC: B1087:83 OR B1087:87

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B1087:83	LIN Bus 'A': Value Of Signal Protection Calculation Incorrect	Sets by the SCMB when a loss of communication has been detected from the seat control switch.
SCMB B1087:87	LIN Bus 'A': Missing Message	Sets by the SCMB when a loss of communication has been detected from the seat control switch.

Possible Sources

Fuse
Wiring, terminals or connectors
Seat control switch
SCMB

Visual Inspection and Pre-checks

Verify BCM fuse 9 (5A) is OK.

AB1 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

Ignition OFF.

Disconnect: Passenger Seat Control Switch C680.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-16 Ground

Is the voltage greater than 11 volts?

Yes

GO to AB2

No	VERIFY BCM fuse 9 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AB2 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to AB3

No	REPAIR the circuit.

AB3 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO VOLTAGE BETWEEN THE SEAT CONTROL SWITCH AND SCMB (PASSENGER FRONT SEAT MODULE)

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342E.

Disconnect: Passenger Front Head Restraint C3058 (if equipped with 4-way power head restraint).

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-2 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AB7

GO to AB4

AB4 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR A SHORT TO GROUND BETWEEN THE SEAT CONTROL SWITCH AND SCMB (PASSENGER FRONT SEAT MODULE)

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to AB5

No	REPAIR the circuit. GO to AB7

AB5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) FOR AN OPEN BETWEEN THE SEAT CONTROL SWITCH AND SCMB (PASSENGER FRONT SEAT MODULE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C680-2 C342E-4

Is the resistance less than 3 ohms?

Yes

GO to AB6

No	REPAIR the affected circuit. GO to AB7

AB6 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
OPERATE the system and determine if the concern is still present. If the concern is still present, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to AB7

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AB7

AB7 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AC: DTC: U2013:24

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation from the driver seat control switch. If any individual switches within the driver seat control switch are inoperative or the DTC returns, INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DSM B1067:24	Lumbar In Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1068:24	Lumbar Out Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B106D:24	Headrest Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B106E:24	Headrest Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B14C3:24	Seat Height Rear Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B14C4:24	Seat Height Rear Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B14C5:24	Seat Headrest Forward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B14C6:24	Seat Headrest Rearward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1527:24	Left Cushion Fore Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1528:24	Left Cushion Aft Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1529:24	Right Cushion Fore Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B152A:24	Right Cushion Aft Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B152B:24	Upper Back Pivot Fore Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B152C:24	Upper Back Pivot Aft Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B96:24	Seat Slide Forward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B97:24	Seat Slide Backward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B98:24	Seat Tilt Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1B99:24	Seat Tilt Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1C00:24	Seat Recline Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM B1C01:24	Seat Recline Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
DSM U2013:24	Switch Pack: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.

Possible Sources

Seat control switch active during self-test
Seat control switch

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AD: DTC: U2013:24

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation from the passenger seat control switch. If any individual switches within the passenger seat control switch are inoperative or the DTC returns, INSTALL a new seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMB B1067:24	Lumbar In Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1068:24	Lumbar Out Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B106D:24	Headrest Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B106E:24	Headrest Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B14C3:24	Seat Height Rear Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B14C4:24	Seat Height Rear Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B14C5:24	Seat Headrest Forward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B14C6:24	Seat Headrest Rearward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1527:24	Left Cushion Fore Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1528:24	Left Cushion Aft Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1529:24	Right Cushion Fore Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B152A:24	Right Cushion Aft Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B152B:24	Upper Back Pivot Fore Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B152C:24	Upper Back Pivot Aft Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B96:24	Seat Slide Forward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B97:24	Seat Slide Backward Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B98:24	Seat Tilt Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1B99:24	Seat Tilt Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1C00:24	Seat Recline Up Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB B1C01:24	Seat Recline Down Switch: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.
SCMB U2013:24	Switch Pack: Signal Stuck High	This DTC indicates the seat control switch is active for greater than 2 minutes or was active during the self-test.

Possible Sources

Seat control switch active during self-test
Seat control switch

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AE: THE DRIVER HEATED SEAT IS INOPERATIVE

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME B1153:4B	Driver Seat Cushion: Over Temperature	Sets when the SCME senses the driver seat cushion temperature has exceeded 105°C (221°F). When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:01	Driver Seat Cushion Temperature Sensor: General Electrical Failure	Sets when the SCME senses the driver seat heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:11	Driver Seat Cushion Temperature Sensor: Circuit Short To Ground	Sets when the SCME senses the driver seat heater sensor voltage is out-of-range low. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:15	Driver Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open	Sets when the SCME senses the driver seat heater sensor voltage is out-of-range high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B1208:2A	Driver Seat Cushion Temperature Sensor: Stuck in Range	Sets when the SCME senses the driver seat heater sensor voltage is stuck in range. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14B9:11	Driver Seat Cushion Thermal Electric Device: Circuit Short To Ground	Sets when the SCME senses the driver seat heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14B9:12	Driver Seat Cushion Thermal Electric Device: Circuit Short To Battery	Sets when the SCME senses the driver seat heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
SCME B14B9:13	Driver Seat Cushion Thermal Electric Device: Circuit Open	Sets when the SCME senses the driver seat heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.

Possible Sources

Wiring, terminals or connectors
Heater mat
FCIM
SCME (integral to the DSM )

Visual Inspection and Pre-checks

Verify BCMC fuse 30 (30A) and 38 (30A) are OK.

AE1 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

Ignition ON.

Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B14B9:11, B14B9:12 or B14B9:13, GO to AE5
For DTC B1153:4B, B1208:01, B1208:11, B1208:15 or B1208:2A, GO to AE7
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCME DTC Chart.

GO to AE2

AE2 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)

Start the engine.

Using a diagnostic scan tool,
Access the FCIM and monitor the CC_SW_D_HSEATS PID

Monitor the PID while pressing and releasing the driver heated seat control switch.

Does the PID agree with the seat control switch when it is pressed and released?

Yes

GO to AE3

If any other climate control system features are also inoperative, DIAGNOSE the inoperative climate control system.
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
Otherwise, INSTALL a new FCIM .
REFER to: Front Controls Interface Module (FCIM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

AE3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM Module C341C.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341C-2 Ground

C341C-3 Ground

Are the voltages greater than 11 volts?

Yes

GO to AE4

No	VERIFY BCMC fuse 30 (30A) and 38 (30A) are OK. If OK, REPAIR the affected circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to AE16

AE4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C341C-4		Ground
C341C-5		Ground
C341C-6		Ground

Are the resistances less than 3 ohms?

Yes

GO to AE5

No	REPAIR the circuit in question. GO to AE16

AE5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518 (if not previously disconnected).

Disconnect: DSM C341D and C341E.

Disconnect: Left Seat Cushion Heater C3005.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-1 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AE16

GO to AE6

AE6 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-1 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-1 C341D-3

Are the resistances greater than 10,000 ohms between the left seat cushion heater mat and ground; and less than 3 ohms between the left seat cushion heater mat and the DSM ?

Yes

GO to AE10

No	REPAIR the affected circuit. GO to AE16

AE7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341D and C341E.

Disconnect: Left Seat Cushion Heater C3005.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-2 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AE16

GO to AE8

AE8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-2 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-2 C341E-9

Is the resistance greater than 10,000 ohms between the left seat cushion heater mat and ground; and less than 3 ohms between the left seat cushion heater mat and the DSM ?

Yes

GO to AE9

No	REPAIR the circuit. GO to AE16

AE9 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-3 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-3 C341E-10

Is the resistance greater than 10,000 ohms between the left seat cushion heater mat and ground; and less than 3 ohms between the left seat cushion heater mat and the DSM ?

Yes

GO to AE14

No	REPAIR the circuit. GO to AE16

AE10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN

Disconnect: Left Seat Backrest Heater C3850.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3850-2 C341D-2

Are the resistances less than 3 ohms?

Yes

GO to AE11

No	REPAIR the circuit. GO to AE16

AE11 CHECK THE CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
C3005-1, Component Side		C3005-4, Component Side
C3005-1, Component Side		Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?

Yes

GO to AE12

No	INSTALL a new left seat cushion heater mat. REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures). GO to AE16

AE12 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
C3850-1, Component Side		C3850-2, Component Side
C3850-2, Component Side		Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?

Yes

GO to AE13

No	INSTALL a new left seat backrest heater mat. REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures). GO to AE16

AE13 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-4 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3005-4 C3850-1

Is the resistance greater than 10,000 ohms between the left seat cushion heater mat and ground; and less than 3 ohms between the left seat cushion heater mat and the backrest heater mat?

Yes

GO to AE15

No	REPAIR the circuit. GO to AE16

AE14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
C3005-2, Component Side		C3005-3, Component Side
C3005-2, Component Side		Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?

Yes

GO to AE15

No	INSTALL a new left seat cushion heater mat. REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures). GO to AE16

AE15 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AE16

AE16 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AF: THE PASSENGER HEATED SEAT IS INOPERATIVE

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF B1151:4B	Passenger Seat Cushion: Over Temperature	Sets when the SCMF senses the passenger seat cushion temperature has exceeded 105°C (221°F). When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B120A:11	Passenger Seat Cushion Temperature Sensor: Circuit Short To Ground	Sets when the SCMF senses the passenger seat heater sensor voltage is out-of-range low. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B120A:15	Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open	Sets when the SCMF senses the passenger seat heater sensor voltage is out-of-range high. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B120A:2A	Passenger Seat Cushion Temperature Sensor: Stuck in Range	Sets when the SCMF senses the passenger seat heater sensor voltage is stuck in range. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B14BB:11	Passenger Seat Cushion Thermal Electric Device: Circuit Short To Ground	Sets when the SCMF senses the passenger seat heater element current draw has exceeded a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B14BB:12	Passenger Seat Cushion Thermal Electric Device: Circuit Short To Battery	Sets when the SCMF senses the passenger seat heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B14BB:13	Passenger Seat Cushion Thermal Electric Device: Circuit Open	Sets when the SCMF senses the passenger seat heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.

Possible Sources

Wiring, terminals or connectors
Heater mat
FCIM
SCMF (integral to the SCMB )

Visual Inspection and Pre-checks

Verify BCMC fuse 31 (30A) and 37 (30A) are OK.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

AF1 CHECK FOR SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

Ignition ON.

Using a diagnostic scan tool, perform SCMF self-test.

Are any SCMF Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B14BB:11, B14BB:12 or B14BB:13, GO to AF5
For DTC B1151:4B, B120A:11, B120A:15 or B120A:2A, GO to AF7
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMF DTC Chart.

GO to AF2

AF2 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)

Start the engine.

Using a diagnostic scan tool,
Access the FCIM and monitor the CC_SW_P_HSEATS PID

Monitor the PID while pressing and releasing the passenger heated seat control switch.

Does the PID agree with the seat control switch when it is pressed and released?

Yes

GO to AF3

AF3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB Module C342C.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342C-2 Ground

C342C-3 Ground

Are the voltages greater than 11 volts?

Yes

GO to AF4

No	VERIFY BCMC fuse 31 (30A) and 37 (30A) are OK. If OK, REPAIR the affected circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to AF16

AF4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342C-5 Ground

C342C-6 Ground

Are the resistances less than 3 ohms?

Yes

GO to AF5

No	REPAIR the circuit in question. GO to AF16

AF5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519 (if not previously disconnected).

Disconnect: SCMB C342D and C342E.

Disconnect: Right Seat Cushion Heater C3002.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-1 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AF16

GO to AF6

AF6 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-1 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-1 C342D-3

Are the resistances greater than 10,000 ohms between the seat cushion heater mat and ground; and less than 3 ohms between the seat cushion heater mat and the SCMB ?

Yes

GO to AF10

No	REPAIR the affected circuit. GO to AF16

AF7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342D and C342E.

Disconnect: Right Seat Cushion Heater C3002.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-2 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AF16

GO to AF8

AF8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-2 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-2 C342E-9

Is the resistance greater than 10,000 ohms between the seat cushion heater mat and ground; and less than 3 ohms between the seat cushion heater mat and the SCMB ?

Yes

GO to AF9

No	REPAIR the circuit. GO to AF16

AF9 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-3 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-3 C342E-10

Is the resistance greater than 10,000 ohms between the seat cushion heater mat and ground; and less than 3 ohms between the seat cushion heater mat and the SCMB ?

Yes

GO to AF14

No	REPAIR the circuit. GO to AF16

AF10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN

Disconnect: Right Seat Backrest Heater C3316.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3316-2 C342D-2

Are the resistances less than 3 ohms?

Yes

GO to AF11

No	REPAIR the circuit. GO to AF16

AF11 CHECK THE CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
C3002-1, Component Side		C3002-4, Component Side
C3002-1, Component Side		Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?

Yes

GO to AF12

No	INSTALL a new right seat cushion heater mat. REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures). GO to AF16

AF12 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
C3316-1, Component Side		C3316-2, Component Side
C3316-2, Component Side		Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?

Yes

GO to AF13

No	INSTALL a new right seat backrest heater mat. REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures). GO to AF16

AF13 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-4 Ground

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3002-4 C3316-1

Is the resistance greater than 10,000 ohms between the right seat cushion heater mat and ground; and less than 3 ohms between the right seat cushion heater mat and the backrest heater mat?

Yes

GO to AF15

No	REPAIR the circuit. GO to AF16

AF14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
C3002-2, Component Side		C3002-3, Component Side
C3002-2, Component Side		Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?

Yes

GO to AF15

No	INSTALL a new right seat cushion heater mat. REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures). GO to AF16

AF15 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AF16

AF16 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AG: THE DRIVER VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME B14BD:11	Driver Seat Cushion Blower: Circuit Short To Ground	If the current to the driver seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC .
SCME B14BD:13	Driver Seat Cushion Blower: Circuit Open	If the current to the driver seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC .
SCME B1562:11	Driver Seat Back Blower Speed: Circuit Short To Ground	If the driver seat backrest blower speed control circuit is shorted to ground, the SCME sets this DTC .
SCME B1562:12	Driver Seat Back Blower Speed: Circuit Short To Battery	If the driver seat backrest blower speed control circuit is shorted to voltage, the SCME sets this DTC .
SCME B1564:11	Driver Seat Cushion Blower Speed: Circuit Short To Ground	If the driver seat cushion blower speed control circuit is shorted to ground, the SCME sets this DTC .
SCME B1564:12	Driver Seat Cushion Blower Speed: Circuit Short To Battery	If the driver seat cushion blower speed control circuit is shorted to voltage, the SCME sets this DTC .

Possible Sources

Wiring, terminals or connectors
Cushion blower motor
Backrest blower motor
FCIM
SCME (integral to the DSM )

AG1 CHECK THE DRIVER HEATED SEAT OPERATION

Start the engine.

Attempt to operate the driver heated seat.

Does the driver heated seat operate correctly?

Yes

GO to AG2

No	DIAGNOSE the inoperative driver heated seat. GO to Pinpoint Test AE

AG2 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) VENTILATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)

Start the engine.

Using a diagnostic scan tool,
Access the FCIM and monitor the CC_SW_D_CL_S PID

Monitor the PID while pressing and releasing the driver ventilated seat control switch.

Does the PID agree with the seat control switch when it is pressed and released?

Yes

GO to AG3

AG3 CHECK THE BLOWER MOTOR AND DSM (DRIVER FRONT SEAT MODULE) CONNECTIONS

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Disconnect: Left Seat Cushion Blower Motor C3035.

Disconnect: Left Seat Backrest Blower Motor C3033.

Inspect the DSM , front seat cushion blower motor and front seat backrest blower motor connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AG4

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

AG4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: DSM C341D and C341E.

Disconnect: Left Seat Cushion Blower Motor C3035.

Disconnect: Left Seat Backrest Blower Motor C3033.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341D-14 Ground

C341D-16 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341E-18 Ground

C341E-19 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to AG9

GO to AG5

AG5 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341D-14 Ground

C341D-16 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341E-18 Ground

C341E-19 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to AG6

No	REPAIR the affected circuit. GO to AG9

AG6 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341D-14 C3035-3

C341D-16 C3035-1

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341E-19 C3035-2

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341D-14 C3033-3

C341D-16 C3033-1

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341E-18 C3033-2

Are the resistances less than 3 ohms?

Yes

If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to AG7
If only the cushion blower did not operate correctly, INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to AG7
If both the cushion and backrest blower motors did not operate correctly, GO to AG8

No	REPAIR the affected circuit. GO to AG9

AG7 CHECK THE BLOWER MOTOR OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AG9

AG8 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AG9

AG9 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AH: THE PASSENGER VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF B14C0:11	Passenger Seat Cushion Blower: Circuit Short To Ground	If the current to the passenger seat cushion blower exceeds a programmed threshold, the SCMF shuts down the passenger seat system and sets this DTC .
SCMF B14C0:13	Passenger Seat Cushion Blower: Circuit Open	If the current to the passenger seat cushion blower exceeds a programmed threshold, the SCMF shuts down the passenger seat system and sets this DTC .
SCMF B1563:11	Passenger Seat Back Blower Speed: Circuit Short To Ground	If the passenger seat backrest blower speed control circuit is shorted to ground, the SCMF sets this DTC .
SCMF B1563:12	Passenger Seat Back Blower Speed: Circuit Short To Battery	If the passenger seat backrest blower speed control circuit is shorted to voltage, the SCMF sets this DTC .
SCMF B1565:11	Passenger Seat Cushion Blower Speed: Circuit Short To Ground	If the passenger seat cushion blower speed control circuit is shorted to ground, the SCMF sets this DTC .
SCMF B1565:12	Passenger Seat Cushion Blower Speed: Circuit Short To Battery	If the passenger seat cushion blower speed control circuit is shorted to voltage, the SCMF sets this DTC .

Possible Sources

Wiring, terminals or connectors
Cushion blower motor
Backrest blower motor
FCIM
SCMF (integral to the SCMB )

AH1 CHECK THE PASSENGER HEATED SEAT OPERATION

Start the engine.

Attempt to operate the passenger heated seat.

Does the passenger heated seat operate correctly?

Yes

GO to AH2

No	DIAGNOSE the inoperative right rear heated seat. GO to Pinpoint Test AF

AH2 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) VENTILATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)

Start the engine.

Using a diagnostic scan tool,
Access the FCIM and monitor the CC_SW_P_CL_S PID

Monitor the PID while pressing and releasing the passenger ventilated seat control switch.

Does the PID agree with the seat control switch when it is pressed and released?

Yes

GO to AH3

AH3 CHECK THE BLOWER MOTOR AND SCMB (PASSENGER FRONT SEAT MODULE) CONNECTIONS

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Disconnect: Right Seat Cushion Blower Motor C3328.

Disconnect: Right Seat Backrest Blower Motor C3791.

Inspect the SCMB , front seat cushion blower motor and front seat backrest blower motor connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AH4

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

AH4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMB C342D and C342E.

Disconnect: Right Seat Cushion Blower Motor C3328.

Disconnect: Right Seat Backrest Blower Motor C3791.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342D-14 Ground

C342D-16 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342E-18 Ground

C342E-19 Ground

Is any voltage present?

Yes

REPAIR the affected circuit. GO to AH9

GO to AH5

AH5 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342D-14 Ground

C342D-16 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342E-18 Ground

C342E-19 Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to AH6

No	REPAIR the affected circuit. GO to AH9

AH6 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342D-14 C3328-3

C342D-16 C3328-1

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342E-19 C3328-2

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342D-14 C3791-3

C342D-16 C3791-1

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342E-18 C3791-2

Are the resistances less than 3 ohms?

Yes

If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to AH7
If only the cushion blower did not operate correctly, INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to AH7
If both the cushion and backrest blower motors did not operate correctly, GO to AH8

No	REPAIR the affected circuit. GO to AH9

AH7 CHECK THE BLOWER MOTOR OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AH9

AH8 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AH9

AH9 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AI: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCME and the BCM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Set by the SCME whenever it has lost communication to the BCM for 5 seconds or longer while SCME input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
SCME (integral to the DSM )
BCM

AI1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AI2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AI2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to AI3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AI3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0140:00 still present?

Yes

GO to AI4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AI4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?

Yes

INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AJ: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCME and the BCM communicate using the MS-CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Set by the SCMF whenever it has lost communication to the BCM for 5 seconds or longer while SCMF input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
SCMF (integral to the SCMB )
BCM

AJ1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AJ2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AJ2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to AJ3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AJ3 RECHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMF self-test.

Is DTC U0140:00 still present?

Yes

GO to AJ4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AJ4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?

Yes

INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AK: DTC: U0257:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCME and the FCIM communicate using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME U0257:00	Lost Communication With Front Controls / Display Interface Module: No Sub Type Information	Set by the SCME whenever it has lost communication to the FCIM while SCME input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
FCIM
SCME (integral to the DSM )

AK1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AK2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AK2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the FCIM module pass the network test?

Yes

GO to AK3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AK3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0257:00 still present?

Yes

GO to AK4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AK4 CHECK FOR DTC U0257:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0257:00 set in other modules?

Yes

INSTALL a new FCIM module.
REFER to: Front Controls Interface Module (FCIM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AL: DTC: U0257:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMF and the FCIM communicate using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF U0257:00	Lost Communication With Front Controls / Display Interface Module: No Sub Type Information	Set by the SCMF whenever it has lost communication to the FCIM while SCMF input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
FCIM
SCMF (integral to the SCMB )

AL1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AL2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AL2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the FCIM module pass the network test?

Yes

GO to AL3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AL3 RECHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMF self-test.

Is DTC U0257:00 still present?

Yes

GO to AL4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AL4 CHECK FOR DTC U0257:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0257:00 set in other modules?

Yes

INSTALL a new FCIM module.
REFER to: Front Controls Interface Module (FCIM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AM: DTC: U1000:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DIAGNOSE any other DSM and SCME Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME U1000:00	Solid State Driver Protection Active -Driver Disabled: No Sub Type Information	This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AN: DTC: U1000:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DIAGNOSE any other SCMB and SCMF Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF U1000:00	Solid State Driver Protection Active -Driver Disabled: No Sub Type Information	This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

SCMB

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AO: DTC: U2100:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CARRY OUT PMI on the SCME . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME U2100:00	Initial Configuration Not Complete: No Sub Type Information	This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

PMI has not been done to a newly installed module or configuration data has been lost.

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AP: DTC: U2100:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Using a diagnostic scan tool, CARRY OUT PMI on the SCMF . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF U2100:00	Initial Configuration Not Complete: No Sub Type Information	This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

PMI has not been done to a newly installed module or configuration data has been lost.

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AQ: DTC: U3000:49

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

INSTALL a new DSM . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCME U3000:49	Control Module: Internal Electronic Failure	This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AR: DTC: U3000:49

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

INSTALL a new SCMB . REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMF U3000:49	Control Module: Internal Electronic Failure	This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

SCMB

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST AS: THE MULTI-CONTOUR SEAT FEATURE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — DRIVER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG B146F:00	Back Bladder System Electropneumatic Failure: No Sub Type Information	During self-test, the system inflates each of the bladders in the front seat power lumbar assembly and front seat backrest bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B146F:04	Back Bladder System Electropneumatic Failure: System Internal Failures	During self-test, the system inflates each of the bladders in the front seat power lumbar assembly and front seat backrest bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B146F:87	Back Bladder System Electropneumatic Failure: Missing Message	The SCMG sets this DTC when it has lost communication to the front seat backrest adjuster.
SCMG B1470:00	Cushion Bladder System Electropneumatic Failure: No Sub Type Information	During self-test, the system inflates each of the bladders in the front seat cushion adjuster and front seat cushion bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B1470:04	Cushion Bladder System Electropneumatic Failure: System Internal Failures	During self-test, the system inflates each of the bladders in the front seat cushion adjuster and front seat cushion bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMG B1470:87	Cushion Bladder System Electropneumatic Failure: Missing Message	The SCMG sets this DTC when it has lost communication to the front seat cushion adjuster.
SCMG B1473:11	Pump Driver: Circuit Short To Ground	This DTC sets when the current draw for the air pump driver is too high for a predetermined time period. This DTC may be set on-demand or in continuous memory.

Possible Sources

Wiring, terminals or connectors
Touchscreen
Front seat backrest adjuster
Front seat cushion adjuster
Front seat backrest bolster
Front seat cushion bolster
Multi-contour control pump
Front seat power lumbar assembly

Visual Inspection and Pre-checks

Verify all the hose connections to the multi-contour seat components are not leaking and/or check for any signs of restrictions (kinked or pinched hoses).

AS1 CHECK THE CLIMATE CONTROL OPERATION FROM THE TOUCHSCREEN

Start the engine.

Attempt to operate the climate control system from the touchscreen.

Did the climate control system features operate correctly from the touchscreen?

Yes

GO to AS2

No	DIAGNOSE the inoperative climate control system. REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).

AS2 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

Ignition ON.

NOTE: If the diagnostic scan tool does not communicate to the SCMG ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Using a diagnostic scan tool, perform the SCMG self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?

Yes

For B1473:11, GO to AS3
For B146F:87, GO to AS8
For B1470:87, GO to AS14
If B146F:00 (or B146F:04) and B1470:00 (or B1470:04) are both present, GO to AS4
For B146F:00 or B146F:04, GO to AS7
For B1470:00 or B1470:04, GO to AS13
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMG DTC Chart.

No	If the multi-contour seat is inoperative, GO to AS4 If only the seat backrest bladder(s) are not operating correctly, GO to AS7 If only the seat cushion bladder(s) are not operating correctly, GO to AS13

AS3 CHECK THE FRONT MULTI-CONTOUR CONTROL PUMP FEED FOR A SHORT TO GROUND

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: SCMG C3385.

Disconnect: Front Multi-Contour Control Pump C3849.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3849-1 Ground

Is the resistance greater than 10,000 ohms?

Yes

INSTALL a new front multi-contour control pump.
REFER to: Front Multi-Contour Control Pump - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to AS21

No	REPAIR the circuit. GO to AS21

AS4 VERIFY THE FRONT MULTI-CONTOUR CONTROL PUMP OPERATES

Ignition OFF.

Ignition ON.

NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the touchscreen, place the driver multi-contour seat into the MASSAGE mode.

Listen near the seat cushion to determine whether the front multi-contour control pump is on.

Is the front multi-contour control pump on?

Yes

GO to AS6

GO to AS5

AS5 CHECK THE FRONT MULTI-CONTOUR CONTROL PUMP CIRCUITS FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: SCMG C3385.

Disconnect: Driver Front Multi-Contour Control Pump C3849.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3849-1 C3385-10

C3849-2 C3385-3

Are the resistances less than 3 ohms?

Yes

INSTALL a new front multi-contour control pump.
REFER to: Front Multi-Contour Control Pump - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS20 Otherwise, GO to AS21

No	REPAIR the circuit in question. GO to AS21

AS6 CHECK THE FRONT MULTI-CONTOUR CONTROL PUMP HOSES FOR CORRECT INSTALLATION OR DAMAGE

Ignition OFF.

Visually inspect the front multi-contour control pump hoses for correct installation or damage and check the hose routing to make sure the entire length of the hoses are not restricted, bent, kinked or damaged.

Are the front multi-contour control pump hoses installed correctly with no damage?

Yes

No	REPAIR the hose(s) or INSTALL a new seat component as necessary.

AS7 CHECK THE BACKREST HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE

Ignition OFF.

Visually inspect the backrest hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

Are the backrest hoses installed correctly with no damage or restrictions?

Yes

For a concern with the front seat backrest bolsters, INSTALL a new front seat backrest bolster.
REFER to: Front Seat Backrest Bolster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS19
For a concern with the front seat backrest adjuster, INSTALL a new front seat backrest adjuster.
REFER to: Front Seat Backrest Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS19
For a concern with the front seat power lumbar assembly, GO to AS19

REPAIR the hose(s) or INSTALL a new seat component as necessary: REFER to: Front Seat Backrest Bolster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
REFER to: Front Seat Backrest Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

AS8 CHECK THE FRONT SEAT BACKREST ADJUSTER POWER CIRCUIT FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: Driver Front Seat Backrest Adjuster C3880.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3880-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AS9

No	REPAIR the circuit. GO to AS21

AS9 CHECK THE FRONT SEAT BACKREST ADJUSTER GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3880-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AS10

No	REPAIR the circuit. GO to AS21

AS10 CHECK THE FRONT SEAT BACKREST ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: SCMG C3385.

Disconnect: Driver Front Seat Cushion Adjuster C3386.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3880-2 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AS21

No	GO to AS11

AS11 CHECK THE FRONT SEAT BACKREST ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3880-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to AS12

No	REPAIR the circuit. GO to AS21

AS12 CHECK THE FRONT SEAT BACKREST ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3880-2 C3385-2

Is the resistance less than 3 ohms?

Yes

INSTALL a new front seat backrest adjuster.
REFER to: Front Seat Backrest Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS20 Otherwise, GO to AS21

No	REPAIR the circuit. GO to AS21

AS13 CHECK THE CUSHION HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE

Ignition OFF.

Visually inspect the cushion hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose are not restricted (bends, kinks, etc...).

Are the cushion hoses installed correctly with no damage or restrictions?

Yes

For a concern with the front seat cushion bolsters, INSTALL a new front seat cushion bolster.
REFER to: Front Seat Cushion Bolster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS19
For a concern with the front seat cushion adjuster, INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS19

REPAIR the hose(s) or INSTALL a new seat component as necessary: REFER to: Front Seat Cushion Bolster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

AS14 CHECK THE FRONT SEAT CUSHION ADJUSTER POWER CIRCUIT FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Side Airbag In-line C3518.

Disconnect: Driver Front Seat Cushion Adjuster C3886.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3886-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AS15

No	REPAIR the circuit. GO to AS21

AS15 CHECK THE FRONT SEAT CUSHION ADJUSTER GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3886-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AS16

No	REPAIR the circuit. GO to AS21

AS16 CHECK THE FRONT SEAT CUSHION ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: SCMG C3385.

Disconnect: Driver Front Seat Backrest Adjuster C3880.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3886-3 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AS21

No	GO to AS17

AS17 CHECK THE FRONT SEAT CUSHION ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3886-3 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to AS18

No	REPAIR the circuit. GO to AS21

AS18 CHECK THE FRONT SEAT CUSHION ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3886-3 C3385-2

Is the resistance less than 3 ohms?

Yes

INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AS20 Otherwise, GO to AS21

No	REPAIR the circuit. GO to AS21

AS19 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMG connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMG connector. Make sure it seats and latches correctly.

Reconnect all previously disconnected connectors and hoses.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

AS20 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMG connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMG connector. Make sure it seats and latches correctly.

NOTE: Do not reconnect Driver Side Airbag In-line C3518 at this time. Reconnect all previously disconnected connectors and hoses.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to AS21

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AS21

AS21 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Side Airbag In-line C3518.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AT: THE MULTI-CONTOUR SEAT FEATURE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — PASSENGER

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMH B146F:00	Back Bladder System Electropneumatic Failure: No Sub Type Information	During self-test, the system inflates each of the bladders in the front seat power lumbar assembly and front seat backrest bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B146F:04	Back Bladder System Electropneumatic Failure: System Internal Failures	During self-test, the system inflates each of the bladders in the front seat power lumbar assembly and front seat backrest bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B146F:87	Back Bladder System Electropneumatic Failure: Missing Message	The SCMH sets this DTC when it has lost communication to the front seat backrest adjuster.
SCMH B1470:00	Cushion Bladder System Electropneumatic Failure: No Sub Type Information	During self-test, the system inflates each of the bladders in the front seat cushion adjuster and front seat cushion bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B1470:04	Cushion Bladder System Electropneumatic Failure: System Internal Failures	During self-test, the system inflates each of the bladders in the front seat cushion adjuster and front seat cushion bolsters, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
SCMH B1470:87	Cushion Bladder System Electropneumatic Failure: Missing Message	The SCMH sets this DTC when it has lost communication to the front seat cushion adjuster.
SCMH B1473:11	Pump Driver: Circuit Short To Ground	This DTC sets when the current draw for the air pump driver is too high for a predetermined time period. This DTC may be set on-demand or in continuous memory.

Possible Sources

Wiring, terminals or connectors
Touchscreen
Front seat backrest adjuster
Front seat cushion adjuster
Front seat backrest bolster
Front seat cushion bolster
Multi-contour control pump
Front seat power lumbar assembly

Visual Inspection and Pre-checks

Verify all the hose connections to the multi-contour seat components are not leaking and/or check for any signs of restrictions (kinked or pinched hoses).

AT1 CHECK THE CLIMATE CONTROL OPERATION FROM THE TOUCHSCREEN

Start the engine.

Attempt to operate the climate control system from the touchscreen.

Did the climate control system features operate correctly from the touchscreen?

Yes

GO to AT2

No	DIAGNOSE the inoperative climate control system. REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).

AT2 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

Ignition ON.

NOTE: If the diagnostic scan tool does not communicate to the SCMH ,
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Using a diagnostic scan tool, perform the SCMH self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?

Yes

For B1473:11, GO to AT3
For B146F:87, GO to AT8
For B1470:87, GO to AT14
If B146F:00 (or B146F:04) and B1470:00 (or B1470:04) are both present, GO to AT4
For B146F:00 or B146F:04, GO to AT7
For B1470:00 or B1470:04, GO to AT13
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMH DTC Chart.

No	If the multi-contour seat is inoperative, GO to AT4 If only the seat backrest bladder(s) are not operating correctly, GO to AT7 If only the seat cushion bladder(s) are not operating correctly, GO to AT13

AT3 CHECK THE FRONT MULTI-CONTOUR CONTROL PUMP FEED FOR A SHORT TO GROUND

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMH C3386.

Disconnect: Front Multi-Contour Control Pump C3851.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3851-1 Ground

Is the resistance greater than 10,000 ohms?

Yes

INSTALL a new front multi-contour control pump.
REFER to: Front Multi-Contour Control Pump - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to AT21

No	REPAIR the circuit. GO to AT21

AT4 VERIFY THE FRONT MULTI-CONTOUR CONTROL PUMP OPERATES

Ignition OFF.

Ignition ON.

NOTE: A person needs to be seated in the passenger seat in order for the massage mode to operate. NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the touchscreen, place the passenger multi-contour seat into the MASSAGE mode.

Listen near the seat cushion to determine whether the front multi-contour control pump is on.

Is the front multi-contour control pump on?

Yes

GO to AT6

GO to AT5

AT5 CHECK THE FRONT MULTI-CONTOUR CONTROL PUMP CIRCUITS FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: SCMH C3386.

Disconnect: Passenger Front Multi-Contour Control Pump C3851.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3851-1 C3386-10

C3851-2 C3386-3

Are the resistances less than 3 ohms?

Yes

No	REPAIR the circuit in question. GO to AT21

AT6 CHECK THE FRONT MULTI-CONTOUR CONTROL PUMP HOSES FOR CORRECT INSTALLATION OR DAMAGE

Ignition OFF.

Visually inspect the front multi-contour control pump hoses for correct installation or damage and check the hose routing to make sure the entire length of the hoses are not restricted, bent, kinked or damaged.

Are the front multi-contour control pump hoses installed correctly with no damage?

Yes

No	REPAIR the hose(s) or INSTALL a new seat component as necessary.

AT7 CHECK THE BACKREST HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE

Ignition OFF.

Visually inspect the backrest hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

Are the backrest hoses installed correctly with no damage or restrictions?

Yes

For a concern with the front seat backrest bolsters, INSTALL a new front seat backrest bolster.
REFER to: Front Seat Backrest Bolster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AT19
For a concern with the front seat backrest adjuster, INSTALL a new front seat backrest adjuster.
REFER to: Front Seat Backrest Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AT19
For a concern with the front seat power lumbar assembly, GO to AT19

AT8 CHECK THE FRONT SEAT BACKREST ADJUSTER POWER CIRCUIT FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: Passenger Front Seat Backrest Adjuster C3885.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3885-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AT9

No	REPAIR the circuit. GO to AT21

AT9 CHECK THE FRONT SEAT BACKREST ADJUSTER GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3885-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AT10

No	REPAIR the circuit. GO to AT21

AT10 CHECK THE FRONT SEAT BACKREST ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: SCMH C3386.

Disconnect: Passenger Front Seat Cushion Adjuster C3387.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3885-2 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AT21

No	GO to AT11

AT11 CHECK THE FRONT SEAT BACKREST ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3885-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to AT12

No	REPAIR the circuit. GO to AT21

AT12 CHECK THE FRONT SEAT BACKREST ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3885-2 C3386-2

Is the resistance less than 3 ohms?

Yes

No	REPAIR the circuit. GO to AT21

AT13 CHECK THE CUSHION HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE

Ignition OFF.

Visually inspect the cushion hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose are not restricted (bends, kinks, etc...).

Are the cushion hoses installed correctly with no damage or restrictions?

Yes

For a concern with the front seat cushion bolsters, INSTALL a new front seat cushion bolster.
REFER to: Front Seat Cushion Bolster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AT19
For a concern with the front seat cushion adjuster, INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
Operate the system and determine if the concern is still present. If the concern is still present, GO to AT19

AT14 CHECK THE FRONT SEAT CUSHION ADJUSTER POWER CIRCUIT FOR AN OPEN

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Passenger Side Airbag In-line C3519.

Disconnect: Passenger Front Seat Cushion Adjuster C3887.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3887-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AT15

No	REPAIR the circuit. GO to AT21

AT15 CHECK THE FRONT SEAT CUSHION ADJUSTER GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3887-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AT16

No	REPAIR the circuit. GO to AT21

AT16 CHECK THE FRONT SEAT CUSHION ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: SCMH C3386.

Disconnect: Passenger Front Seat Backrest Adjuster C3880.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3887-3 Ground

Is any voltage present?

Yes

REPAIR the circuit. GO to AT21

No	GO to AT17

AT17 CHECK THE FRONT SEAT CUSHION ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3887-3 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to AT18

No	REPAIR the circuit. GO to AT21

AT18 CHECK THE FRONT SEAT CUSHION ADJUSTER LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3887-3 C3386-2

Is the resistance less than 3 ohms?

Yes

No	REPAIR the circuit. GO to AT21

AT19 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMH connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMH connector. Make sure it seats and latches correctly.

Reconnect all previously disconnected connectors and hoses.

Ignition ON.

NOTE: A person needs to be seated in the passenger seat in order for the massage mode to operate. Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

AT20 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMH connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCMH connector. Make sure it seats and latches correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3519 at this time. Reconnect all previously disconnected connectors and hoses.

Ignition ON.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to AT21

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to AT21

AT21 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Passenger Side Airbag In-line C3519.

Connect all previously disconnected connectors.

REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?

Yes

Repair is complete. RETURN the vehicle to the customer.

No	REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

PINPOINT TEST AU: DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG and SCMH communicate to the BCM using the MS-CAN . REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Set by the SCMG whenever it has lost communication to the BCM for 5 seconds or longer while the SCMC input voltage is between 10 and 15.5 volts.
SCMH U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Set by the SCMH whenever it has lost communication to the BCM for 5 seconds or longer while the SCMD input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
SCMG / SCMH
BCM

AU1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AU2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AU2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to AU3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AU3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0140:00 still present?

Yes

GO to AU4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AU4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?

Yes

INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	INSTALL a new front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AV: DTC: U0208:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG / SCMH communicate to the DSM using the CAN . REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG U0208:00	Lost Communication With 'Seat Control Module A': No Sub Type Information	Set by the SCMG whenever it has lost communication to the DSM for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts. When this DTC is set, the seat will only operate from the seat control switch.
SCMH U0208:00	Lost Communication With 'Seat Control Module A': No Sub Type Information	Set by the SCMH whenever it has lost communication to the DSM for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts. When this DTC is set, the seat will only operate from the seat control switch.

Possible Sources

Module communication
SCMG / SCMH
DSM

AV1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AV2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AV2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the DSM pass the network test?

Yes

GO to AV3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AV3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0208:00 still present?

Yes

GO to AV4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AV4 CHECK FOR DTC U0208:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0208:00 set in other modules?

Yes

INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

No	INSTALL a new front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AW: DTC: U024B:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMH communicates to the SCMG using the CAN . REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMH U024B:00	Lost Communication with Seat Control Module 'G': No Sub Type Information	Set by the SCMH whenever it has lost communication to the SCMG for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts. When this DTC is set, the seat will only operate from the seat control switch.

Possible Sources

Module communication
SCMG
SCMH

AW1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AW2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AW2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the SCMG pass the network test?

Yes

GO to AW3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AW3 RECHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMH self-test.

Is DTC U024B:00 still present?

Yes

GO to AW4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AW4 CHECK FOR DTC U024B:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U024B:00 set in other modules?

Yes

INSTALL a new driver front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

No	INSTALL a new passenger front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AX: DTC: U0253:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the APIM using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	Set by the SCMG whenever it has lost communication to the APIM for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts.
SCMH U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	Set by the SCMH whenever it has lost communication to the APIM for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
SCMG / SCMH
APIM

AX1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AX2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AX2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?

Yes

GO to AX3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AX3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0253:00 still present?

Yes

GO to AX4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AX4 CHECK FOR DTC U0253:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0253:00 set in other modules?

Yes

INSTALL a new APIM . Refer to the appropriate section in Group 415 for the procedure.

No	INSTALL a new front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AY: DTC: U0256:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the FCIM using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG U0256:00	Lost Communication With Front Controls Interface Module 'A': No Sub Type Information	Set by the SCMG whenever it has lost communication to the FCIM for 5 seconds or longer while the SCMG input voltage is between 10 and 15.5 volts.
SCMH U0256:00	Lost Communication With Front Controls Interface Module 'A': No Sub Type Information	Set by the SCMH whenever it has lost communication to the FCIM for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts.

Possible Sources

Module communication
SCMG / SCMH
FCIM

AY1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AY2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AY2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the FCIM pass the network test?

Yes

GO to AY3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AY3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0256:00 still present?

Yes

GO to AY4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AY4 CHECK FOR DTC U0256:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0256:00 set in other modules?

Yes

INSTALL a new FCIM .
REFER to: Front Controls Interface Module (FCIM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	INSTALL a new front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST AZ: DTC: U0455:82

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

The SCMG and SCMH communicate to the OCSM using the CAN .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMH U0455:82	Invalid Data Received From Restraints Occupant Classification System Module 'A': Alive/Sequence Counter Incorrect/Not Updated	Set by the SCMH whenever it has received an invalid status from the OCSM .

Possible Sources

Module communication
SCMH
OCSM

AZ1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AZ2

No	The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AZ2 CHECK THE COMMUNICATION NETWORK

Ignition ON.

Using a diagnostic scan tool, perform the network test.

Does the OCSM pass the network test?

Yes

GO to AZ3

No	REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AZ3 RECHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Using a diagnostic scan tool, repeat the SCMH self-test.

Is DTC U0455:82 still present?

Yes

GO to AZ4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AZ4 CHECK FOR DTC U0455:82 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0455:82 set in other modules?

Yes

INSTALL a new OCSM .
REFER to: Occupant Classification System (OCS) Sensor (501-20B Supplemental Restraint System, Removal and Installation).

No	INSTALL a new front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

PINPOINT TEST BA: DTC: U2100:00

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

Using a diagnostic scan tool, CARRY OUT PMI on the SCMG / SCMH . REPEAT the self-test and VERIFY successful PMI . REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG U2100:00	Initial Configuration Not Complete: No Sub Type Information	This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.
SCMH U2100:00	Initial Configuration Not Complete: No Sub Type Information	This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

PMI has not been done to a newly installed module or configuration data has been lost.

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST BB: DTC: U3000:49

Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

INSTALL a new front seat power lumbar assembly. REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCMG U3000:49	Control Module: Internal Electronic Failure	This DTC indicates there is an internal failure in the module. The module must be replaced.
SCMH U3000:49	Control Module: Internal Electronic Failure	This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

SCMG / SCMH

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Front Seats - System Operation and Component Description. Description and Operation

S..

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Diagnostic Methods. Description and Operation

This document provides critical diagnostic knowledge required for successful repair outcomes. It identifies technical competencies expected by users of this manual.

Ford Diagnostic Assumptions

Ford diagnostics assume the vehicle concern described by the test title is currently present. Exceptions to this rule are noted in each test. Do not replace modules or other components as directed by a diagnostic if the concern is not present at the time of testing.

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Diagnostic Methods. Description and Operation