Lincoln Navigator Manuals

Lincoln Navigator: Starting System - 3.5L EcoBoost (272kW/370PS) / Starting System. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Engine / Starting System - 3.5L EcoBoost (272kW/370PS) / Starting System. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

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).


Module DTC Description Action
BCM B15DB:09 Vehicle Starter Motor: Component Failures GO to Pinpoint Test G
BCM C113A:11 Wakeup Control: Circuit Short To Ground GO to Pinpoint Test D
BCM C113A:15 Wakeup Control: Circuit Short To Battery Or Open GO to Pinpoint Test D
PCM P06E4:00 Control Module Wake-up Circuit Performance: No Sub Type Information GO to Pinpoint Test E
PCM P06E9:00 Engine Starter Performance: No Sub Type Information GO to Pinpoint Test A
PCM P06E9:00 Engine Starter Performance: No Sub Type Information GO to Pinpoint Test B
PCM P162F:00 Starter Motor Disabled - Engine Crank Time Too Long: No Sub Type Information GO to Pinpoint Test F
PCM P2535:00 Ignition Switch On/Start Position Circuit High: No Sub Type Information GO to Pinpoint Test A
PCM P2535:00 Ignition Switch On/Start Position Circuit High: No Sub Type Information GO to Pinpoint Test B

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.


Symptom Action
Start/Run/Move > Starting > No Crank > Always GO to Pinpoint Test A
Start/Run/Move > Starting > No Crank > Always GO to Pinpoint Test B
Start/Run/Move > Starting > No Crank > Always GO to Pinpoint Test I
Start/Run/Move > Starting > Slow Crank/Battery > Always GO to Pinpoint Test H
Start/Run/Move > Starting > Cranks Won't Start > Always GO to Pinpoint Test M
Start/Run/Move > Starting > Push Button Start > Inoperative GO to Pinpoint Test B
Start/Run/Move > Starting > Auto-Start-Stop > Inoperative GO to Pinpoint Test K
Start/Run/Move > Starting > Auto-Start-Stop > Inoperative GO to Pinpoint Test L
Start/Run/Move > Noise > Running/Standing > Always GO to Pinpoint Test C
Start/Run/Move > Noise > Running/Standing > Always GO to Pinpoint Test J

Symptom Chart(s)

Symptom Chart: Starting System

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practice.


  Symptom Chart


Condition Possible Sources Actions
The engine cranks but will not start Refer to the Pinpoint Test.   GO to Pinpoint Test M
The engine cranks slowly Refer to the Pinpoint Test.   GO to Pinpoint Test H
The starter spins but the engine does not crank Refer to the Pinpoint Test.   GO to Pinpoint Test I
The starter does not disengage from the flexplate Refer to the Pinpoint Test.   GO to Pinpoint Test J
Unusual starter noise Refer to the Pinpoint Test.   GO to Pinpoint Test C

Symptom Chart: Auto-Start-Stop System

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
Auto-Start-Stop System is inoperative or does not operate correctly Refer to the Pinpoint Test.   GO to Pinpoint Test K
Auto-Start-Stop System cannot be disabled by driver Refer to the Pinpoint Test.   GO to Pinpoint Test L

Pinpoint Test(s)


PINPOINT TEST A: ENGINE DOES NOT CRANK - WITHOUT PUSH-BUTTON START

Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Starting System - System Operation and Component Description (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P06E9:00 Engine Starter Performance: No Sub Type Information The PCM sets this DTC when no engine rotation is detected during a crank event.
PCM P2535:00 Ignition Switch On/Start Position Circuit High: No Sub Type Information This DTC sets when the PCM detects voltage on the crank detect circuit while the engine is running.

Possible Sources

  • Battery
  • Battery cables
  • IPC
  • Starter motor
  • BJB starter relay

Visual Inspection and Pre-checks

  • Inspect the run/start relay.
  • Inspect the high current BJB connections.
  • Verify the BJB fuse 11 (30A).
  • Inspect the passive key.
  • Inspect the CPP switch.

NOTE: Make sure battery voltage is greater than 12.2 volts prior to and during this pinpoint test.

NOTE: Do not have a battery charger attached during vehicle testing.

A1 PERFORM INSPECTION AND VERIFICATION
  • Perform Inspection and Verification procedure in this section.

Was an obvious cause for an observed or reported concern found?
Yes Correct the cause as necessary.
No GO to A2

A2 VERIFY THE BCM (BODY CONTROL MODULE) AND PCM (POWERTRAIN CONTROL MODULE) PASS THE NETWORK TEST
  • Ignition ON.
  • Using a diagnostic scan tool, perform the Network Test.

Did the BCM and PCM pass the Network Test?
Yes GO to A3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

A3 RETRIEVE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform BCM and PCM self-tests.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For all BCM Diagnostic Trouble Codes (DTCs), refer to the BCM DTC Chart in this section.
For PCM DTC P06E9, GO to A4
For all other PCM Diagnostic Trouble Codes (DTCs),
REFER to: Electronic Engine Controls (303-14 Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS), Diagnosis and Testing).
No GO to A4

A4 CHECK BCM (BODY CONTROL MODULE) IGN_SW_STATE PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Monitor the BCM PID IGN_SW_STATE while turning the ignition switch from OFF to START.

Does the PID change from Off to Start when the ignition switch is turned from OFF to START?
Yes GO to A5
No DIAGNOSE No power in ON.
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

A5 CHECK THE TRANSMISSION RANGE INPUT ALLOWING ENGINE START (TR_CRANK) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the TCM Parameter Identifications (PIDs).
  • Monitor the TCM PID TR_CRANK, while placing the gear selector in PARK and then NEUTRAL.

Does the PID read Yes in both positions?
Yes GO to A6
No
REFER to: DTC Chart and Pinpoint Tests - 3.5L EcoBoost (272kW/370PS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Diagnosis and Testing).

A6 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID (PARAMETER IDENTIFICATION)
  • Make sure the transmission is in PARK or NEUTRAL.
  • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).
  • Monitor the PCM PID ENG_CRANK while turning the ignition switch to the START position.

Does the PID change from Inactive to Active?
Yes GO to A7
No GO to A17

A7 CHECK THE BJB (BATTERY JUNCTION BOX) STARTER RELAY FUSE
  • Verify the BJB fuse 11 (30A).

Was the fuse OK?
Yes GO to A8
No REPAIR the circuit for a short to ground.

A8 CHECK FOR START REQUEST AT THE STARTER
  • Disconnect Starter solenoid C1716B .
  • While holding the key in the START position, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    C1716B-1 ("S" terminal)   Ground

Is the voltage greater than 11 volts?
Yes GO to A13
No Connect Starter solenoid C1716B and GO to A9

A9 CHECK THE STARTER MOTOR CONTROL OPERATION
  • Disconnect BJB Relay Module C1035C .
  • Connect a remote starter switch:
    Positive Lead Measurement / Action Negative Lead
      C1035C-3 Remote Starter Switch
  • Momentarily engage the remote starter switch.

Does the engine crank?
Yes GO to A10
No REPAIR circuit for open.

A10 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CONTROL CIRCUITS FOR A SHORT TO VOLTAGE
  • Connect BJB Relay Module C1035C .
  • Disconnect PCM C175B .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-60   Ground
      C175B-11   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to A11

A11 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CONTROL CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect PCM C175B .
  • Disconnect BJB Relay Module C1035C .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-60   Ground
      C175B-11   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to A12
No REPAIR the affected circuit.

A12 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CONTROL CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-60   C1035C-23
      C175B-11   C1035C-25

Is the resistance less than 3 ohms?
Yes INSTALL a new BJB relay module.
No REPAIR the affected circuit. CHECK the system for proper operation. If engine will still not crank, GO to A18

A13 CHECK THE STARTER MOTOR FOR CORRECT OPERATION
  • Perform Starter Motor - Positive Circuit Test.
    REFER to: Starter Amperage Draw Test (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), General Procedures).

Was an obvious cause found?
Yes Correct the cause as necessary.
No GO to A14

A14 CHECK THE BATTERY GROUND CABLES
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Ground G105
    Ground G106
    Ground G107

Are the voltages greater than 11 volts?
Yes GO to A15
No CLEAN or INSTALL anew negative battery cable as necessary.
REFER to: Battery Cables (414-01 Battery, Mounting and Cables, Removal and Installation).

A15 CHECK THE STARTER MOTOR GROUND
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Starter motor case

Is the voltage greater than 11 volts?
Yes GO to A16
No CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
REFER to: Starter Motor (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Removal and Installation).

A16 CHECK THE VOLTAGE TO THE STARTER MOTOR
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    C1716A-1 ("B" terminal)   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new starter motor.
REFER to: Starter Motor (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
No INSTALL a new positive battery cable.
REFER to: Battery Cables (414-01 Battery, Mounting and Cables, Removal and Installation).

A17 CHECK PCM (POWERTRAIN CONTROL MODULE) FOR CRANK REQUEST
  • Disconnect PCM C1915B .
  • While holding the key in the START position, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    C175B-1 ("S" terminal)   Ground

Is the voltage greater than 11 volts?
Yes GO to A18
No REPAIR circuit for open.

A18 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all PCM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the PCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,
   Click here to access Guided Routine (PCM).
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: ENGINE DOES NOT CRANK - WITH PUSH-BUTTON START

Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Starting System - System Operation and Component Description (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P06E9:00 Engine Starter Performance: No Sub Type Information The PCM sets this DTC when no engine rotation is detected during a crank event.
PCM P2535:00 Ignition Switch On/Start Position Circuit High: No Sub Type Information This DTC sets when the PCM detects voltage on the crank detect circuit while the engine is running.

Possible Sources

  • Battery
  • Battery cables
  • IPC
  • Starter motor
  • BJB starter relay

Visual Inspection and Pre-checks

  • Inspect the run/start relay.
  • Inspect the high current BJB connections.
  • Verify the BJB fuse 36 (30A).
  • Inspect the passive key.
  • Inspect the CPP switch.
B1 PERFORM INSPECTION AND VERIFICATION
  • Perform Inspection and Verification procedure in this section.

Was an obvious cause for an observed or reported concern found?
Yes Correct the cause as necessary.
No GO to B2

B2 CHECK FOR NO KEY DETECTED MESSAGE IN THE MESSAGE CENTER
  • NOTE: There are certain areas inside the vehicle where the IA key may not be detected and the message center displays NO KEY DETECTED. If the IA key is in the far outside edges of the interior (like in a door map pocket or above a sun visor) it might not be detected. Move the IA key to a different location and try to start the vehicle again. Check the message displayed in the message center while pressing the ignition switch - push button start.

Is NO KEY DETECTED displayed?
Yes Diagnose the NO KEY DETECTED concern.
REFER to: Perimeter Anti-Theft Alarm (419-01A Perimeter Anti-Theft Alarm, Diagnosis and Testing).
No GO to B3

B3 VERIFY THE BCM (BODY CONTROL MODULE) AND PCM (POWERTRAIN CONTROL MODULE) PASS THE NETWORK TEST
  • Ignition ON.
  • Using a diagnostic scan tool, perform the Network Test.

Did the BCM and PCM pass the Network Test?
Yes GO to B4
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

B4 RETRIEVE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform BCM and PCM self-tests.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For all BCM Diagnostic Trouble Codes (DTCs), refer to the BCM DTC Chart in this section.
For PCM DTC P06E9 GO to B5
For all other PCM Diagnostic Trouble Codes (DTCs),
REFER to: Electronic Engine Controls (303-14 Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS), Diagnosis and Testing).
No GO to B5

B5 CHECK THE OPERATION OF THE STOPLAMPS
  • While observing the stoplamps, apply the brake pedal.

Do the stoplamps illuminate?
Yes GO to B6
No Diagnose All the Stoplamps are inoperative.
REFER to: Stoplamps (417-01 Exterior Lighting, Diagnosis and Testing).

B6 CHECK THE BRAKE PEDAL POSITION (BOO1) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs)
  • Monitor the PCM B001 PID while applying the brake pedal.

Does the PID read On?
Yes GO to B8
No GO to B7

B7 CHECK THE BPP (BRAKE PEDAL POSITION) SWITCH CIRCUIT FOR VOLTAGE AT THE PCM (POWERTRAIN CONTROL MODULE)
  • Ignition OFF.
  • Disconnect PCM C175B .
  • While applying the brake pedal, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-87   Ground

Is the voltage greater than 11 volts?
Yes GO to B22
No REPAIR the circuit.

B8 CHECK BCM (BODY CONTROL MODULE) IGN_SW_STATE PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identifications (PIDs).
  • Make sure the transmission is in PARK or NEUTRAL.
  • Monitor the BCM PID IGN_SW_STATE while pressing the ignition switch - push button start and the brake pedal.

Does the PID change from Off to Start when the ignition switch - push button start and the brake pedal are pressed?
Yes GO to B9
No DIAGNOSE No power in ON.
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

B9 CHECK THE TRANSMISSION RANGE INPUT ALLOWING ENGINE START (TR_CRANK) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the TCM Parameter Identifications (PIDs).
  • Monitor the TCM PID TR_CRANK, while placing the gear selector in PARK and then NEUTRAL.

Does the PID read Yes in both positions?
Yes GO to B10
No
REFER to: DTC Chart and Pinpoint Tests - 3.5L EcoBoost (272kW/370PS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Diagnosis and Testing).

B10 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID (PARAMETER IDENTIFICATION)
  • Make sure the transmission is in PARK or NEUTRAL.
  • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).
  • Monitor the PCM PID ENG_CRANK while pressing the ignition switch - push button start and the brake pedal.

Does the PID change from Inactive to Active?
Yes GO to B11
No GO to B21

B11 CHECK THE BJB (BATTERY JUNCTION BOX) STARTER RELAY FUSE
  • Verify the BJB fuse 11 (30A).

Was the fuse OK?
Yes GO to B12
No REPAIR the circuit for a short to ground.

B12 CHECK FOR START REQUEST AT THE STARTER
  • Disconnect Starter solenoid C1716B .
  • While holding the key in the START position, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    C1716B-1 ("S" terminal)   Ground

Is the voltage greater than 11 volts?
Yes GO to B17
No Connect Starter solenoid C1716B and GO to B13

B13 CHECK THE STARTER MOTOR CONTROL OPERATION
  • Disconnect BJB Relay Module C1035C .
  • Connect a remote starter switch:
    Positive Lead Measurement / Action Negative Lead
      C1035C-3 Remote Starter Switch
  • Momentarily engage the remote starter switch.

Does the engine crank?
Yes GO to B14
No REPAIR circuit for open.

B14 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CONTROL CIRCUITS FOR A SHORT TO VOLTAGE
  • Connect BJB Relay Module C1035C .
  • Disconnect PCM C175B .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-60   Ground
      C175B-11   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to B15

B15 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CONTROL CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect PCM C175B .
  • Disconnect BJB Relay Module C1035C .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-60   Ground
      C175B-11   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B16
No REPAIR the affected circuit.

B16 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CONTROL CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-60   C1035C-23
      C175B-11   C1035C-25

Are the resistances less than 3 ohms?
Yes INSTALL a new BJB relay module.
No REPAIR the affected circuit. CHECK the system for proper operation. If engine will still not crank, GO to B22

B17 CHECK THE STARTER MOTOR FOR CORRECT OPERATION
  • Perform Starter Motor - Positive Circuit Test.
    REFER to: Starter Amperage Draw Test (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), General Procedures).

Was an obvious cause found?
Yes Correct the cause as necessary.
No GO to B18

B18 CHECK THE BATTERY GROUND CABLES
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Ground G105
    Ground G106
    Ground G107

Are the voltages greater than 11 volts?
Yes GO to B19
No CLEAN or INSTALL anew negative battery cable as necessary.
REFER to: Battery Cables (414-01 Battery, Mounting and Cables, Removal and Installation).

B19 CHECK THE STARTER MOTOR GROUND
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Starter motor case

Is the voltage greater than 11 volts?
Yes GO to B20
No CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
REFER to: Starter Motor (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Removal and Installation).

B20 CHECK THE VOLTAGE TO THE STARTER MOTOR
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    C1716A-1 ("B" terminal)   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new starter motor.
REFER to: Starter Motor (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
No INSTALL a new positive battery cable.
REFER to: Battery Cables (414-01 Battery, Mounting and Cables, Removal and Installation).

B21 CHECK PCM (POWERTRAIN CONTROL MODULE) FOR CRANK REQUEST
  • Disconnect PCM C175B .
  • While holding the key in the START position, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    C175B-1 ("S" terminal)   Ground

Is the voltage greater than 11 volts?
Yes GO to B22
No REPAIR circuit for open.

B22 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all PCM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the PCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,
   Click here to access Guided Routine (PCM).
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 C: UNUSUAL STARTER NOISE

Normal Operation and Fault Conditions

Correct starter operation relies on correct mounting of the starter to the engine, alignment of the starter ring gear to the flexplate and correct functioning of the starter assembly (internal gears, bearings).

Possible Sources

  • Engine
  • Starter motor
  • Starter motor mounting

Visual Inspection and Pre-checks

  • Inspect the starter motor.
  • Inspect the starter motor mounting.
C1 CHECK THE STARTER MOUNTING
  • Inspect the starter mounting bolts for looseness.

Is the starter motor mounted correctly?
Yes GO to C2
No INSTALL the starter motor correctly.
REFER to: Starter Motor (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), Removal and Installation).

C2 CHECK FOR STARTER NOISE
  • Ignition OFF.
  • Connect a remote starter switch between the starter solenoid C1715A-1 ("B" terminal) and C1715B-1 ("S" terminal).
  • Engage the starter and verify the noise is due to starter operation.

Is the noise due to the starter engagement?
Yes
REFER to: Starter Motor Drive Gear and Flywheel Ring Gear Inspection (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), General Procedures).
No
REFER to: Engine (303-00 Engine System - General Information, Diagnosis and Testing).
to continue diagnosis.

PINPOINT TEST D: C113A:11, C113A:15

Refer to Wiring Diagrams Section - for schematic and connector information. Refer to Wiring Diagrams Cell 23 for schematic and connector information.

Normal Operation and Fault Conditions

The wake-up control circuit wakes up the PCM prior to the engine cranking. The PCM needs to wake up prior to a crank request so it has time to go through its initialization. The wake-up control circuit is controlled by the BCM . The BCM activates the wake-up control circuit when the driver door is opened, the BCM detects a passive key, or when the Engine start button is pressed.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM C113A:11 Wakeup Control: Circuit Short To Ground Set by the BCM when a short to ground is detected on the wake-up control circuit.
BCM C113A:15 Wakeup Control: Circuit Short To Battery Or Open Set by the BCM when a short to voltage or an open is detected on the wake-up control circuit.

Possible Sources

  • BCM
  • PCM
  • Wiring, terminals or connectors
D1 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC C113A:11 present?
Yes GO to D2
No If DTC C113A:15 is present, GO to D4
For all other BCM Diagnostic Trouble Codes (DTCs),
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

D2 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect PCM C175B .
  • Ignition ON.
  • Using a diagnostic scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).
  • Using a diagnostic scan tool, perform the BCM self-test.

Is BCM DTC C113A:11 present?
Yes GO to D3
No GO to D7

D3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-73   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to D7
No REPAIR the circuit.

D4 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect PCM C175B if necessary.
  • Disconnect BCM C2280E .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-73   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to D5

D5 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-73   C2280F-18

Is the resistance less than 3 ohms?
Yes GO to D6
No REPAIR the circuit.

D6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, 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.

D7 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all PCM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the PCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,
   Click here to access Guided Routine (PCM).
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 E: DTC P06E4

Refer to Wiring Diagrams Cell 25 for schematic and connector information.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P06E4:00 Control Module Wake-up Circuit Performance: No Sub Type Information This DTC sets when the PCM detects control module Wake-up circuit performance.

Possible Sources

  • PCM
  • Wiring, terminals or connectors
E1 RETRIEVE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform PCM self-tests.

Is DTC P06E4 recorded?
Yes RETRIEVE and RECORD all CMDTCs. If BCM DTC C113A:11 or C113A:15 is found, GO to Pinpoint Test D Clear all Diagnostic Trouble Codes (DTCs). RERUN the PCM self-test. If the DTC returns, CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If no Technical Service Bulletins (TSBs) address this concern,
   Click here to access Guided Routine (PCM).
No The repair is completed.

PINPOINT TEST F: DTC P162F

Refer to Wiring Diagrams Cell 25 for schematic and connector information.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P162F:00 Starter Motor Disabled - Engine Crank Time Too Long: No Sub Type Information This DTC sets when the PCM detects Engine Crank Time Too Long.

Possible Sources

  • PCM
  • Wiring, terminals or connectors
F1 RETRIEVE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform PCM self-tests.

Is DTC P162F recorded?
Yes This DTC sets in the PCM when the engine has been cranked for more than a total of 60 seconds without allowing sufficient time for the starter to cool. Diagnose all other DTCs and symptoms. Check the charging system voltage and correct as necessary. Clear the DTC
No The repair is completed.

PINPOINT TEST G: B15DB:09

Normal Operation and Fault Conditions

The starter motor electrical connection may be faulty, the solenoid switch engagement relay is faulty or the pinion gear or starter pinion or flywheel is damaged. REFER to: Starter Amperage Draw Test (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), General Procedures).
REFER to: Starter Motor Drive Gear and Flywheel Ring Gear Inspection (303-06 Starting System - 3.5L EcoBoost (272kW/370PS), General Procedures).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B15DB:09 Vehicle Starter Motor: Component Failures This DTC sets when a starter motor component failure or malfunction has been detected by the PCM.

Possible Sources

  • Starter motor or relay
  • Starter motor ring gear
  • Starter motor solenoid switch or coil

Visual Inspection and Pre-checks

  • Starter motor cracked or damaged
  • Damaged flexplate
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST H: THE ENGINE CRANKS SLOWLY

Possible Sources

  • Battery
  • Starter motor
H1 CHECK THE ENGINE CRANKING
  • Ignition ON.

Does engine crank slowly?
Yes PERFORM the starter system component test. REFER to Starter Motor - Positive Circuit Test in this section.
No The repair is completed.

PINPOINT TEST I: THE STARTER SPINS BUT THE ENGINE DOES NOT CRANK

Possible Sources

  • Starter motor
  • Damaged flexplate

Visual Inspection and Pre-checks

  • INSPECT the flexplate for damaged, missing or worn teeth. REPAIR as necessary
  • INSPECT the starter motor mounting and engagement. REPAIR as necessary.
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST J: THE STARTER DOES NOT DISENGAGE FROM THE FLEXPLATE

Normal Operation and Fault Conditions

REMOVE the starter relay. If the engine stops cranking, INSTALL a new relay. If the engine continues to crank, REPAIR circuit CDC35 (BU/WH) for a short to voltage.

Possible Sources

  • Starter relay
  • Wiring, terminals or connectors
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST K: AUTO-START-STOP SYSTEM IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Normal Operation and Fault Conditions

  • RETRIEVE all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • For PCM Diagnostic Trouble Codes (DTCs), REFER to PCM DTC Chart in this section.
  • For BCM Diagnostic Trouble Codes (DTCs), REFER to BCM DTC Chart in this section.

Possible Sources

  • Electronic Control Modules
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST L: AUTO-START-STOP SYSTEM CANNOT BE DISABLED BY DRIVER

Normal Operation and Fault Conditions


  • Refer to Wiring Diagrams Cell 40 for schematic and connector information.
  • REFER to BCM DTC Chart in this section.
  • Refer to the appropriate section in Group 415 for the procedure.

Possible Sources

  • Wiring, terminals or connectors
  • Auto-start-stop disable switch
  • FCIM
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 ENGINE CRANKS BUT WILL NOT START

Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Engine Starting Control System (303-14 Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS), Diagnosis and Testing).

Possible Sources

  • Spark (as related to electronic engine control)
  • PCM
  • CKP sensor issues
  • Ignition coil issues
  • Fuel issues
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

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