Lincoln Navigator Manuals

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

Lincoln Navigator 2018-2025 Workshop Manual / Battery and Charging System / Charging System - General Information / Charging System - 3.5L EcoBoost (272kW/370PS). 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 B11D9:16 Vehicle Battery: Circuit Voltage Below Threshold GO to Pinpoint Test A
BCM B11D9:16 Vehicle Battery: Circuit Voltage Below Threshold GO to Pinpoint Test B
BCM B11DB:02 Battery Monitoring Module 'A': General Signal Failure GO to Pinpoint Test E
BCM B11DB:08 Battery Monitoring Module 'A': Bus Signal/Message Failures GO to Pinpoint Test E
BCM B11DB:09 Battery Monitoring Module 'A': Component Failures GO to Pinpoint Test E
BCM B11DB:11 Battery Monitoring Module 'A': Circuit Short To Ground GO to Pinpoint Test E
BCM B11DB:49 Battery Monitoring Module 'A': Internal Electronic Failure GO to Pinpoint Test I
BCM B11DB:55 Battery Monitoring Module 'A': Not Configured GO to Pinpoint Test J
BCM B11DB:9A Battery Monitoring Module 'A': Component or System Operating Conditions GO to Pinpoint Test E
BCM B130C:12 Load Shed Control: Circuit Short To Battery GO to Pinpoint Test E
BCM B130C:14 Load Shed Control: Circuit Short To Ground Or Open GO to Pinpoint Test E
PCM P0562:00 System Voltage Low: No Sub Type Information GO to Pinpoint Test B
PCM P0563:00 System Voltage High: No Sub Type Information GO to Pinpoint Test A
PCM P065B:00 Generator 'A' Control Circuit Range/Performance: No Sub Type Information GO to Pinpoint Test B
PCM P065C:00 Generator 'A' Mechanical Performance: No Sub Type Information GO to Pinpoint Test B
PCM P0A3B:00 Generator 'A' Over Temperature: No Sub Type Information GO to Pinpoint Test H
PCM U012D:00 Lost Communication With Generator 'A' Control Module: No Sub Type Information GO to Pinpoint Test F
PCM U042E:00 Invalid Data Received From Generator 'A' Control Module: No Sub Type Information GO to Pinpoint Test F

Global Customer Symptom Code (GCSC) Chart

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


Symptom Action
Comfort & Entertainment > Audio > Radio FM > Sound Quality GO to Pinpoint Test D
Driver Aid & Information > Warning Indicators/Messages/Chimes > Charging System > Stays On GO to Pinpoint Test A
Driver Aid & Information > Warning Indicators/Messages/Chimes > Charging System > Stays On GO to Pinpoint Test B
Driver Aid & Information > Warning Indicators/Messages/Chimes > Charging System > Stays On GO to Pinpoint Test K
Start/Run/Move > Noise > Running/Standing > Always GO to Pinpoint Test C
Start/Run/Move > Noise > Running/Standing > Always GO to Pinpoint Test G

Symptom Chart(s)

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

Symptom Possible Sources Action
  • System voltage high
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A
  • System voltage low or battery is discharged
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test B
  • The generator is noisy
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
  • Radio interference
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test D
  • Charging system warning indicator is never or always ON
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test K

Pinpoint Tests


PINPOINT TEST A: SYSTEM VOLTAGE HIGH

NOTE: Diagnostic Trouble Code (DTC ) P0563 can be set if the vehicle has been recently jump started or the battery has been recently charged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if vehicle accessories have been operating for an extended period of time without the engine running.


Refer to Wiring Diagrams Cell 12 for schematic and connector information.

Normal Operation and Fault Conditions

With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the BJB and battery B+ cable. The voltage that is supplied to the vehicle electrical system is used for the operation of the various vehicle systems and modules. Many modules monitor this voltage and if it rises above or below their calibrated setpoints, a DTC sets.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P0563:00 System Voltage High: No Sub Type Information This DTC sets in the PCM when the PCM detects voltage from the charging system greater than 15.9 volts with vehicle speed above 8 km/h (5 mph).
BCM B11D9:16 Vehicle Battery: Circuit Voltage Below Threshold A continuous and on-demand DTC that sets in the BCM if the BCM detects higher than expected battery voltage on the voltage supply input circuit.

Possible Sources

  • Battery
  • Generator
  • Engine, generator or battery ground
  • PCM
  • BCM
  • Wiring, terminals or connectors

Visual Inspection and Pre-checks

  • Inspect GND s G106, G107 and G109 for loose, damaged or corroded connections.
  • Inspect the BJB for loose, damaged or corroded connections.
  • Inspect BJB fuse F201 (300A)

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 MONITOR THE GENERATOR VOLTAGE DESIRED (GENVDSD) PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).
  • Monitor the PCM GENVDSD PID .

Does the PID indicate 15.9 volts or less?
Yes GO to A3
No GO to A9

A3 COMPARE THE GENERATOR VOLTAGE DESIRED (GENVDSD) PID (PARAMETER IDENTIFICATION) WITH BATTERY VOLTAGE
  • With the engine still running at idle, measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Using a diagnostic scan tool, view the PCM PID GENVDSD.

Is the recorded battery voltage within ±0.5 volt of the PID ?
Yes The system is operating correctly at this time. The concern may have been caused by an intermittently loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
No GO to A4

A4 CHECK THE VOLTAGE DROP IN THE VEHICLE GROUNDS
  • With the engine still running at idle, headlamps on and heater blower on high, measure the voltage drop between generator case and the battery negative terminal
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
    Generator case

Is the voltage drop less than 0.5 volt?
Yes GO to A5
No INSPECT and REPAIR the engine ground, generator ground or the battery ground for corrosion.

A5 MONITOR THE GENERATOR VOLTAGE DESIRED (GENVDSD) PID (PARAMETER IDENTIFICATION) WHILE COMMANDED
  • Using a diagnostic scan tool, view the PCM GENVDSD PID .
  • Using a diagnostic scan tool active command, set the PCM PID GENVDSD to 14.5 volts.
  • With the engine still running at idle, measure battery and record:
    Positive Lead Measurement / Action Negative Lead

Is the recorded battery voltage within ±0.5 volt of the PID ?
Yes GO to A6
No Check all generator wiring harness, Battery and BJB looseness, corrosion, loose or bent terminals, or loose eyelets before installing a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).

A6 CHECK THE GENERATOR OUTPUT
  • Using a diagnostic scan tool active command, set the PCM PID GENVDSD to 14.5 volts.
  • With the engine running, measure and record:
    Positive Lead Measurement / Action Negative Lead
      Ground

Is the recorded battery voltage within ±0.5 volt of the PID?
Yes GO to A7
No Check all generator wiring harness for looseness, corrosion, loose or bent terminals, or loose eyelets before installing a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).

A7 COMPARE THE SUPPLY VOLTAGE (VPWR) PID (PARAMETER IDENTIFICATION) TO BATTERY VOLTAGE
  • With the engine running at idle, measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).
  • Monitor the PCM PID VPWR.

Does the PID accurately display battery voltage within ±0.5 volt of the recorded battery voltage?
Yes Check all generator wiring harness for looseness, corrosion, loose or bent terminals, or loose eyelets before installing a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).
No GO to A8

A8 CHECK PCM SUPPLY VOLTAGE CIRCUITS
  • Turn the headlamps and heater blower off.
  • Ignition OFF.
  • Disconnect PCM C175B .
  • Connect a 5 amp fused jumper wire between the following:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    PCMRC (PCM Relay Control) C175B-74   Ground
  • KOEO
  • Measure and record:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    VPWR C175B-2   Ground
    VPWR C16-2   Ground
    VPWR C175B-17   Ground

Are the voltages within 0.5 volt of the recorded battery voltage?
Yes GO to A9
No REPAIR the affected circuit(s).

A9 CHECK FOR CORRECT PCM OPERATION
  • Ignition OFF.
  • Disconnect and inspect all PCM connectors.
  • Repair:
    • corrosion (install new connector 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 TSB 's. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB 's 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: SYSTEM VOLTAGE LOW OR BATTERY IS DISCHARGED

Refer to Wiring Diagrams Cell 12 for schematic and connector information.

Normal Operation and Fault Conditions

With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the BJB and battery B+ cable. The PCM monitors this B+ voltage through PCM VPWR circuits. If the charging system voltage drops 1.5 volts or more below the generator voltage desired (GENVDSD), the DTC sets and the charging system MIL illuminates after 30 seconds.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P0562:00 System Voltage Low: No Sub Type Information If the PCM determines the wiring resistance is greater than 0.005 ohms this DTC sets after 30 seconds. If the PCM determines the wiring resistance is too high this DTC sets after 30 seconds. At lower electrical loads the resistance check is more likely to trigger the DTC than the voltage drop.
PCM P065B:00 Generator 'A' Control Circuit Range/Performance: No Sub Type Information This DTC sets when the generator reports an internal regulator failure, as well as if the battery is completely discharged and the engine cannot start.
PCM P065C:00 Generator 'A' Mechanical Performance: No Sub Type Information This DTC sets when the generator reports an internal mechanical failure.
BCM B11D9:16 Vehicle Battery: Circuit Voltage Below Threshold A continuous and on-demand DTC that sets in the BCM if the BCM detects lower than expected battery voltage on the voltage supply input circuit.

Possible Sources

  • Battery
  • Fuses or fusible links
  • Generator
  • PCM
  • BCM
  • Wiring, terminals or connectors

Visual Inspection and Pre-checks

  • Inspect the FEAD system.
  • Inspect for abnormal ignition-off current drain(s).
  • Inspect the battery.
  • Inspect the B+ CIRCUIT for loose or corroded connections.
  • Verify B+ terminal Fuse F201 (300A) .

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.

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 RETRIEVE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform the PCM self-test.

Is DTC P065B, P065C, U012D or U042E present?
Yes If P065B and P065C are present, GO to Pinpoint Test C
If P065B is currently active without P065C, INSTALL a new generator. The DTC P065B can be triggered if the 12V battery was discharged enough not to start the vehicle.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation). If the vehicle equipped with Active Grill Shutters DTC U012D or U042E is present, GO to Pinpoint Test F
No GO to B3

B3 CHECK THE GENERATOR CONNECTIONS
  • Ignition OFF.
  • Disconnect all of the generator connectors and inspect for:
    • corrosion (install new connector) or eyelets.
    • damaged or bent pins – install new terminals/pins.
    • pushed-out pins – install new pins as necessary.
  • Reconnect the generator connectors. Make sure they seat and latch correctly.
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C102B-1   Ground

Is the voltage within 0.5 volt of the recorded battery voltage?
Yes GO to B4
No TIGHTEN or INSTALL a new generator B+ nut as needed.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).
VERIFY the BJB fuse F201 (300A) 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.

B4 CHECK THE VOLTAGE DROP IN THE GENERATOR B+ CIRCUIT
  • Start the engine.
  • With the engine running at idle, headlamps on and blower on high, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C102B-1
  • Perform a wiggle test of the generator wiring and connections while measuring voltage drop.

Is the voltage drop less than 0.5 volt?
Yes GO to B5
No INSPECT and REPAIR any corrosion in the generator B+ circuit or positive battery cable connections.

B5 CHECK THE VOLTAGE IN THE VEHICLE GROUNDS
  • With the engine still running at idle, headlamps on and heater blower on high, measure:
    Positive Lead Measurement / Action Negative Lead
    Generator case

Is voltage less than 0.5V?
Yes GO to B6
No INSPECT and REPAIR the engine ground, generator ground or the battery ground for corrosion.

B6 MONITOR THE GENERATOR VOLTAGE DESIRED (GENVDSD) PID WHILE COMMANDED
  • Using a diagnostic scan tool, view the PCM GENVDSD PID .
  • Using a diagnostic scan tool active command, set the PCM PID GENVDSD to 14.5 volts.
  • With the engine still running at idle, measure battery and record:
    Positive Lead Measurement / Action Negative Lead

Is the recorded battery voltage within ±0.5 volt of the PID ?
Yes GO to B7
No GO to B11

B7 COMPARE THE SUPPLY VOLTAGE (VPWR) PID (PARAMETER IDENTIFICATION) TO BATTERY VOLTAGE
  • With the engine still running at idle, headlamps on and blower on high, measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Using a diagnostic scan tool, view the PCM PID VPWR.

Does the PID accurately display battery voltage within ±0.5 volt of the recorded battery voltage?
Yes GO to B8
No REPAIR high resistance or loose connections in the affected PCM power circuit(s).

B8 CHECK PCM VOLTAGE SUPPLY CIRCUITS
  • Ignition OFF.
  • Disconnect PCM C175B .
  • Connect a 5 amp fused jumper wire between the following:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    PCMRC (PCM Relay Control) C175B-74   Ground
  • KOEO
  • Measure and record:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    VPWR C175B-2   Ground
    VPWR C175B-16   Ground
    VPWR C175B-17   Ground

Are the voltages within 0.5 volt of the recorded battery voltage?
Yes REMOVE the fused jumper wire and INSTALL BJB , PCM power relay. GO to B9
No REPAIR the affected circuit(s).

B9 CHECK PCM GROUND FOR HIGH RESISTANCE
  • NOTE: Measure battery voltage at the battery. Turn off all accessory loads, measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Using a diagnostic scan tool, view PCM PID VPWR and record.
  • With the engine still running at idle, turn headlamps ON and blower on HIGH.
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Using a diagnostic scan tool, view PCM PID VPWR and record.

Does the PID read within ±0.5 volt of battery voltage with accessory loads on and off?
Yes GO to B10
No REPAIR the affected PCM ground circuit(s).

B10 MONITOR THE SUPPLY VOLTAGE (VPWR) PID (PARAMETER IDENTIFICATION)
  • NOTE: Measure battery voltage at the battery. With the engine still running at idle, turn off all accessory loads.
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Using a diagnostic scan tool, view PCM PID VPWR and record.
  • Momentarily accelerate the engine to (WOT)WOT and release. Repeat this step 4-5 times while continuing to monitor the PID .

Does the PID stay within 0.5 volt of the recorded battery voltage when the engine Revolutions Per Minute (RPM) are increased?
Yes The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. INSPECT and REPAIR any connector or pin issues found. If no connector or pin issues are found, PERFORM the battery drain test.
REFER to: Battery Charging (414-01 Battery, Mounting and Cables, General Procedures).
No GO to B12

B11 CHECK GENERATOR CLUTCH OPERATION
  • Ignition OFF.
  • Perform the generator clutch component test. GO to Pinpoint Test G

Is the generator clutch OK?
Yes Check all generator wiring harness for looseness, corrosion, loose or bent terminals, or loose eyelets before installing a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).
No INSTALL a new generator clutch.
REFER to: Generator Pulley (414-02 Generator and Regulator, Removal and Installation).

B12 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all PCM connectors.
  • Repair:
    • corrosion (install new connector 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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C: GENERATOR NOISE OR MECHANICAL PERFORMANCE

Normal Operation and Fault Conditions

The generator is belt-driven by the engine FEAD system. There are several sources of generator noise which include bearing noise, electrical fault noise, generator or belt pulley misalignment. A generator with certain types of diode or stator failures can also produce an audible noise.

Possible Sources

  • FEAD belt
  • Loose bolts/brackets
  • Generator/pulleys

Visual Inspection and Pre-checks

  • Inspect the FEAD belt.
  • Inspect for loose bolts/brackets.
  • Inspect the generator/pulley.
C1 CHECK FOR ACCESSORY DRIVE BELT NOISE AND LOOSE MOUNTING BRACKETS
  • Ignition OFF.
  • Check the FEAD belt and tensioner for damage and correct installation.
    REFER to: Accessory Drive (303-05 Accessory Drive - 3.5L EcoBoost (272kW/370PS), Diagnosis and Testing).

Is the accessory drive OK?
Yes GO to C2
No REPAIR as necessary.

C2 CHECK THE GENERATOR MOUNTING
  • Check the generator mounting for loose bolts or misalignment.

Is the generator mounted correctly?
Yes GO to C3
No REPAIR as necessary.

C3 CHECK THE GENERATOR FOR NOISE
  • Start the engine.
  • With the engine running, use a stethoscope or equivalent listening device to probe the generator and the accessory drive area for unusual mechanical noise.

Is the generator the noise source?
Yes GO to C4
No Diagnose the source of the engine noise.
REFER to: Engine (303-00 Engine System - General Information, Diagnosis and Testing).

C4 CHECK GENERATOR CLUTCH OPERATION
  • Ignition OFF.
  • Perform the generator clutch component test. GO to Pinpoint Test G

Is the generator clutch OK?
Yes Check all generator wiring harness for looseness, corrosion, loose or bent terminals, or loose eyelets before installing a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).
No INSTALL a new generator clutch.
REFER to: Generator Pulley (414-02 Generator and Regulator, Removal and Installation).

PINPOINT TEST D: RADIO INTERFERENCE

NOTE: If the Original Equipment Manufacturer (OEM) Audio Control Module (ACM) has been replaced with an aftermarket unit, the vehicle may not pass this test. Return the vehicle to Original Equipment Manufacturer (OEM) condition before following this pinpoint test.

NOTE: If the engine is operated at greater than 2,000 Revolutions Per Minute (RPM) momentarily, the generator self-excites. Make sure when the generator is disconnected the engine rpm stays below 2,000 Revolutions Per Minute (RPM). If it rises above 2,000 Revolutions Per Minute (RPM), turn the ignition to the OFF position and start the test over again.

NOTE: Inspect for any aftermarket accessories that have been added to the vehicle. Check the wiring for these accessories and be sure they have not been attached to the generator circuits and are positioned away from the generator wiring.

Normal Operation and Fault Conditions

The generator radio suppression equipment reduces interference transmitted through the speakers by the vehicle electrical system.

Possible Sources

  • Generator
  • In-vehicle entertainment system
  • Wiring, terminals or connectors

Visual Inspection and Pre-checks

  • Inspect the generator.
  • Inspect the in-vehicle entertainment system.
D1 VERIFY THE GENERATOR IS THE SOURCE OF THE AUDIO SYSTEM INTERFERENCE
  • Start the engine.
  • Allow the engine to idle.
  • Tune the audio system to a station where interference is present.
  • Ignition OFF.
  • Disconnect Generator C102B .
  • Start the engine.
  • Allow the engine to idle.

Is the interference present with the generator disconnected?
Yes DIAGNOSE the audio system. Refer to the appropriate section in Group 415 for the procedure.
No Check all generator wiring harness for looseness, corrosion, loose or bent terminals, or loose eyelets before installing a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).

PINPOINT TEST E: BATTERY MONITORING SENSOR FAULTS

Refer to Wiring Diagrams Cell 12 for schematic and connector information.

Normal Operation and Fault Conditions

The BCM monitors the battery state of charge using the battery monitoring sensor attached to the negative battery cable. Battery voltage is hardwired to the battery monitoring sensor and data is transferred from the battery monitoring sensor to the BCM via a LIN circuit.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B11DB:02 Battery Monitoring Module 'A': General Signal Failure This DTC sets if the BCM receives corrupted data from the battery monitoring sensor over the LIN .
BCM B11DB:08 Battery Monitoring Module 'A': Bus Signal/Message Failures This DTC sets if the BCM receives corrupted data from the battery monitoring sensor over the LIN .
BCM B11DB:09 Battery Monitoring Module 'A': Component Failures This DTC sets if the BCM detects a fault on the battery monitoring sensor LIN .
BCM B11DB:11 Battery Monitoring Module 'A': Circuit Short To Ground This DTC sets if the BCM detects low voltage on the battery monitoring sensor LIN .
BCM B11DB:9A Battery Monitoring Module 'A': Component or System Operating Conditions This DTC sets if the BCM receives corrupted data from the battery monitoring sensor over the LIN .
BCM B130C:12 Load Shed Control: Circuit Short To Battery This DTC sets in the BCM when the BCM senses a short in the battery current sensor control circuit.
BCM B130C:14 Load Shed Control: Circuit Short To Ground Or Open This DTC sets in the BCM when the BCM senses an open or ground in the battery current sensor control circuit.

Possible Sources

  • Battery monitoring sensor
  • BCM
  • Wiring, terminals or connectors

Visual Inspection and Pre-checks

  • Inspect the battery monitoring sensor.
  • Inspect the battery monitoring sensor connector.

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.

E1 CHECK ELECTRICAL CONNECTOR CONDITION
  • Disconnect BMS C1689 .
  • Check the Battery Monitoring Sensor electrical connections for security, damage and corrosion.
  • Check the battery cable connections.
  • Connect BMS C1689 .

Are all connectors clean and connected properly?
Yes GO to E2
No REPAIR any corrosion in the battery cable connections.
REPAIR any damaged, bent or pushed-out pins.

E2 RETRIEVE BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, clear all DTC 's in all modules.
  • Using a diagnostic scan tool, perform the BCM self-test.

Did the DTC return?
Yes GO to E3
No For any PCM or BCM DTC 's refer to DTC charts in this section. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

E3 CHECK THE BATTERY MONITORING SENSOR SUPPLY VOLTAGE
  • Ignition OFF.
  • Disconnect BMS C1689 .
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1689-2   Ground

Is the voltage within 0.5 volt of the recorded battery voltage?
Yes GO to E4
No REPAIR the circuit. REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

E4 CHECK THE BATTERY MONITORING SENSOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1689-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to E5

E5 CHECK THE BATTERY MONITORING SENSOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1689-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to E6
No REPAIR the circuit.

E6 CHECK THE BATTERY MONITORING SENSOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1689-1   C2280F-4

Is the resistance less than 3 ohms?
Yes INSTALL a new battery monitoring sensor.
REFER to: Battery Monitoring Sensor (414-01 Battery, Mounting and Cables, Removal and Installation).
CLEAR all Diagnostic Trouble Codes and PERFORM self-test again. If BCM DTC U1007:00 returns, GO to E7
No REPAIR the circuit.

E7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector 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 TSB s. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB s 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.

PINPOINT TEST F: LIN COMMUNICATION FAULT

Refer to Wiring Diagrams Cell 12 for schematic and connector information.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM U012D:00 Lost Communication With Generator 'A' Control Module: No Sub Type Information The charging system supplies voltage to the battery and the vehicle electrical system through the battery B+ cable. The PCM monitors the generator output through a LIN communication circuit. The PCM uses this LIN circuit to communicate the desired voltage set point to the generator internal voltage regulator. The generator also uses this to communicate the generator load and error conditions to the PCM . This communication line is shared with the grill shutters. If U0284 or U0285 or U0645 are also present, indicates the entire LIN bus is not functioning. Likely cause are water in connectors, wiring open/shorts or defective components on the LIN circuit are all possible causes.
PCM U042E:00 Invalid Data Received From Generator 'A' Control Module: No Sub Type Information Sets when the PCM receives invalid data from the generator.

Possible Sources

  • Water intrusion for LIN circuit connectors
  • Grill shutters
  • Generator
  • Wiring shorted to ground or voltage
  • Alternator B+ wiring open
  • Wiring, terminals or connectors

Visual Inspection and Pre-checks

  • Inspect the BJB for loose or corroded connections

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.

F1 CHECK THE BATTERY CONDITION
  • Check the battery condition and state of charge.
    REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Does the battery pass the condition test?
Yes GO to F2
No CHARGE or INSTALL a new battery as necessary.
REFER to: Battery (414-01 Battery, Mounting and Cables, Removal and Installation).

F2 IS DTC U012D PRESENT WITHOUT U0284 OR U0285 OR U042E OR U0645?
  • Ignition ON.
  • Enter the following diagnostic mode: Self Test – PCM .

Is DTC U012D without U0284 or U0285 or U042E or U0645 present?
Yes GO to F5
No GO to F3

F3 CHECK FOR VOLTAGE ON THE ALTERNATOR B+
  • Start the engine.
  • Increase the engine speed to 2000 rpm and then back to idle.
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead

Did battery voltage rise after engine started?
Yes GO to F5
No GO to F4

F4 CHECK THE ALTERNATOR B+ CONNECTION
  • Check for voltage at the generator C102B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C102B-1   Ground

Does C102B equal to battery voltage?
Yes GO to F5
No REPAIR the wiring circuit.

F5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) LINE FOR SHORT TO OTHER PINS
  • Ignition OFF.
  • Disconnect / inspect inline connector C1045 for signs of water intrusion, damaged pins or pushed out pins.
  • Check for resistance to all pins in the male connector. Repeat process for female of connector.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1045-11   C1045-all pins

Is the resistance less than10,000 ohms?
Yes If resistance less than10,000 ohms on female. GO to F6
If resistance less than 10,000 ohms on male. Repair the wiring or active grille shutter.
REFER to: Active Grille Shutter (501-02 Front End Body Panels, Diagnosis and Testing).
No GO to F7

F6 CHECK THE GENERATOR FOR CAUSE OF SHORT
  • Disconnect Generator C102A .
  • Repeat ohms check C1045-11 to all other pins on female.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1045-11   C1045-all other pins

Is resistance less the 10,000 ohms?
Yes REPAIR the wiring circuit.
No REPLACE the Generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).

F7 DISCONNECT GENERATOR LIN (LOCAL INTERCONNECT NETWORK) CONNECTION AND CHECK FOR RESISTANCE
  • Disconnect PCM C175B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C102A-1   C175B-49

Is the resistance less than 3 ohms?
Yes GO to F8
No REPAIR the wiring, Splice connector CS1106 or Inline connector C1045.

F8 CHECK PIN FIT FOR CONNECTORS C175B PIN 49 AND C102B-1
  • Check the PCM pin fit on the connector C175B-49 and C102B-1.

Is the pin ok.
Yes GO to F9
No REPAIR the circuit.

F9 CHECK FOR PCM ABILITY TO CONTROL THE ALTERNATOR
  • Connect all connectors back together.
  • Connect volt meter to battery.
  • Start engine
  • Using a diagnostic scan tool active command, set the PCM PID GENVDSD to 14.7 volts.

Is the battery voltage within 14.7+/-0.5 volts?
Yes GO to F10
No REPLACE the Generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).

F10 WIGGLE TEST WIRING
  • Wiggle wiring and inline connectors C102A, C1045, CS1106, C175B, C2280F, C1766, C1767.
  • Using a diagnostic scan tool active command, set the PCM PID GENVDSD to 12.0 volts.

Does the voltage change or is the DTC U012D or U042E set while wiggling the wires?
Yes Repair the wiring harness.
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. CHECK OASIS for any applicable TSB s. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.

PINPOINT TEST G: GENERATOR CLUTCH COMPONENT TEST

Normal Operation and Fault Conditions

The generator clutch allows the generator rotor to continue to rotate when the engine or FEAD system slows. The clutch should slip freely and smoothly in a clockwise direction. It should not rotate freely in the counterclockwise direction. A loose FEAD belt or a weak or binding tensioner can cause the pulley to overheat. REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) - System Operation and Component Description (414-00 Charging System - General Information, Description and Operation).

The generator is belt-driven by the engine FEAD system. There are several sources of generator noise which include bearing noise, electrical fault noise, generator or belt pulley misalignment. A generator with certain types of diode or stator failures can also produce an audible noise.

Possible Sources

  • FEAD belt
  • Loose bolts/brackets
  • Generator/pulleys

Visual Inspection and Pre-checks

  • Inspect the FEAD belt.
  • Inspect for loose bolts/brackets.
  • Inspect the generator/pulley.
G1 INSPECT THE GENERATOR CLUTCH
  • Remove the generator.
    REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).
  • Inspect the generator clutch for heat damage.

Is there evidence of heat damage?
Yes INSTALL a new generator clutch.
REFER to: Generator Pulley (414-02 Generator and Regulator, Removal and Installation).
INSPECT the FEAD system.
REFER to: Accessory Drive (303-05 Accessory Drive - 3.5L EcoBoost (272kW/370PS), Diagnosis and Testing).
No GO to G2

G2 CHECK THE GENERATOR CLUTCH FOR SMOOTH ROTATION
  • Using a small screwdriver or similar tool, insert the tool through the rubber button on the center of the pulley cap and pry off the cap. Discard the cap. A new cap must be installed.
  • Using a 17 mm hex tool bit (such as a Snap-on® SAM17E2 or equivalent) and socket wrench, insert the 17 mm hex tool bit into the end of the clutch shaft.
  • While holding the clutch pulley firmly by hand, turn the clutch shaft clockwise. The clutch shaft should rotate smoothly and freely.

Does the clutch shaft rotation feel rough or seized?
Yes INSTALL a new generator clutch.
REFER to: Generator Pulley (414-02 Generator and Regulator, Removal and Installation).
No GO to G3

G3 CHECK FOR REVERSE ROTATION RESISTANCE
  • While holding the clutch pulley firmly by hand, turn the clutch shaft counterclockwise.

Is there some resistance (a spring feel)?
Yes GO to G4
No INSTALL a new generator clutch.
REFER to: Generator Pulley (414-02 Generator and Regulator, Removal and Installation).

G4 CHECK FOR REVERSE ROTATION
  • While holding the clutch pulley firmly by hand, turn the clutch shaft counterclockwise.

Does the clutch shaft rotate freely?
Yes INSTALL a new generator clutch.
REFER to: Generator Pulley (414-02 Generator and Regulator, Removal and Installation).
No INSTALL a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).

PINPOINT TEST H: P0A3B

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P0A3B:00 Generator 'A' Over Temperature: No Sub Type Information Sets in the PCM when generator over temperature is detected.

Possible Sources

  • PCM
H1 RETRIEVE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, clear the DTC s.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, perform the PCM self-test and DIAGNOSE any cooling fan DTC s.

Is DTC P0A3B recorded?
Yes If no cooling fan DTC s are present, INSTALL a new generator.
REFER to: Generator (414-02 Generator and Regulator, Removal and Installation).
No The system is operating correctly at this time.

PINPOINT TEST I: B11DB:49

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B11DB:49 Battery Monitoring Module 'A': Internal Electronic Failure Sets in the BCM when an internal electronic failure is detected.

Possible Sources

  • BCM
I1 RETRIEVE BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, clear the DTC .
  • Wait 10 seconds.
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B11DB:49 recorded?
Yes INSTALL new battery monitoring sensor.
REFER to: Battery Monitoring Sensor (414-01 Battery, Mounting and Cables, Removal and Installation).
No The system is operating correctly at this time.

PINPOINT TEST J: B11DB:55

Normal Operation and Fault Conditions

CHECK the vehicle service history for recent service actions related to this module.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B11DB:55 Battery Monitoring Module 'A': Not Configured Sets due to incomplete or incorrect PMI procedures.

Possible Sources

  • Incomplete or incorrect PMI procedures.
J1 RETRIEVE BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform the BCM self-test.

Is DTC B11DB:55 recorded?
Yes CHECK the vehicle service history for recent service actions related to this module. This DTC sets due to incomplete or incorrect PMI procedures. INSTALL As-Built data from PTS following diagnostic scan tool instructions under Module Programming>As-Built.
No The system is operating correctly at this time.

PINPOINT TEST K: CHARGING SYSTEM WARNING INDICATOR IS NEVER OR ALWAYS ON

Normal Operation and Fault Conditions

RETRIEVE DTC from all modules. If any DTC s are found, Refer to DTC Chart in this section. If no DTC s are found, REFER to: Instrumentation, Message Center and Warning Chimes - Vehicles With: Head Up Display (HUD) (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).

Possible Sources

  • Wiring, terminals or connectors
  • IPC procedures.
  • Generator
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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