Lincoln Navigator Manuals

Lincoln Navigator: Steering Wheel and Column Electrical Components / Steering Wheel and Column Electrical Components. Diagnosis and Testing

Lincoln Navigator 2018-2024 Workshop Manual / Steering System / Steering Wheel and Column Electrical Components / Steering Wheel and Column Electrical Components. 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 B108A:01 Start Button: General Electrical Failure GO to Pinpoint Test A
BCM B108A:24 Start Button: Signal Stuck High GO to Pinpoint Test A
BCM B108A:9E Start Button: Stuck On GO to Pinpoint Test A
BCM B1142:29 Ignition Status 1: Signal Invalid GO to Pinpoint Test A
BCM B1240:11 Start Button Mode Indicator: Circuit Short To Ground GO to Pinpoint Test B
BCM B1240:15 Start Button Mode Indicator: Circuit Short To Battery Or Open GO to Pinpoint Test B
BCM B1240:15 Start Button Mode Indicator: Circuit Short To Battery Or Open GO to Pinpoint Test C
BCM B1310:12 Run/Start Control: Circuit Short To Battery GO to Pinpoint Test A
BCM B1310:14 Run/Start Control: Circuit Short To Ground Or Open GO to Pinpoint Test A
PCM P2534:00 Ignition Switch On/Start Position Circuit Low: 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 A
SCCM B112B:04 Steering Wheel Module: System Internal Failures GO to Pinpoint Test D
SCCM B112B:44 Steering Wheel Module: Data Memory Failure GO to Pinpoint Test D
SCCM B112B:45 Steering Wheel Module: Program Memory Failure GO to Pinpoint Test D
SCCM B112B:46 Steering Wheel Module: Calibration/Parameter Memory Failure GO to Pinpoint Test D
SCCM B112B:49 Steering Wheel Module: Internal Electronic Failure GO to Pinpoint Test D
SCCM B135C:11 Heater Element: Circuit Short To Ground GO to Pinpoint Test G
SCCM B135C:13 Heater Element: Circuit Open GO to Pinpoint Test G
SCCM U0126:87 Lost Communication With Steering Angle Sensor Module: Missing Message GO to Pinpoint Test D
SCCM U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test H
SCCM U0146:00 Lost Communication With Serial Data Gateway 'A': No Sub Type Information GO to Pinpoint Test H
SCCM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information GO to Pinpoint Test H
SCCM U023A:00 Lost Communication With Image Processing Module A: No Sub Type Information GO to Pinpoint Test H
SCCM U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information GO to Pinpoint Test H
SCCM U053B:00 Invalid Data Received From Image Processing Module A: No Sub Type Information GO to Pinpoint Test H
SCCM U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test I
SCCM U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO to Pinpoint Test I
SCCM U210A:11 Temperature Sensor: Circuit Short To Ground GO to Pinpoint Test G
SCCM U210A:13 Temperature Sensor: Circuit Open GO to Pinpoint Test G
SCCM U210A:29 Temperature Sensor: Signal Invalid GO to Pinpoint Test G
SCCM U2200:00 Control Module Configuration Memory Corrupt: No Sub Type Information GO to Pinpoint Test D
SCCM U3003:A2 Battery Voltage: System Voltage Low GO to Pinpoint Test E
SCCM U3003:A3 Battery Voltage: System Voltage High 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.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


Symptom Action

Symptom Charts

Symptom Chart: Ignition Switch - Push Button

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 Actions
No power in ON
  • GO to Pinpoint Test A
The ignition mode indicator is inoperative
  • GO to Pinpoint Test B
The ignition mode indicator is always on
  • GO to Pinpoint Test C

Symptom Chart: Heated Steering Wheel

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 Actions
The heated steering wheel is inoperative or does not operate correctly
  • GO to Pinpoint Test G

Pinpoint Tests


PINPOINT TEST A: NO POWER IN ON - PUSH BUTTON IGNITION SWITCH

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P2534:00 Ignition Switch On/Start Position Circuit Low: No Sub Type Information This DTC sets when the PCM or BCM detects low voltage on the crank detect circuit while the engine is running.
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.
BCM B108A:01 Start Button: General Electrical Failure Sets continuous when the BCM detects a mismatch between the switch input circuits, one indicates closed and one indicates open.
BCM B108A:24 Start Button: Signal Stuck High Sets continuous when the BCM detects a fault on one of the ignition switch input circuits for 10 seconds or longer.
BCM B108A:9E Start Button: Stuck On Sets continuous when the BCM detects only one switch input circuit indicating open when the start button is released.
BCM B1142:29 Ignition Status 1: Signal Invalid Sets during the on-demand self-test when the BCM detects a fault from one of the ignition switch input circuits.
BCM B1310:12 Run/Start Control: Circuit Short To Battery Sets when the BCM detects a short to voltage from the BCMC run/start relay control circuit. When set, the control side of the run/start relay is disabled via the Field Effect Transistor (FET). Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.
BCM B1310:14 Run/Start Control: Circuit Short To Ground Or Open The BCM continuously monitors the BCMC RUN/START relay control circuit. This DTC is set if the BCM detects an open or a short to ground on the BCMC RUN/START relay control circuit. When this DTC sets, the BCM disables the control side of the RUN/START relay FET. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.

Possible Sources

  • Battery voltage concern
  • Fuse
  • Wiring, terminals or connectors
  • PATS concern
  • Push button ignition switch
  • BCM
  • PCM

Visual Inspection and Pre-checks

  • Inspect the battery and battery cables.
  • Inspect the BCM fuse 20 (5A)

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

A1 CHECK THE VEHICLE BATTERY
  • Carry out the Battery Condition Test.
    REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK?
Yes GO to A2
No CORRECT the battery condition.

A2 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) P2534:00 OR P2535:00
  • Using a diagnostic scan tool, carry out the PCM AND the BCM self-tests.

Is PCM DTC P2534:00 or P2535:00 the only DTC present?
Yes GO to A3
No If BCM DTC B108A:01, B108A:24, B108A:9E or B1142:29 is present, GO to A6 , Otherwise, GO to A4

A3 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the PCM and BCM Parameter Identification (PIDs).
  • Monitor the PCM and BCM PID START_STOP_1 while pressing and releasing the START/STOP button.

Do both the PCM and BCM PID change state when the START/STOP button is pressed and released?
Yes VERIFY BCM fuse 20 (5A) is OK. If OK, GO to A4
If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
No For DTC P2534:00 GO to A27For DTC P2535GO to A28

A4 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1310:12 OR B1310:14
  • Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC B1310:12 or B1310:14 present?
Yes GO to A21
No GO to A5

A5 CHECK FOR IGNITION ON MODE
  • Press and release the START/STOP button while monitoring the ignition mode indicator at the top of the button.

Does the ignition mode indicator flash on and off continuously?
Yes GO to A21
No GO to A6

A6 CHECK FOR A PATS (PASSIVE ANTI-THEFT SYSTEM) CONCERN
  • Press the START/STOP button while monitoring the message center.

Does No key detected display in the message center?
Yes
REFER to: Perimeter Anti-Theft Alarm (419-01A Perimeter Anti-Theft Alarm, Diagnosis and Testing).
No GO to A7

A7 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
  • Monitor the BCM PID START_STOP_1 while pressing and releasing the START/STOP button.

Does the PID change state when the START/STOP button is pressed and released?
Yes GO to A15
No VERIFY BCM fuse 20 (5A) is OK. If OK, GO to A8
If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

A8 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect BCM C2280A .
  • Disconnect BCM C2280B .
  • Disconnect Push Button Ignition Switch C2195 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to A9

A9 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO THE START/STOP 2 INPUT CIRCUIT
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-1   C2280B-6

Is the resistance greater than 10,000 ohms?
Yes GO to A10
No REPAIR the circuit.

A10 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A11
No REPAIR the circuit.

A11 BYPASS THE PUSH BUTTON IGNITION SWITCH WHILE MONITORING THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)
  • Connect BCM C2280A .
  • Connect BCM C2280B .
  • Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
  • Monitor the BCM PID START_STOP_1.
  • Connect:
    Click to display connectors
    Lead 1 Measurement / Action Lead 2
      C2195-1   C2195-4
  • Remove the fused jumper wire.

Does the PID indicate the START/STOP button is pressed with the fused jumper wire connected?
Yes INSTALL a new push button ignition switch.
No GO to A12

A12 CHECK FOR VOLTAGE TO THE IGNITION SWITCH
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-4   Ground

Is the voltage greater than 11 volts?
Yes GO to A14
No GO to A13

A13 CHECK THE IGNITION SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Disconnect BCM C2280A .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-4   C2280A-12

Is the resistance less than 3 ohms?
Yes GO to A32
No REPAIR the circuit.

A14 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 1 INPUT CIRCUIT FOR AN OPEN
  • Disconnect BCM C2280A .
  • Disconnect BCM C2280B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-1   C2280A-14
      C2195-1   C2280B-51

Is the resistance less than 3 ohms?
Yes GO to A32
No REPAIR the circuit.

A15 CHECK THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)
  • Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
  • Monitor the BCM PID START_STOP_2 while pressing and releasing the START/STOP button.

Does the PID change state when the START/STOP button is pressed and released?
Yes GO to A32
No GO to A16

A16 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-6   Ground

Is there any voltage present?
Yes REPAIR the circuit.
No GO to A17

A17 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR A SHORT TO GROUND
  • Disconnect BCM C2280B .
  • Disconnect Push Button Ignition Switch C2195 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-6   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A18
No REPAIR the circuit.

A18 BYPASS THE PUSH BUTTON IGNITION SWITCH WHILE MONITORING THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)
  • Connect BCM C2280B .
  • Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).
  • Monitor the BCM PID START_STOP_2.
  • Connect:
    Click to display connectors
    Lead 1 Measurement / Action Lead 2
      C2195-6   Ground
  • Remove the fused jumper wire.

Does the PID indicate the START/STOP button is pressed with the fused jumper wire connected?
Yes GO to A19
No GO to A20

A19 CHECK THE IGNITION SWITCH GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-4   C2195-3

Is the voltage greater than 11 volts?
Yes INSTALL a new push button ignition switch.
No REPAIR the circuit.

A20 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR AN OPEN
  • Disconnect BCM C2280B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-6   C2280B-5

Is the resistance less than 3 ohms?
Yes GO to A32
No REPAIR the circuit.

A21 CARRY OUT A NETWORK TEST
  • Using a diagnostic scan tool, carry out the network test.

Does the IPC and the BCM pass the network test?
Yes VERIFY the BCM fuse 20 (5A) is OK. If OK, GO to A22
If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short.
No

A22 CHECK FOR AN INTERMITTENT COMMUNICATION CONCERN
  • Using a diagnostic scan tool, retrieve the Continuous Mode Diagnostic Trouble Codes (CMDTCs) from all modules.

Are multiple communication Diagnostic Trouble Codes (DTCs) set in multiple modules?
Yes DIAGNOSE an intermittent network concern.
No If DTC B1310:12 is present, GO to A26Otherwise, GO to A23

A23 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect negative battery cable.
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-25   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A32
No GO to A24

A24 ISOLATE THE RUN/START RELAY CONTROL CIRCUIT SHORT TO GROUND
  • Disconnect BCMC C1035C .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-25   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new BCMC . Refer to the appropriate section in Group 419 for the procedure.
No REPAIR the circuit.

A25 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR AN OPEN
  • Disconnect BCMC C1035C .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-25   C1035C-25

Is the resistance less than 3 ohms?
Yes GO to A32
No REPAIR the circuit.

A26 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect BCM C2280F .
  • Disconnect BCMC C1035C .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280F-25   Ground

Is any voltage present?
Yes REPAIR the circuit.
No INSTALL a new BCMC Refer to the appropriate section in Group 419 for the procedure.

A27 CHECK THE CRANK DETECT CIRCUIT FOR AN OPEN WITH BCM (BODY CONTROL MODULE) DISCONNECTED
  • Ignition OFF.
  • Disconnect BCM C2280G .
  • Disconnect PCM C175B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-43   C2280G-1

Is the resistance less than 3 ohms?
Yes GO to A31
No REPAIR the circuit.

A28 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH PCM (POWERTRAIN CONTROL MODULE) DISCONNECTED
  • Ignition OFF.
  • Disconnect PCM C175B .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-43   Ground

Is any voltage present?
Yes GO to A29
No GO to A31

A29 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH IGNITION SWITCH - PUSH BUTTON START DISCONNECTED
  • Ignition OFF.
  • Disconnect Ignition switch - Push Button Start C2195 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-43   Ground

Is any voltage present?
Yes GO to A30
No INSTALL a new ignition switch.

A30 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH BCM (BODY CONTROL MODULE) DISCONNECTED
  • Ignition OFF.
  • Disconnect BCM C2280G .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C175B-43   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to A5

A31 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
  • 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 all 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 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,
   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.

A32 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • 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 all 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 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 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 B: THE IGNITION MODE INDICATOR IS INOPERATIVE

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

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B1240:11 Start Button Mode Indicator: Circuit Short To Ground Sets when the BCM detects a short to ground from the ignition mode status indicator circuit.
BCM B1240:15 Start Button Mode Indicator: Circuit Short To Battery Or Open Sets when the BCM detects an open from the ignition mode status indicator circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Push button ignition switch
  • BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

B1 CHECK FOR VOLTAGE TO THE IGNITION MODE INDICATOR
  • Start the engine.
  • Disconnect Push Button Ignition Switch C2195 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-2   Ground

Is the voltage greater than 11 volts?
Yes GO to B4
No GO to B2

B2 CHECK THE IGNITION MODE INDICATOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B3
No REPAIR the circuit.

B3 CHECK THE IGNITION MODE INDICATOR VOLTAGE CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-2   C2280B-39

Is the resistance less than 3 ohms?
Yes GO to B5
No REPAIR the circuit.

B4 CHECK THE IGNITION MODE INDICATOR GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-2   C2195-3

Is the voltage greater than 11 volts?
Yes INSTALL a new push button ignition switch.
No REPAIR the circuit.

B5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • 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 and all other previously disconnected 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 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 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 C: THE IGNITION MODE INDICATOR IS ALWAYS ON

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

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B1240:15 Start Button Mode Indicator: Circuit Short To Battery Or Open Sets when the BCM detects a short to voltage from the ignition mode status indicator circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Push button ignition switch
  • BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

C1 ISOLATE THE BCM (BODY CONTROL MODULE)
  • Ignition ON.
  • Disconnect BCM C2280B .
  • Observe the ignition mode indicator.

Does the ignition mode indicator continue to illuminate?
Yes GO to C2
No GO to C3

C2 CHECK THE IGNITION MODE INDICATOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect Push Button Ignition Switch C2195 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2195-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No INSTALL a new ignition switch.

C3 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 and all other previously disconnected 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 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 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 D: DTCS B112B:04, B112B:44, B112B:45, B112B:46, B112B:49, U0126:87 OR U2200:00

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM B112B:04 Steering Wheel Module: System Internal Failures This DTC sets when there is an Internal Fault in the SCCM .
SCCM B112B:44 Steering Wheel Module: Data Memory Failure This DTC sets when there is an fault in the Data Memory section of the SCCM .
SCCM B112B:45 Steering Wheel Module: Program Memory Failure This DTC sets when there is an fault in the Program Memory section of the SCCM .
SCCM B112B:46 Steering Wheel Module: Calibration/Parameter Memory Failure This DTC sets when there is a Calibration or Parameter Memory failure in the SCCM .
SCCM B112B:49 Steering Wheel Module: Internal Electronic Failure This DTC sets when there is an Internal Electronic Failure in the SCCM .
SCCM U0126:87 Lost Communication With Steering Angle Sensor Module: Missing Message This DTC sets when there is a missing message from the SASM to the SCCM .
SCCM U2200:00 Control Module Configuration Memory Corrupt: No Sub Type Information This DTC sets when there is an fault in the Data Memory section of the SCCM .

Possible Sources

  • SCCM
D1 CHECK FOR DTCS B112B:04, B112B:44, B112B:45, B112B:46, B112B:49, U0126:87 OR U2200:00
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the SCCM self test.

Are DTCs B112B:04, B112B:44, B112B:45, B112B:46, B112B:49, U0126:87 or U2200:00 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 SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
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 E: U3003:A2

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The SCCM continuously monitors input voltage for correct operation. If voltage outside of defined limits is detected by the SCCM , the applicable DTC sets. DTC U3003:A2 can set if the vehicle battery has been discharged. The vehicle battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the vehicle has been left unattended with the accessories on.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM U3003:A2 Battery Voltage: System Voltage Low Sets in continuous memory if the SCCM detects battery voltage below 8 volts on the battery voltage supply circuit.

Possible Sources

  • Battery
  • Wiring, terminals or connectors
  • Fuse
  • Charging system
  • SCCM

Visual Inspection and Pre-checks

  • Make sure the vehicle battery terminals and cables are free of any corrosion and other contaminates.
  • Make sure the vehicle battery terminals are tightened to their correct torque specifications.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

E1 CHECK FOR SCCM (STEERING COLUMN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the SCCM self-test.
  • Using a diagnostic scan tool, clear the SCCM Diagnostic Trouble Codes (DTCs).
  • Using a diagnostic scan tool, carry out the SCCM self-test.

Is DTC U3003:A2 still present?
Yes GO to E2
No The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

E2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) IN THE PCM (POWERTRAIN CONTROL MODULE)
  • Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM ?
Yes DIAGNOSE the charging system Diagnostic Trouble Codes (DTCs).
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).
No GO to E3

E3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
  • Ignition OFF.
  • Carry out the Battery Condition Test.
    REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK?
Yes GO to E4
No CHARGE the battery and REPEAT the battery condition test. If the battery does not pass the battery condition test, INSTALL a new battery.
REFER to: Battery (414-01 Battery, Mounting and Cables, Removal and Installation).

E4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE
  • Measure and record the battery voltage.
  • Disconnect SCCM C226A .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C226A-2   Ground

Is the voltage within 0.2 volt of the recorded battery voltage?
Yes GO to E5
No REPAIR the circuit.

E5 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR HIGH RESISTANCE
  • Disconnect the negative battery cable.
    REFER to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C226A-8   Ground

Is the resistance less than 3 ohms?
Yes CONNECT the battery negative cable.
REFER to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
GO to E6
No REPAIR the circuit. CONNECT the battery negative cable.

E6 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect the SCCM 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 SCCM connectors and all other previously disconnected 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 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 SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, 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: U3003:A3

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The SCCM continuously monitors input voltage for correct operation. If voltage outside of defined limits is detected by the SCCM , the applicable DTC sets. DTC U3003:A3 can set if the vehicle has been recently jump started or the vehicle battery has been recently charged. REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM U3003:A3 Battery Voltage: System Voltage High Sets in continuous memory if the SCCM detects battery voltage above 19 volts on the battery voltage supply circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Charging system
  • SCCM
F1 CHECK FOR HIGH BATTERY VOLTAGE AND/OR CHARGING SYSTEM DTC (DIAGNOSTIC TROUBLE CODE) IN THE PCM (POWERTRAIN CONTROL MODULE)
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any voltage and/or charging system Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE the charging system Diagnostic Trouble Codes (DTCs).
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).
No GO to F2

F2 CHECK THE BATTERY VOLTAGE
  • Turn off all interior/exterior lights and accessories.
  • Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 16.5 volts or higher?
Yes DIAGNOSE the charging system.
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).
No GO to F3

F3 RECHECK FOR SCCM (STEERING COLUMN CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B11D9:17
  • Using a diagnostic scan tool, carry out the SCCM self-test.
  • Using a diagnostic scan tool, clear the SCCM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC U3003:A3 still present?
Yes GO to F4
No The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

F4 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCCM 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 SCCM connectors and all other previously disconnected 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 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 SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, 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 G: THE HEATED STEERING WHEEL IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 128 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

NOTE: On all vehicles, slow heating between the 10 o'clock and 2 o'clock steering wheel hand positions is considered normal.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM B135C:11 Heater Element: Circuit Short To Ground This DTC sets when the heated steering wheel is commanded on and the SCCM senses current greater than 10 amps on the steering wheel heating element output circuit for greater than 150 ms, indicating a short to ground. This DTC also sets when the steering wheel heating element output Field Effect Transistor (FET) in the SCCM has a thermal failure. When this fault sets, the steering wheel heating element output is disabled until the ignition is cycled.
SCCM B135C:13 Heater Element: Circuit Open This DTC sets when the heated steering wheel is commanded on and the SCCM senses current less than 1 amp on the steering wheel heating element output circuit for more than 1 second. This indicates an open circuit. When this fault sets, the steering wheel heating element output is disabled until the heated steering wheel is commanded ON while the engine is running. If the condition that caused the fault to set is still present, the SCCM will switch the steering wheel heating element output off within 1 second.
SCCM U210A:11 Temperature Sensor: Circuit Short To Ground This DTC only sets when the heated steering wheel is commanded on and the SCCM detects less than 0.794 volts on the temperature sensor input circuit for greater than 1 second, indicating a short to ground. When this fault occurs, the steering wheel heating element output is disabled until the ignition is cycled.
SCCM U210A:13 Temperature Sensor: Circuit Open This DTC sets when the heated steering wheel is commanded on and the SCCM detects voltage greater than or equal to 4.986 volts on the temperature sensor reference circuit for more than 1 second. indicating an open circuit or an open temperature sensor. However, extreme cold temperatures below - 58 °F (- 50 °C) can also cause this DTC to set. When this fault occurs, the steering wheel heating element output is disabled until the ignition is cycled.
SCCM U210A:29 Temperature Sensor: Signal Invalid Sets when the heated steering wheel is commanded on and the SCCM reads a resistance value greater than 670,000 ohms on the heating element temperature sensor reference circuit for greater than 10 minutes. This indicates a short to voltage, an open circuit or an open heating element temperature sensor. When this fault occurs, the steering wheel heating element output is disabled until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Clockspring
  • Heated steering wheel
  • HVAC module
  • SCCM

Visual Inspection and Pre-checks

  • BCM fuse 13 (7.5A) and 37 (20A).
  • Check battery condition and state of charge.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

G1 CHECK FOR COMMUNICATION TO THE SCCM
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the network test.

Does the SCCM pass the network test?
Yes GO to G2
No

G2 CHECK FOR SYSTEM VOLTAGE DTCS
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the PCM self-test.

Are any charging system DTCs present?
Yes ADDRESS the root cause of any low or high system voltage conditions prior to diagnosing any heated steering wheel concerns.
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).
No GO to G3

G3 CHECK THE SCCM VOLTAGE FEED CIRCUIT
  • Disconnect: SCCM C226A
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C226A-2   Ground

Is the voltage above 11 volts?
Yes GO to G4
No VERIFY BCM fuse 13 (7.5A) is OK. If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short. If OK, REPAIR the circuit.

G4 CHECK THE SCCM GROUND CIRCUIT
  • Ignition OFF.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C226A-8   Ground

Is the resistance less than 3 ohms?
Yes GO to G5
No REPAIR the circuit.

G5 CHECK THE RESISTANCE OF THE HEATED STEERING WHEEL HEATER ELEMENT
  • Remove the driver airbag.
    REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  • Disconnect: Clockspring C218E
  • On the steering wheel side, measure and record:
    Positive Lead Measurement / Action Negative Lead
      C218E-1   C218E-3

Is the resistance between 1.6 and 3.1 ohms?
Yes GO to G6
No INSTALL a new heated steering wheel.
REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).

G6 CHECK THE HEATER ELEMENT TEMPERATURE SENSOR AND CIRCUIT RESISTANCE
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
      C218E-2   C218E-4
  • Compare the recorded measurement value with the table shown.
    Ambient Temperature Resistance
    0-10°C (32-50°F) 18,298-26,817 ohms
    10-20°C (50-68°F) 12,250-17,699 ohms
    20-25°C (68-77°F) 10,100-11,948 ohms
    25-30°C (77-86°F) 8,411-9,900 ohms
    30-35°C (86-95°F) 7,035-8,205 ohms
    35-40°C (95-104°F) 5,912-6,837 ohms
    40-50°C (104-122°F) 4,232-5,725 ohms

Is the resistance within the specified value for the current temperature of the steering wheel?
Yes GO to G7
No INSTALL a new heated steering wheel.
REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).

G7 CHECK THE HEATER ELEMENT TEMPERATURE SENSOR FOR A SHORT TO GROUND
  • Measure and record:
    Positive Lead Measurement / Action Negative Lead
      C218E-2   Ground
      C218E-4   Ground

Is the resistance less than 3 ohms?
Yes REPAIR the circuit.
No GO to G8

G8 CHECK THE SCCM HEATED STEERING WHEEL SUPPLIED VOLTAGE CIRCUIT
  • Disconnect: SCCM C226B.
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C226B-2   Ground

Is the voltage greater than 11 volts?
Yes GO to G9
No VERIFY BCM fuse F37 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short.

G9 CHECK THE SCCM HEATED STEERING WHEEL GROUND CIRCUIT
  • Ignition OFF.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C226B-1   Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new clockspring.
REFER to: Clockspring (501-20B Supplemental Restraint System, Removal and Installation).
, If concern is still present, GO to G10
No REPAIR the circuit.

G10 CHECK FOR CORRECT SCCM OPERATION
  • Disconnect and inspect all SCCM 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 SCCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

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 SCCM
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, 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 H: NETWORK COMMUNICATION CONCERNS U0140:00, U0146:00, U0155:00, 0422:00, U053B:00 OR U023A:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM U0140:00 Lost Communication With Body Control Module: No Sub Type Information NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the BCM
SCCM U0146:00 Lost Communication With Serial Data Gateway 'A': No Sub Type Information NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the GWM
SCCM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the IPC
SCCM U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the IPC
SCCM U053B:00 Invalid Data Received From Image Processing Module A: No Sub Type Information NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the IPC
SCCM U023A:00 Lost Communication With Image Processing Module A: No Sub Type Information NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the IPMA

Possible Sources

  • Network communication concern
  • SCCM concern
  • BCM
  • GWM
  • IPC
  • IPMA
H1 U0140:00, U0146:00, U0155:00, U0422:00, U053B:00 OR U023A:00
  • Ignition OFF.
  • Using a diagnostic scan tool, carry out the Network Test.

Does the BCM , GWM , IPMA , IPC or the SCCM pass the Network Test?
Yes GO to H2
No DIAGNOSE the
BCM , GWM , IPC , IPMA or SCCM does not respond to the diagnostic scan tool.

H2 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the SCCM self-test.
  • Clear the Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the SCCM self-test.
  • Record the SCCM Diagnostic Trouble Codes (DTCs).

Are DTC U0140:00, U0146:00, U0155:00, U0422:00, U053B:00 or U023A:00 retrieved again?
Yes GO to H3
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

H3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE SCCM (STEERING COLUMN CONTROL MODULE) SELF-TEST
  • Check the recorded Diagnostic Trouble Codes (DTCs) from the SCCM self-test.

Are any non network DTCs present in the SCCM ?
Yes DIAGNOSE all non network Diagnostic Trouble Codes (DTCs) first. REFER to the appropriate DTC chart in this section.
No GO to H4

H4 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE GWM (GATEWAY MODULE A)
  • Using a diagnostic scan tool, carry out the GWM self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the GWM ?
Yes DIAGNOSE the GWM Diagnostic Trouble Codes (DTCs).
No For U0140:00 or U0422:00 GO to H5
For U0146:00 GO to H6
For U0155:00 GO to H7
For U023A:00 or U053B:00 GO to H8

H5 U0140:00 OR U0422:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE BCM (BODY CONTROL MODULE)
  • Using a diagnostic scan tool, carry out the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the BCM ?
Yes DIAGNOSE the BCM Diagnostic Trouble Codes (DTCs).
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
No GO to H9

H6 U0146:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE GWM (GATEWAY MODULE A)
  • Using a diagnostic scan tool, carry out the GWM self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the GWM ?
Yes DIAGNOSE the GWM Diagnostic Trouble Codes (DTCs).
No GO to H9

H7 U0155:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE IPC (INSTRUMENT PANEL CLUSTER)
  • Using a diagnostic scan tool, carry out the IPC self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the IPC ?
Yes DIAGNOSE the IPC Diagnostic Trouble Codes (DTCs).
REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
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).
No GO to H9

H8 U023A:00 OR U053B:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE IPMA (IMAGE PROCESSING MODULE A)
  • Using a diagnostic scan tool, carry out the IPMA self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the IPMA ?
Yes DIAGNOSE the IPMA Diagnostic Trouble Codes (DTCs).
REFER to: Lane Keeping System (419-07 Lane Keeping System, Diagnosis and Testing).
No GO to H9

H9 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

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

  • Check the vehicle service history for recent service actions related to the BCM , GWM , IPC , IPMA or SCCM . If recent service history is found:
    • verify the correct replacement module was installed.
      • HVBOM may be used to verify correct part fitment.
    • verify the configuration of replacement module was correct.
      • re-configure the module using as-built data if prior configuration is suspect.
    • verify the module was not obtained from a like vehicle and installed into customer vehicle.
      • return the swapped module to source vehicle and obtain new replacement module.
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to H10
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

H10 CHECK FOR CORRECT SUSPECT MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all suspect module 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 Suspect Module connectors and all other previously disconnected 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 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 Suspect Module.
For U0140:00 or U0422:00 INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation). For U0146:00 INSTALL a new GWM .
For U0155:00 INSTALL a new IPC .
REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, Removal and Installation). For U023A:00 or U053B:00 INSTALL a new IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 I: U2100:00, U2101:00

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC sets when the SCCM has been improperly programmed.
SCCM U2101:00 Control Module Configuration Incompatible: No Sub Type Information This DTC sets if the steering wheel switches do not match the switch function configuration data in the SCCM .

Possible Sources

  • Improper or incomplete programming
I1 U2100:00, U2101:00
  • Ignition ON.
  • Using a diagnostic scan tool, CLEAR the SCCM CMDTC
  • WAIT 10 seconds
  • CHECK for SCCM CMDTC

Does the U2100:00, U2101:00 return?
Yes CHECK the parts catalog and CONFIRM that the correct SCCM and steering wheel control switches are installed in the vehicle. If ok, CONFIGURE the SCCM using a diagnostic scan tool.
REFER to: Module Programming (418-01A Module Configuration, General Procedures).
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.


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