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Home >> Ford >> 2021 >> Bronco First Edition, 2D Utility >> Repair and Diagnosis >> Electrical >> Gauges >> Instrumentation, Message Center And Warning Chimes (2 Of 2) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test Ac: The LH (Left-Hand) - RH (Right-Hand) Turn Signal Indicator Is Never Or Always On

Pinpoint Test Ac: The LH (Left-Hand) - RH (Right-Hand) Turn Signal Indicator Is Never Or Always On

  1. Normal Operation and Fault Conditions 

    See LH/RH Turn Signal. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

    If the left turn lamp on request or right turn lamp on request message is missing for less than 5 seconds, the IPC defaults the indicator to its last indication state (on or off), based upon the last message received.

    If the left turn lamp on request or right turn lamp on request message is missing for 5 seconds or longer, the IPC defaults the indicator off.

    Possible Sources 

    • Turn indicator concern
    • Communication concern
    • BCM
    • GWM
    • IPC

  2. AC1 DETERMINE THE FAULT CONDITION

    • Ignition ON.

    • Check the operation of the turn signals.

    Do the turn signals operate correctly? 

    Yes  GO to  AC2
    No  REFER to: Turn Signal and Hazard Lamps .

  3. AC2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the Diagnostic Trouble Code (DTC) Chart .
    No  GO to  AC3

  4. AC3 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (DTCs).

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Controller Area Network (CAN) Module Communications Network .
    No  GO to  AC4

  5. AC4 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) PID (PARAMETER IDENTIFICATION) ACTIVE COMMAND

    • Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).

    • Access the IPC and control the ALL_LAMPSPID

    • Command all lamps on and off while observing the LH and RH turn indicator.

    Does the LH or RH indicator illuminate when commanded on and turn off when commanded off? 

    Yes  DIAGNOSE all BCM Diagnostic Trouble Codes (DTCs). REFER to the Diagnostic Trouble Code (DTC) Chart .
    No  GO to  AC5

  6. AC5 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the IPC connector.

    • 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 IPC connector. Make sure it seats and latches 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 IPC. REFER to: Instrument Panel Cluster (IPC) .
    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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