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Pinpoint Test A: The IPC (Instrument Panel Cluster) Is Inoperative

  1. Normal Operation and Fault Conditions 

    The IPC receives a hot at all times voltage from BCM fuse 22 (7.5A). The IPC receives the ignition status message from the BCM through the GWM.

    Possible Sources 

    • Fuse
    • Communication concern
    • GWM
    • IPC

    Visual Inspection and Pre-checks 

    • Inspect the BCM fuse 22 (7.5A).

  2. A1 VERIFY THE IPC (INSTRUMENT PANEL CLUSTER) PASSES THE NETWORK TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform a network test.

    • Verify whether the IPC passed the network test.

    Did the IPC pass the network test? 

    Yes  GO to  A2
    No  REFER to: Communications Network .

  3. A2 CARRY OUT THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

    • Check for recorded Diagnostic Trouble Codes (DTCs) from the IPC self-test.

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to DTC Chart: IPC  .
    No  GO to  A4

  4. A3 CARRY OUT THE GWM (GATEWAY MODULE A) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Communications Network .
    No  GO to  A4

  5. A4 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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