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Pinpoint Test K: The Analog Temperature Gauge Is Inoperative

  1. Normal Operation and Fault Conditions 

    See Temperature Gauge. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

    If the IPC does not receive the engine coolant temperature data message or if the engine coolant temperature data message is deemed invalid from the PCM for more than 5 seconds, the IPC defaults the temperature gauge to cold (C).

    Possible Sources 

    • Communication concern
    • PCM
    • GWM
    • IPC

  2. K1 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

    • Check for recorded Diagnostic Trouble Codes (DTCs).

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the IPC DTC Chart.
    No  GO to  K2

  3. K2 PERFORM THE TEMPERATURE GAUGE ACTIVE COMMAND

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

    • Access the IPC and control the ENGCOOLNT (%) PID

    • NOTE: Make sure to set the scan tool to 0 or full cold before beginning this step.

      Command the temperature gauge on and off while monitoring the temperature gauge.

    Does the temperature gauge start at cold (C), move to full hot (H) and return to cold (C)? 

    Yes  GO to  K3
    No  GO to  K4

  4. K3 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: Communications Network
    No  DIAGNOSE all PCM Diagnostic Trouble Codes (DTCs). REFER to the appropriate Electronic Engine Controls article.

  5. K4 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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