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Pinpoint Test H : The Odometer Is Inoperative

  1. Normal Operation and Fault Conditions 

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

    If the odometer count message is missing from the PCM through the GWM for 5 seconds or longer, the IPC defaults the odometer display to all dashes (------).

    If the odometer count message is deemed invalid by the IPC, the IPC defaults the odometer display to all dashes (------). If the NVM becomes corrupted or if any NVM failure occurs, odometer displays ERROR.

    Possible Sources 

    • Communication concern
    • GWM
    • PCM
    • IPC

  2. H1 CHECK FOR CORRUPTED NON-VOLATILE MEMORY (NVM)

    • Ignition ON.

    • Observe the message center display area.

    Does the odometer display ERROR? 

    Yes  Refer to IPC Guided Routine Testing .
    No  GO to  H2

  3. H2 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 DTC Chart: IPC .
    No  GO to  H3

  4. H3 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.
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