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The Analog Tachometer Is Inoperative

  1. H1 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) from the IPC  self-test.

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    1. Yes  : REFER to DTC Chart: IPC .
    2. No  : GO to H2 
  2. H2 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? 

    1. Yes  : REFER to: COMMUNICATIONS NETWORK .
    2. No  : GO to H3 
  3. H3 PERFORM THE TACHOMETER ACTIVE COMMAND USING THE SCAN TOOL 
    • Using a diagnostic scan tool, view the IPC  Parameter Identifications (PIDs).
    • Select the IPC  tachometer (TACH_IND) PID.
    • NOTE: Make sure to set the scan tool to 0 rpm before beginning this step.

      Command the tachometer in 10% increments while monitoring the tachometer.

    Does the tachometer increase approximately 800 rpm with each 10% increment? 

    1. Yes  : DIAGNOSE all PCM  Diagnostic Trouble Codes (DTCs). Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) . Refer to the appropriate Engine Mechanical article for the procedure.
    2. No  : INSTALL a new IPC  .

      REFER to: INSTRUMENT PANEL CLUSTER (IPC)  .

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