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Pinpoint Test L: The Auto Stop-Start Indicator Is Never Or Always On

  1. Normal Operation and Fault Conditions 

    See Auto Stop-Start Indicator. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

    If the stop-start standby indicator request message is missing for less than 5 seconds, the IPC defaults the auto stop-start warning indicator to its last indication state (on or off), based upon the last message received.

    If the stop-start standby indicator request message is missing for 5 seconds or longer, the IPC defaults the auto stop-start indicator off.

    Possible Sources 

    • Communication concern
    • PCM concern
    • GWM concern
    • IPC

  2. L1 VERIFY THE AUTO STOP-START FEATURE IS ENABLED

    • Ignition ON.

    • NOTE: Refer to the Owner's Literature for message center menu navigation.

      Using the message center controls, verify the stop-start feature is enabled.

    Is the stop-start system enabled? 

    Yes  GO to  L2
    No  ENABLE the stop-start feature and INFORM the customer how to enable the feature.

  3. L2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL

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

    • Select the IPC all lamps (ALL_LAMP) PID.

    • Command all the indicators on then off while observing the auto stop-start indicator.

    Does the auto stop-start indicator turn on when commanded on and turn off when commanded off? 

    Yes  GO to  L3
    No  INSTALL a new IPC. Refer to Instrument Panel Cluster (IPC) 

  4. L3 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

    • Ignition ON.

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to DTC Chart: IPC .
    No  GO to  L4

  5. L4 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the appropriate Electronic Engine Controls article .
    No  GO to  L5

  6. L5 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Communications Network .
    No  DIAGNOSE the auto stop-start feature. REFER to the appropriate Starting System article .
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