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Home >> Audi >> 2018 >> A6 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 264 (Information Center - Instrumentation, Message Center, And Warning Chimes) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test Y : The Mil Is Never Or Always On >> Pinpoint Test Y : The Mil Is Never Or Always On

Pinpoint Test Y : The Mil Is Never Or Always On

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

  1. Y1 PERFORM THE PCM KOEO SELF-TEST

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

    Are any DTCs recorded? 

    Yes  REFER to Electronic Engine Controls .
    No  GO to  Y2.

  2. Y2 PERFORM THE IPC SELF-TEST

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

    Are any DTCs recorded? 

    Yes  REFER to DTC Chart: IPC .
    No  GO to  Y3.

  3. Y3 PERFORM THE IPC MIL ACTIVE COMMAND USING THE DIAGNOSTIC SCAN TOOL

    • Using a diagnostic scan tool, view the IPC PIDs.
    • Select the IPC MIL PID (MIL).
    • Command the MIL on and off while observing the MIL.

    Does the MIL illuminate when selected on and turn off when selected off? 

    Yes  If the MIL is never on, the system is operating correctly at this time.If the MIL is always on, INSTALL a new PCM. REFER to Electronic Engine Controls .
    No  Refer to IPC Hardware Testing .
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