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Pinpoint Test Ac : DTC U0155:00

  1. AC1 VERIFY THE CUSTOMER CONCERN

    • Ignition ON.
    • Verify there is an observable symptom present.

    Is an observable symptom present? 

    Yes  GO to  AC2.
    No  The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  2. AC2 CHECK FOR LOST COMMUNICATION DTCs

    • Ignition ON.
    • Using a diagnostic scan tool, clear all CMDTCs.
    • Ignition OFF.
    • Wait at least 10 seconds.
    • Ignition ON.
    • Using a diagnostic scan tool, retrieve all CMDTCs.

    Is DTC U0155:00 set in any audio system module? 

    Yes  GO to  AC3.
    No  The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  3. AC3 CHECK THE IPC FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

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

    Are any low or high voltage DTCs recorded in the IPC ? 

    Yes  For DTC U3003:16, Refer to article 'Instrumentation, Message Center, and Warning Chimes', Go to Pinpoint Test BD . For DTC U3003:17, Refer to article 'Instrumentation, Message Center, and Warning Chimes', Go to Pinpoint Test BE .
    No  GO to  AC4.

  4. AC4 CHECK THE AUDIO SYSTEM MODULES FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

    • Using a diagnostic scan tool, perform the self-test for the following modules:
      • ACM
      • APIM
      • FCIM
      • GPSM

    Are any low or high voltage DTCs recorded in any module? 

    Yes  For DTC U3003:16, GO to Pinpoint Test AH . For DTC U3003:17, GO to Pinpoint Test AI .
    No  GO to  AC5.

  5. AC5 CHECK FOR DTC U0155:00 SET IN MULTIPLE MODULES

    • Review the recorded results from the self-test.

    Is DTC U0155:00 set in more than one module? 

    Yes  GO to  AC6.
    No  Refer to Information and Entertainment System - Premium Plus , Symptom Chart: General Audio System to diagnose the observed symptom.

  6. AC6 CHECK FOR CORRECT IPC OPERATION

    • Ignition OFF.
    • Disconnect and inspect the IPC connector.
    • Repair:
      • Corrosion (clean module pins or install new connectors or terminals)
      • Damaged or bent pins (install new terminals or 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs Refer to IPC Hardware Testing .
    REFER to Instrumentation, Message Center, and Warning Chimes .
    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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