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Pinpoint Test O : U0146:00

WARNING: This page is about a different car, the 2015 Lincoln MKZ. However, it is still accessible from the selected car via links, so may be relevant.

  1. O1 VERIFY THE CUSTOMER CONCERN

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

    Is an observable symptom present? 

    Yes  GO to  O2
    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. O2 CHECK THE COMMUNICATION NETWORK

    • Using a diagnostic scan tool, perform the network test.

    Does the GWM pass the network test? 

    Yes  GO to  O3
    No  REFER to: COMMUNICATIONS NETWORK .

  3. O3 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  GO to  O4

  4. O4 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
    • Operate the system and test for normal operation.
    • Check the PAM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Is DTC U0146:00 still present? 

    Yes  GO to  O5
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  5. O5 CHECK FOR DIAGNOSTIC TROUBLE CODE (DTC) U0146:00 OR DIAGNOSTIC TROUBLE CODE (DTC) U0146:87 IN OTHER MODULES

    • Using a diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
    • Ignition OFF.
    • Ignition ON.
    • Wait 10 seconds.
    • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

    Is DTC U0146:00 or DTC U0146:87 set in any other module? 

    Yes  INSTALL a new GWM. REFER to: Gateway Module A (GWM) .
    No  GO to  O6

  6. O6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Ignition OFF.
    • Disconnect and inspect all BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the BCM connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to BCM Hardware Testing (Hybrid) .
    No  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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