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Pinpoint Test B : U0140:01

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

  1. B1 CHECK THE COMMUNICATION NETWORK

    • Ignition ON.

    • Using a scan tool, perform a network test.

    Does the BCM pass the network test? 

    Yes  GO to  B2
    No  REFER to: Communications Network .

  2. B2 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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

    Are any voltage related Diagnostic Trouble Codes (DTCs) present? 

    Yes  REFER to: Body Control Module (BCM) .
    No  GO to  B3

  3. B3 RECHECK THE GFM2 (GENERIC FUNCTION MODULE 2) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Clear the Diagnostic Trouble Codes (DTCs).

    • Wait 10 seconds.

    • Using a scan tool, Using a scan tool, RETRIEVE the GFM2 Diagnostic Trouble Codes (DTCs).

    Is DTC U0140:01 still present? 

    Yes  GO to  B4
    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.

  4. B4 CHECK FOR CORRECT GFM2 (GENERIC FUNCTION MODULE 2) OPERATION

    • Disconnect and inspect the GFM2 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 GFM2 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, INSTALL a new GFM2. REFER to: Generic Function Module 2 (GFM2) .
    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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