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Pinpoint Test Ax: DTC U0140

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. AX1 VERIFY CUSTOMER CONCERN 
    • Ignition ON.
    • Verify there is an observable symptom present.
    • Is an observable symptom present? 
    1. Yes  : GO to AX2  .
    2. 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. AX2 CHECK THE COMMUNICATION NETWORK 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Network Test.
    • Carry out the network test.
    • Does the SJB pass the network test? 
    1. Yes  : GO to AX3  .
    2. No  : REFER to MODULE COMMUNICATIONS NETWORK -- FUSION, MILAN & MKZ article.
  3. AX3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST 
    • Check for recorded DSM DTCs from the self-test.
    • Is DTC B1317 or DTC B1318 recorded? 
    1. Yes  : For DTC B1317, GO to PINPOINT TEST AV .

      For DTC B1318, GO to PINPOINT TEST AW .

    2. No  : GO to AX4  .
  4. AX4 RECHECK THE DSM DTCs 
    NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out.
    • Clear the DTCs. Repeat the DSM self-test.
    • Is DTC U0140 still present? 
    1. Yes  : GO to AX5  .
    2. 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. AX5 CHECK FOR DTC U0140/U0140:00 SET IN OTHER MODULES 
    • Clear all DTCs.
    • Ignition OFF.
    • Ignition ON.
    • Wait 10 seconds.
    • Enter the following diagnostic mode on the scan tool: Self-Test.
    • Retrieve the continuous memory DTCs from all modules.
    • Is DTC U0140/U0140:00 set in other modules? 
    1. Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES -- FUSION, MILAN & MKZ article.
    2. No  : INSTALL a new DSM. REFER to DRIVER SEAT MODULE (DSM)  in this service information.
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