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DTC U15A4 VIN information lost: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line. 
    CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
    1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT THE SCAN TOOL  ."
    2. Turn the ignition switch to the "ON" position.
    3. Diagnose the CAN bus line.
    4. Turn the ignition switch to the "LOCK" (OFF) position.

    Q: Is the CAN bus line found to be normal? 

    1. YES:  Go to Step 2.
    2. NO:  Repair the CAN bus line (Refer to DIAGNOSIS ).
  2. STEP 2. Using scan tool (M.U.T.-III), read the engine control module diagnostic trouble code 

    Check again if the DTC is stored in the engine control module.

    Q: Is the DTC stored? 

    1. YES:  Troubleshoot the engine control module (Refer to DIAGNOSTIC TROUBLE CODE CHART ).
    2. NO:  Go to Step 3.
  3. STEP 3. Check whether the diagnostic trouble code is stored again. 

    Check again if the DTC is stored in the occupant classification-ECU.

    1. Erase the DTC.
    2. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
    3. Check if DTC is stored.

    Q: Is the DTC stored? 

    1. YES:  Replace the engine control module and register the ID codes (Refer to HOW TO REGISTER KEY ID ). Then, carry out the CAN bus diagnostics. Then go to Step 4.
    2. NO:  A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the engine control module and the occupant classification-ECU (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
  4. STEP 4. Check whether the diagnostic trouble code is stored again. 

    Check again if the DTC is stored in the occupant classification-ECU.

    1. Erase the diagnostic trouble code.
    2. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
    3. On completion, check that the diagnostic trouble code is stored again.

    Q: Is the DTC stored? 

    1. YES:  Replace the front seat cushion cover and pad assembly (Refer to FRONT SEAT ASSEMBLY ). Then, carry out the CAN bus diagnostics. Then go to Step 5.
    2. NO:  A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the engine control module and the occupant classification-ECU (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
  5. STEP 5. Check whether the diagnostic trouble code is stored again. 

    Recheck if the DTC is stored in the occupant classification-ECU.

    1. Erase the DTC.
    2. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
    3. On completion, check that the DTC is stored again.

    Q: Is the DTC stored? 

    1. YES:  Return to  Step 1.
    2. NO:  The procedure is complete.
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