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DTC U0230: Power Gate CAN Timeout: 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 (M.U.T.-III) ."
    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? 

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

    Check again if the DTC is stored in the power liftgate control unit.

    Q: Is the DTC stored? 

  3. STEP 3. Using scan tool (M.U.T.-III), read the ETACS diagnostic trouble code 

    Check if the DTC No. U0230 stored in ETACS-ECU.

    Q: Is the DTC stored? 

    • YES:  Go to Step 4
    • NO:  Go to  Step 5
  4. STEP 4. Recheck for diagnostic trouble code. 

    Check again if the DTC is stored in the CAN box unit.

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

    Q: Is the DTC stored? 

    • YES:  Replace the power liftgate control unit.
    • NO:  A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the CAN box unit and the power liftgate control unit. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
  5. STEP 5. Recheck for diagnostic trouble code. 

    Check again if the DTC is stored in the CAN box unit.

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

    Q: Is the DTC stored? 

    • YES:  Replace the CAN box unit.
    • NO:  A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the CAN box unit and the power liftgate control unit. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
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