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DTC B1149 ESL drive circuit fail: 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), check other system diagnostic trouble code. 
    CAUTION: To prevent damage to scan tool (MB991958), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (MB991958).
    1. Connect scan tool MB991958. Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III)  ."
    2. After performing the forced power supply output (refer to FORCED POWER SUPPLY OUTPUT PROCEDURE  ) "IG-ON".
    3. Check if any DTC is stored in the KOS-ECU.
    4. Turn the power supply mode of the engine switch to OFF.

    Q: Is the DTC stored? 

    1. YES:  Diagnose the KOS. Refer to DIAGNOSTIC TROUBLE CODE CHART  .
    2. NO:  Go to Step 2.
  2. STEP 2. Check of short to power supply, short of ground, and open circuit in PCK line between KOS-ECU connector and OSS-ECU connector. 

    Q: Is the check result normal? 

    1. YES:  Go to Step 3.
    2. NO:  Repair the connector(s) or wiring harness.
  3. STEP 3. Using scan tool (M.U.T.-III), check data list. 
    CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the 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 power supply mode of the engine switch to OFF.

      Check the OSS-ECU data list.

      Operation state Item No. Check item Display
      After starting the engine 9 ESL drive permission signal (KOS) OFF
      Other than above ON

      OK: Operation state and data list display agree with each other. 

    Q: Is the check result normal? 

    1. YES:  Go to Step 4.
    2. NO:  Replace the OSS-ECU and register the VIN (Refer to REGISTRATION WHEN REPLACING OSS-ECU  )
  4. STEP 4. Recheck for diagnostic trouble code. 
    1. Erase the DTC.
    2. Turn the power supply mode of the engine switch from OFF to ON.
    3. Check if DTC is stored.
    4. Turn the power supply mode of the engine switch from ON to OFF.

    Q: Is the DTC stored? 

    1. YES:  Replace the OSS-ECU and register the VIN (Refer to REGISTRATION WHEN REPLACING OSS-ECU  )
    2. NO:  Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION )
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