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Home >> Mitsubishi >> 2014 >> Lancer SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Keyless Operation System (Kos) - With Diagnostics) >> Diagnosis < Kos-Ecu > >> Symptom Procedures >> Inspection Procedure 8: The lock switch and open switch of the liftgate lock release handle do not work >> Diagnosis

Inspection Procedure 8: The lock switch and open switch of the liftgate lock release handle do not work: 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), read the diagnostic trouble code. 

    Check if any DTC is stored in the KOS-ECU.

    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 SCAN TOOL (M.U.T.-III)  ."
    2. Turn the power supply mode of the engine switch to ON.
    3. Check if DTC is stored.
    4. Turn the power supply mode of the engine switch to OFF.

    Q: Is the DTC stored? 

    1. YES:  Refer to DIAGNOSTIC TROUBLE CODE CHART  .
    2. NO:  Go to Step 2.
  2. STEP 2. Liftgate lock release handle (lock switch and open switch) check 

    Check that the liftgate lock release handle (lock switch and open switch) is normal (Refer to INSPECTION < Vehicles without power liftgate > or INSPECTION < Vehicles with power liftgate >).

    Q: Is the check result normal? 

    1. YES:  Go to Step 3.
    2. NO:  Replace the liftgate lock release handle.
  3. STEP 3. Check of open circuit in ground line between the liftgate lock release handle connector and the body ground. 
    NOTE: Before the wiring harness check, check the intermediate connector, and repair if necessary.

    Q: Is the check result normal? 

    1. YES:  Go to Step 4.
    2. NO:  Repair the wiring harness.
  4. STEP 4. KOS communication test 

    Using scan tool (M.U.T.-III), perform the antenna communication test to check that the outside transmission antenna assembly (liftgate) communicates normally (Refer to ON-VEHICLE SERVICE < KOS-ECU >  ).

    Q: Is the check result normal? 

    1. YES:  Go to Step 5.
    2. NO:  Perform troubleshooting for the diagnostic trouble code B240C (Refer to DIAGNOSTIC TROUBLE CODE CHART  ).
  5. STEP 5. Check of the troubles 

    Operate the liftgate lock release handle and check that the liftgate can be locked and opened.

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction is suspected (Refer to HOW TO DEAL WITH INTERMITTENT MALFUNCTION ).
    2. NO:  Replace KOS-ECU and register the ID codes (Refer to ON-VEHICLE SERVICE < KOS-ECU >  ).
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