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Inspection Procedure 15: KOS timer lock function does not work: Diagnosis

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools: 

  1. STEP 1. Check the operation of the keyless operation system (keyless entry system). 

    Operate the keyless operation key and check that all doors lock and unlock.

    Q: Is the check result normal? 

    YES  : Go to Step 2.

    NO  : Refer to INSPECTION PROCEDURE 14: "KEYLESS ENTRY SYSTEM DOES NOT WORK  ".

  2. STEP 2. Using scan tool MB991958, read the diagnostic trouble code. 
    CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (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)  ".
      Fig 1: Connecting Special Tool MB991910 To Data Link Connector
      G05373979Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    2. Turn the ignition switch to the "ON" position.
    3. Check whether the KOS-ECU related DTC is set.
    4. Turn the ignition switch to the "LOCK" (OFF) position.

    Q: Is the DTC set? 

    YES  : Diagnose the KOS-ECU. Refer to DIAGNOSTIC TROUBLE CODE CHART  .

    NO  : Go to Step 3.

  3. STEP 3. Check of the troubles 

    Check that the KOS timer lock function operates.

    Q: Is the check result normal? 

    YES  : The diagnosis is complete.

    NO  : Perform troubleshooting for each door switch (Refer to TROUBLESHOOTING ).