WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Entry and Start System) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • The wireless door lock control system (w/ Smart Entry and Start System) troubleshooting procedure is based on the premise that the power door lock control system is operating properly. Check the power door lock control system first before troubleshooting the wireless door lock control system. Use this procedure to troubleshoot the wireless door lock control system (w/ Smart Entry and Start System).

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS CHECK

    Tech Tips


    • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

    • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

    • The following 5 items are important points for problem analysis:

    What Vehicle model, system name
    When Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time
    Where Whether the problem occurs at a specific location
    Under what conditions? Whether the doors were locked or unlocked, whether the engine switch was on, whether the engine has started
    How did it happen? Problem symptoms

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  3. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery before proceeding.


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  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally Click here.

      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  5. CHECK FOR DTC*


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTCs are not output A
      Wireless door lock control system DTCs are output B
      Smart entry and start system (for Entry Function) DTCs are output C

      B

      GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

      C

      GO TO SMART ENTRY AND START SYSTEM (FOR ENTRY FUNCTION) Click here

      A

  6. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.

      Result
      Result Proceed to
      Fault is not listed in Problem Symptoms Table A
      Fault is listed in Problem Symptoms Table B

      B

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU Click here

    2. Date List / Active Test Click here

    3. Operation Check Click here


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  8. ADJUST, REPAIR OR REPLACE


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  9. CONFIRMATION TEST


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    END