POWER DOOR LOCK CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use these procedures to troubleshoot the power door lock control system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  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 ignition switch was ON, whether the engine has started
    How did it happen? Problem symptoms
    Result
    Proceed to
    NEXT

    NEXT

  3. READ AND SAVE OPERATION HISTORY

    Note


    • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read out and saved, the operation history information could be lost.

    • The function "Read operation history" uses the current system time setting inside the GTS and the time counter inside the controlling ECU to calculate the timings shown in the operation history. For this reason, before reading out the operation history, first make sure that the GTS system clock is accurately set to the current time.


    1. Read and save operation history using the GTS.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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

    Result
    Proceed to
    NEXT

    NEXT

  5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the GTS to check if the CAN communication system is functioning normally.


      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (w/ Central Gateway ECU) B
      CAN DTC is output (w/o Central Gateway ECU) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  6. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Check if the LIN communication system is functioning normally.

      Click here

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

    B

    GO TO LIN COMMUNICATION SYSTEM Click here

    A

  7. CHECK FOR DTC*


    1. Check for DTCs.

      Click here

    2. Recheck for DTCs.

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

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  8. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Fault is not listed in Problem Symptoms Table (Fault can be simulated) A
      Fault is not listed in Problem Symptoms Table (Fault cannot be simulated) B
      Fault is listed in problem symptoms table C

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    C

    ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

    A

  9. OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Operation Check.

      Click here

    2. Terminals of ECU.

      Click here

    3. Data List / Active Test.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  11. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END