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 the following procedure 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 and saved, the operation history information could be lost.

    • The operation history function uses the current system time of the GTS and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading 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


      Body Electrical > Main Body > Utility
      Tester Display
      Operation History
      Result
      Proceed to
      NEXT

    NEXT

  4. PRE-CHECK


    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 to the next step.

    2. Check the fuses and relays.

    3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the GTS, check for CAN communication system DTCs.

      Click here

      Result
      Result Proceed to
      CAN DTCs are not output A
      CAN DTCs are output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  6. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Using the GTS, check for LIN communication system DTCs.

      Click here

      Result
      Result Proceed to
      LIN DTCs are not output A
      LIN DTCs are output B

    B

    GO TO LIN COMMUNICATION SYSTEM Click here

    A

  7. CHECK FOR DTC (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)*


    1. Clear the DTCs.

      Click here


      Body Electrical > Master Switch > Clear DTCs

    2. Recheck for DTCs.


      Body Electrical > Master Switch > Trouble Codes
      Result
      Result Proceed to
      DTC B2312 is not output A
      DTC B2312 is output B

    B

    GO TO POWER WINDOW CONTROL SYSTEM Click here

    A

  8. CHECK FOR DTC (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))*


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs

    2. Recheck for DTCs.


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B1243 is not output A
      DTC B1243 is output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  9. 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

    GO TO STEP 11 Click here

    A

  10. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU

      Click here

    2. Data List / Active Test

      Click here

    3. Operation Check

      Click here

    4. Inspection

      Result
      Proceed to
      NEXT

    NEXT

  11. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  12. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END