POWER BACK DOOR SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • The power back door system troubleshooting procedure is based on the premise that the entry and start system (for Entry Function) is operating normally. Check the power back door system first before troubleshooting the power back door system.

    Click here

  • Use the following procedure to troubleshoot the power back door system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the power switch off.

      Standard voltage
      11 to 14 V

      Tech Tips


      • A simple method to determine whether the auxiliary battery is discharged is to operate the horn.

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

    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

  3. 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

  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. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes

    2. Clear the DTCs.

      Click here


      Body Electrical > Back Door > Clear DTCs

    3. Recheck for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART 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. Operation Check

      Click here

    2. Terminals of ECU

      Click here

    3. Data List / Active Test

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. ADJUST, REPAIR OR REPLACE


    1. Check whether the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has been performed.

      Result
      Result Proceed to
      The replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has been performed. A
      The replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has not been performed. B

    B

    GO TO STEP 10 Click here

    A

  9. INITIALIZE POWER BACK DOOR SYSTEM


    1. Initialize the power back door system.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END