POWER BACK DOOR SYSTEM Power Back Door Warning System does not Operate

DESCRIPTION

When the power back door warning system does not operate, one of the following may be malfunctioning: 1) wireless door lock control system or 2) power back door ECU.

WIRING DIAGRAM

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INSPECTION PROCEDURE

Note


  • The power back door warning function can be customized. Make sure the function is ON. Click here


  • The power back door system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure Click here.

PROCEDURE


  1. CHECK OPERATION


    1. Check power back door system operation.

      Result
      Result Proceed to
      Power back door warning buzzer does not operate A
      Hazard warning light does not come on* B

      • *: w/ Power back door hazard warning light


    B

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION) Click here

    A

    REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) Click here

  2. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM (HAZARD ANSWER-BACK FUNCTION)


    1. Check wireless door lock operation Click here.

      Result
      Result Proceed to
      Hazard answer-back function operates normally A
      Hazard answer-back function does not operate B

    B

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (NO ANSWER-BACK) Click here

    A

  3. REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT)


    1. Replace the power back door ECU (power back door motor unit) Click here.


    NEXT

  4. CHECK POWER BACK DOOR OPERATION


    1. Check that the power back door hazard warning lights operate normally Click here.

      OK
      The power back door hazard warning lights operate normally.

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    OK

    END (POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) WAS DEFECTIVE)