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, 2) power back door warning buzzer circuit or 3) multiplex network door ECU.

WIRING DIAGRAM

A0029TVE02

CAUTION / NOTICE / HINT

Note


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

    Click here

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

  • As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (multiplex network body ECU) before performing this troubleshooting procedure.*

    Click here


    • *: for LHD

PROCEDURE


  1. CHECK OPERATION


    1. Check power back door system operation.

      Result
      Result Proceed to
      Power back door hazard warning lights do not come on A
      Power back door warning buzzer does not operate B

    B

    PERFORM ACTIVE TEST USING GTS Click here

    A

  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 Click here

    A

  3. REPLACE MULTIPLEX NETWORK DOOR ECU


    1. Temporarily replace the multiplex network door ECU with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK POWER BACK DOOR SYSTEM


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

      Result
      Result Proceed to
      The power back door hazard warning lights operate normally A
      The power back door hazard warning lights do not operate normally B

    A

    END (MULTIPLEX NETWORK DOOR ECU WAS DEFECTIVE)

    B

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

  5. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Back Door / Active Test.

    5. Perform the Active Test according to the display on GTS.


      Body Electrical > Back Door > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      PBD Buzzer Power back door warning buzzer sound OFF or ON -

      Body Electrical > Back Door > Active Test
      Tester Display
      PBD Buzzer
      Result
      Result Proceed to
      Power back door warning buzzer sounds A
      Power back door warning buzzer does not sound B

    A

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    B

  6. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR WARNING BUZZER - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)


    1. Disconnect the M19 power back door warning buzzer connector.

    2. Disconnect the X6 multiplex network door ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      M19-1 (BZR+) - X6-5 (BZR+) Always Below 1 Ω
      M19-2 (BZR-) - Body ground Always Below 1 Ω
      M19-1 (BZR+) or X6-5 (BZR+) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE POWER BACK DOOR WARNING BUZZER


    1. Temporarily replace the power back door warning buzzer with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. CHECK POWER BACK DOOR SYSTEM


    1. Check that the power back door warning buzzer operates normally.

      Result
      Result Proceed to
      Power back door warning buzzer sounds A
      Power back door warning buzzer does not sound B

    A

    END (POWER BACK DOOR WARNING BUZZER WAS DEFECTIVE)

    B

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here