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

B003NLIE01

CAUTION / NOTICE / HINT

Note


  • If the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.

    Click here

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

    Click here

PROCEDURE


  1. CHECK OPERATION


    1. Check power back door system operation.

      Click here

      Result
      Result Proceed to
      Hazard warning light does 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

      OK
      Hazard answer-back function operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Click here

  3. PERFORM ACTIVE TEST USING GTS


    1. Check the Data List for proper functioning of the wireless door lock buzzer.

      Click here


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

      Body Electrical > Back Door > Active Test
      Tester Display
      PBD Buzzer
      OK
      Power back door warning buzzer sounds.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

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


    1. Disconnect the V14 power back door warning buzzer connector.

    2. Disconnect the V12 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
      V14-1 (BZR+) - V12-5 (BZR+) Always Below 1 Ω
      V14-2 (BZR-) - Body ground Always Below 1 Ω
      V14-1 (BZR+) or V12-5 (BZR+) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE POWER BACK DOOR WARNING BUZZER


    1. Temporarily replace the power back door warning buzzer with a new or normally functioning one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK POWER BACK DOOR SYSTEM


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

      Click here

      OK
      Power back door warning buzzer sounds.
      Result
      Proceed to
      OK
      NG

    OK

    END (POWER BACK DOOR WARNING BUZZER WAS DEFECTIVE)

    NG

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here