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

DTC Code DTC Name
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) wireless door lock buzzer circuit or 3) multiplex network door ECU.

WIRING DIAGRAM

E270979E01

CAUTION / NOTICE / HINT

Note:

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

    Click hereClick here

  • When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE

  1. CHECK OPERATION

    1. Check power back door system operation.

    Result

    Proceed to

    Hazard warning light does not come on

    Power back door warning buzzer does not operate
    Power back door warning buzzer does not operate

    PERFORM ACTIVE TEST USING GTSClick here

    Hazard warning light does not come on

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

    1. Check wireless door lock operation.

      w/ Entry and Start System:Click here

      w/o Entry and Start System:Click here

    Result

    Proceed to

    Hazard answer-back function operates normally

    Hazard answer-back function does not operate
    Hazard answer-back function does not operate

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

    w/ Entry and Start System:Click here

    w/o Entry and Start System:Click here

    Hazard answer-back function operates normally

  3. REPLACE MULTIPLEX NETWORK DOOR ECU

    1. Temporarily replace the multiplex network door ECU with a new or normally functioning 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

    Proceed to

    The power back door hazard warning lights operate normally

    The power back door hazard warning lights operate abnormally
    The power back door hazard warning lights operate normally

    END (MULTIPLEX NETWORK DOOR ECU WAS DEFECTIVE)

    The power back door hazard warning lights operate abnormally

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    for LHD:Click here

    for RHD:Click here

  5. PERFORM ACTIVE TEST USING GTS

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

      Click hereClick here

      Body Electrical > Back Door > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      PBD Buzzer

      Wireless door lock buzzer sound

      ON or OFF

      -

      Body Electrical > Back Door > Active Test

      Tester Display

      PBD Buzzer

    Result

    Proceed to

    Wireless door lock buzzer sounds

    Wireless door lock buzzer does not sound
    Wireless door lock buzzer sounds

    REPLACE MULTIPLEX NETWORK DOOR ECU

    Click here

    Wireless door lock buzzer does not sound

  6. CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)

    1. Disconnect the U14 wireless door lock buzzer connector.

    2. Disconnect the U18 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

      U14-1 (BZR+) - U18-5 (BZR+)

      Always

      Below 1 Ω

      U14-2 (BZR-) - Body ground

      Always

      Below 1 Ω

      U14-1 (BZR+) or U18-5 (BZR+) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE WIRELESS DOOR LOCK BUZZER

    1. Temporarily replace the wireless door lock buzzer with a new or normally functioning one.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  8. CHECK POWER BACK DOOR SYSTEM

    1. Check that the wireless door lock buzzer operates normally.

    Result

    Proceed to

    Wireless door lock buzzer sounds

    Wireless door lock buzzer does not sound
    Wireless door lock buzzer sounds

    END (WIRELESS DOOR LOCK BUZZER WAS DEFECTIVE)

    Wireless door lock buzzer does not sound

    REPLACE MULTIPLEX NETWORK DOOR ECU

    Click here