POWER WINDOW CONTROL SYSTEM Remote Up / Down Function does not Operate

DESCRIPTION

When the ignition switch is ON, the power window regulator master switch assembly sends remote up and down signals to each power window regulator motor assembly via LIN communication.

WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note


  • w/ Automatic Light Control System:

    If the body ECU has been replaced, it is necessary to initialize the body ECU.

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  • w/ Door Control Battery:

    As the door control battery is installed between the vehicle battery and body ECU, first perform the inspections to confirm that there are no malfunctions in the power source circuit for the body ECU before performing this troubleshooting procedure.

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  • If a power window regulator motor assembly has been replaced with a new one, initialize the power window control system.

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PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (LIN BUS CIRCUIT)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the G27 body ECU connector.

    2. Disconnect the K6*1 or J12*2 power window regulator master switch connector.

    3. Disconnect the J9*1 front power window regulator motor assembly RH connector.

    4. Disconnect the K9*2 front power window regulator motor assembly LH connector.

    5. Disconnect the M4 rear power window regulator motor assembly LH connector.

    6. Disconnect the L4 rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G27-3 (LIN2) - K6-17 (LIN1)*1 Always Below 1 Ω
      G27-3 (LIN2) - J12-17 (LIN1)*2 Always Below 1 Ω
      G27-3 (LIN2) - J9-9 (LIN)*1 Always Below 1 Ω
      G27-3 (LIN2) - K9-9 (LIN)*2 Always Below 1 Ω
      G27-3 (LIN2) - M4-9 (LIN) Always Below 1 Ω
      G27-3 (LIN2) - L4-9 (LIN) Always Below 1 Ω
      G27-3 (LIN2) - Body ground Always 10 kΩ or higher
      K6-17 (LIN1) - Body ground*1 Always 10 kΩ or higher
      J12-17 (LIN1) - Body ground*2 Always 10 kΩ or higher
      J9-9 (LIN) - Body ground*1 Always 10 kΩ or higher
      K9-9 (LIN) - Body ground*2 Always 10 kΩ or higher
      M4-9 (LIN) - Body ground Always 10 kΩ or higher
      L4-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY


    1. Replace the power window regulator master switch assembly.

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    2. Check that the remote up and down functions using the power window regulator master switch assembly can operate all the power windows.

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      OK
      Remote up and down functions are normal.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE BODY ECU Click here

    C

    REPLACE BODY ECU Click here