REAR POWER SEAT CONTROL SYSTEM(for Second Row) Back Door Courtesy Switch Circuit

DESCRIPTION

The fold seat control ECU receives switch operation signals, the driving condition signal and back door courtesy light switch signal and operates the rear power seat according to these signals.

WIRING DIAGRAM

A01RBU3E08
*1 Back Door Lock Assembly (Back Door Courtesy Light Switch)
*2 Fold Seat Control ECU (Rear RH Seat)
*3 Fold Seat Control ECU (Rear LH Seat)

PROCEDURE


  1. CHECK BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY LIGHT SWITCH)


    1. Check that the back door lock assembly (back door courtesy light switch) turns on and off according to the back door operation.

      OK
      Back door lock assembly (back door courtesy light switch) turns on and off normally according to the back door operation.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - FOLD SEAT CONTROL ECU AND BODY GROUND)


    1. Disconnect the Z7 back door lock assembly connector.

    2. Disconnect the x3*1 or y3*2 fold seat control ECU connector.


      • *1: for Rear RH Seat

      • *2: for Rear LH Seat

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

      Standard Resistance
      for Rear RH Seat
      Tester Connection Condition Specified Condition
      Z7-8 (CTY) - x3-19 (BDCY) Always Below 1 Ω
      Z7-7 (E) - Body ground Always Below 1 Ω
      Z7-8 (CTY) or x3-19 (BDCY) - Body ground Always 10 kΩ or higher
      for Rear LH Seat
      Tester Connection Condition Specified Condition
      Z7-8 (CTY) - y3-19 (BDCY) Always Below 1 Ω
      Z7-7 (E) - Body ground Always Below 1 Ω
      Z7-8 (CTY) or y3-19 (BDCY) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    GO TO PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR