REAR POWER SEAT CONTROL SYSTEM(for Second Row) Reclining Motor Circuit

DESCRIPTION

Tech Tips


  • The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH.

  • The rear seatback frame sub-assembly is a collective term for the rear seatback frame sub-assembly RH and the rear seatback frame sub-assembly LH.

The fold seat control ECU receives switch operation signals from the rear power seat switch and operates the reclining motor according to the received signal. While the reclining motor is operating, the Hall IC built into the fold motor detects the position of the seatback and sends a fold motor position sensor signal to the fold seat control ECU. The fold seat control ECU uses the Hall IC to detect abnormalities, such as if the rear seatback is jammed.

WIRING DIAGRAM

A01RAFGE06

PROCEDURE


  1. INSPECT REAR SEATBACK FRAME SUB-ASSEMBLY (RECLINING MOTOR)


    1. Remove the rear seatback frame sub-assembly.


    2. Inspect the rear seatback frame sub-assembly (reclining motor).


      Result
      Result
      OK
      NG

    NG

    REPLACE REAR SEATBACK FRAME SUB-ASSEMBLY for Rear LH Seat: Click here
    REPLACE REAR SEATBACK FRAME SUB-ASSEMBLY for Rear RH Seat: Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - RECLINING MOTOR)


    1. Disconnect the x4*1 or y4*2 fold seat control ECU connector.


      • *1: for Rear RH Seat

      • *2: for Rear LH Seat

    2. Disconnect the x1*1 or y2*2 reclining motor 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
      x4-3 (RCL+) - x1-1 Always Below 1 Ω
      x4-3 (RCL+) or x1-1 - Body ground Always 10 kΩ or higher
      x4-7 (RCL-) - x1-2 Always Below 1 Ω
      x4-7 (RCL-) or x1-2 - Body ground Always 10 kΩ or higher
      for Rear LH Seat
      Tester Connection Condition Specified Condition
      y4-3 (RCL+) - y2-1 Always Below 1 Ω
      y4-3 (RCL+) or y2-1 - Body ground Always 10 kΩ or higher
      y4-7 (RCL-) - y2-2 Always Below 1 Ω
      y4-7 (RCL-) or y2-2 - Body ground Always 10 kΩ or higher
      Result
      Result
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR