FRONT POWER SEAT CONTROL SYSTEM Front Power Seat does not Operate with Front Power Seat Switch

DESCRIPTION

When a signal is input into the front power seat switch, the ECU receives manages the signals operates each motor. When 2 or more signals are input, the motors only operate when the signals are from the slide switch and reclining switch.

WIRING DIAGRAM

A01WRYDE05

PROCEDURE


  1. INSPECT FUSE (P/SEAT F/L, P/SEAT F/R, MPX-B NO. 1)


    1. Remove the P/SEAT F/L*1, P/SEAT F/R*2 and MPX-B NO. 1 fuses from the main body ECU (multiplex network body ECU).


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      P/SEAT F/L fuse Always Below 1 Ω
      MPX-B NO. 1 fuse Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      P/SEAT F/R fuse Always Below 1 Ω
      MPX-B NO. 1 fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - BATTERY AND BODY GROUND)


    1. A01WS0XE01

      Disconnect the c62*1, c63*1 or c57*2, c58*2 front power seat switch connectors.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      c62-6 (+B) - Body ground Always 11 to 14 V
      c63-12 (SYSB) - Body ground Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      c57-6 (+B2) - Body ground Always 11 to 14 V
      c58-12 (SYSB) - Body ground Always 11 to 14 V

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      c62-1 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      c57-1 (GND2) - Body ground Always Below 1 Ω

    OK

    REPLACE FRONT POWER SEAT SWITCH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR