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

A01EN1TE04

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT FUSE (FR P/SEAT LH, FR P/SEAT RH, ECU-B2)


    1. Remove the FR P/SEAT LH*1, FR P/SEAT RH*2 and ECU-B2 fuses from the main 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
      FR P/SEAT LH fuse Always Below 1 Ω
      ECU-B2 fuse Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      FR P/SEAT RH fuse Always Below 1 Ω
      ECU-B2 fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

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


    1. A01EQXTE04

      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 (+B) - 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 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH Click here