FRONT POWER SEAT CONTROL SYSTEM(w/ Memory) Front Power Seat does not Operate with Front Power Seat Switch

DESCRIPTION

Signals are input into the front power seat switch LH or front power seat switch RH. The built-in ECU manages the signals received from the front power seat switch LH or front power seat switch RH, and operates each motor. If the front power seat switch LH or front power seat switch RH receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the front power seat switch LH or front power seat switch RH receives 1 signal only.

WIRING DIAGRAM


  1. for Driver

    A0003WLE51
    *a from Auxiliary Battery
    *b P/SEAT F/L
    *c Front Power Seat Switch LH

  2. for Front Passenger

    A0003WLE52
    *a from Auxiliary Battery
    *b P/SEAT F/R
    *c Front Power Seat Switch RH

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK FRONT POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the power seat switch Click here.

      Result
      Result Proceed to
      All power seat functions do not operate (for Driver) A
      All power seat functions do not operate (for Front Passenger) B
      One or more power seat functions do not operate C

    B

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - AUXILIARY BATTERY) Click here

    C

    GO TO OTHER DIAGNOSIS PROCEDURE (One or more Power Seat Motors do not Operate) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - AUXILIARY BATTERY)


    1. Disconnect the X9 front power seat switch LH connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      X9-7 (+B) - Body ground Power switch off 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X9-2 (GND) - Body ground Always Below 1 Ω

    OK

    REPLACE FRONT POWER SEAT SWITCH LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - AUXILIARY BATTERY)


    1. Disconnect the W9 front power seat switch RH connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W9-7 (+B) - Body ground Power switch off 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W9-2 (GND) - Body ground Always Below 1 Ω

    OK

    REPLACE FRONT POWER SEAT SWITCH RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR