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

DESCRIPTION

When a signal is input into the position control ECU and switch assembly, the ECU manages the signals received from the power seat switch, and operates each motor. If the position control ECU and switch assembly receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the position control ECU and switch assembly receives 1 signal only.

WIRING DIAGRAM

A003XGSE02

INSPECTION PROCEDURE

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 A
      One or more power seat functions do not operate B

    B

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

    A

  2. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - BATTERY)


    1. Disconnect the X4*1 or W3*2 position control ECU and switch assembly 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
      X4-7 (+B) - Body ground Power switch off 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      W3-7 (+B) - Body ground Power switch off 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - BODY GROUND)


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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      X4-2 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      W3-2 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here