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

DESCRIPTION

Signals are input into the position control ECU and switch assembly. The built-in 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

A002AE4E05

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK FRONT POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the position control ECU and switch assembly.

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

    A

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


    1. Disconnect the e6 and e7*1 or d6 and d7*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
      e6-7 (+B) - Body ground Always 11 to 14 V
      e7-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      for RHD
      Tester Connection Condition Specified Condition
      d6-7 (+B) - Body ground Always 11 to 14 V
      d7-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    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
      e6-2 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      d6-2 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR