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 (for Driver Side). The built-in ECU manages the signals received from the power seat switch, and operates each motor. If the front power seat switch (for Driver Side) receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the front power seat switch (for Driver Side) receives 1 signal only.

WIRING DIAGRAM


  1. for LHD

    A01HIR4E07

  2. for RHD

    A01HIR4E08

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 front power seat switch (for Driver Side).

      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 (FRONT POWER SEAT SWITCH [for Driver Side] - BATTERY AND BODY GROUND)


    1. A01HIM2C03
      *A for LHD
      *B for RHD
      *a

      Front view of wire harness connector

      (to Front Power Seat Switch [for Driver Side])

      Disconnect the g11*1 and g12*1 or f6*2 and f7*2 front power seat switch (for Driver Side) connectors.


      • *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
      g11-2 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      f6-2 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      g11-7 (+B) - Body ground Always 11 to 14 V
      g12-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      g12-12 (SYSB) - Body ground Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      f6-7 (+B) - Body ground Always 11 to 14 V
      f7-3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      f7-12 (SYSB) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH (for Driver Side) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR