FRONT POWER SEAT CONTROL SYSTEM Front Power Seat does not Operate with Front Power Seat Switch

DESCRIPTION

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


WIRING DIAGRAM

Figure 1. for LHD

B006Q7BE05

Figure 2. for RHD

B006Q7BE04

CAUTION / NOTICE / HINT

Tech Tips

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

PROCEDURE


  1. CHECK FRONT POWER SEAT OPERATION


    • *1: for LHD

    • *2: for RHD


    1. Check that each function of the power seat operates normally by using the front power seat switch LH*1 or RH*2.

      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 - BATTERY AND BODY GROUND)


    • *1: for LHD

    • *2: for RHD


    1. B006KPNC11
      *A for LHD
      *B for RHD
      *a

      Front view of wire harness connector

      (to Front Power Seat Switch)

      Disconnect the front power seat switch LH*1 or RH*2 connectors.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      W19-2 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      W6-2 (E) - 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
      W19-7 (+B) - Body ground Always 11 to 14 V
      W20-12 (SYSB) - Body ground Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      W6-7 (+B) - Body ground Always 11 to 14 V
      W7-12 (SYSB) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR