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

DTC Code DTC Name
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 assembly 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

Figure 1. for LHD:
B359786E06
Figure 2. for RHD:
B359786E07

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 power seat switch assembly.

      Click here

    Result

    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 - BATTERY)

    1. B359787C16

      *A

      for LHD

      *B

      for RHD

      *a

      Front view of wire harness connector

      (to Position Control ECU and Switch Assembly)

      Disconnect the e18 position control ECU and switch assembly connector.

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

      Standard Resistance

      for LHD

      Tester Connection

      Condition

      Specified Condition

      e18-2 (GND1) - Body ground

      Always

      Below 1 Ω

      for RHD

      Tester Connection

      Condition

      Specified Condition

      d27-2 (GND1) - 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

      e18-7 (+B1) - Body ground

      Power switch off

      11 to 14 V

      e8-3 (IG) - Body ground

      Power switch off

      Below 1 V

      Power switch on (IG)

      11 to 14 V

      for RHD

      Tester Connection

      Condition

      Specified Condition

      d27-7 (+B1) - Body ground

      Power switch off

      11 to 14 V

      d28-3 (IG) - Body ground

      Power switch off

      Below 1 V

      Power switch on (IG)

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR