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

WIRING DIAGRAM

1. 

   for Driver

2. 

   for Front Passenger

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   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 (for Driver) A All power seat functions do not operate (for Front Passenger) B One or more power seat functions do not operate C

   
   
   • AClick here
   • BClick here
   • C

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

2. Click here

   CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR DRIVER) - AUXILIARY BATTERY)

   
   

   1. Disconnect the X9*1 or W9*2 front power seat switch (for driver) connectors.

      
      

      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      Table 1. for LHD Tester Connection Condition Specified Condition X9-7 (+B1) - Body ground Power switch off 11 to 14 V
      Table 2. for RHD Tester Connection Condition Specified Condition W9-7 (+B1) - Body ground Power switch off 11 to 14 V

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

3. Click here

   CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR DRIVER) - BODY GROUND)

   
   

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

      Standard Resistance
      Table 3. for LHD Tester Connection Condition Specified Condition X9-2 (GND1) - Body ground Always Below 1 Ω
      Table 4. for RHD Tester Connection Condition Specified Condition W9-2 (GND1) - Body ground Always Below 1 Ω

   
   
   • OK

     REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER) (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

4. Click here

   CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - AUXILIARY BATTERY)

   
   

   1. Disconnect the W9*1 or X9*2 front power seat switch (for front passenger) connectors.

      
      

      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      Table 5. for LHD Tester Connection Condition Specified Condition W9-7 (+B) - Body ground Power switch off 11 to 14 V
      Table 6. for RHD Tester Connection Condition Specified Condition X9-7 (+B) - Body ground Power switch off 11 to 14 V X10-3 (IG) - Body ground Power switch on (IG) 11 to 14 V Power switch off Below 1 V

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

5. Click here

   CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - BODY GROUND)

   
   

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

      Standard Resistance
      Table 7. for LHD Tester Connection Condition Specified Condition W9-2 (GND) - Body ground Always Below 1 Ω
      Table 8. for RHD Tester Connection Condition Specified Condition X9-2 (GND) - Body ground Always Below 1 Ω

   
   
   • OK

     REPLACE FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR