FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) Power Seat Power Easy Access System Function does not Operate

DESCRIPTION

When the engine switch is off and shift lever is in P, the power seat slides rearward when the seat belt tongue plate is disengaged from the front seat inner belt assembly LH (auto away function). Also the power seat slides forward when the seat belt tongue plate is engaged to the front seat inner belt assembly LH with the engine switch on (ACC or IG), and shift lever is in P.

WIRING DIAGRAM

A01G67LE01

INSPECTION PROCEDURE

Note


  • The front power seat control system (w/ Memory) uses the CAN communication system. First, confirm that there are no malfunctions in the communication system by checking the communication function of the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure Click here.

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

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 LH Click here.

      Result
      Result Proceed to
      Power seat functions operate normally A
      All power seat functions do not operate B
      One or more power seat motors do not operate C

    B

    GO TO OTHER DIAGNOSIS PROCEDURE (Front Power Seat does not Operate with Front Power Seat Switch) Click here

    C

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

    A

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Driver Seat / Data List.

    5. Read the Data List according to the display on the GTS.

      Driver Seat
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Driver Seat Buckle SW Driver seat belt buckle switch / ON or OFF

      ON: Driver seat belt fastened

      OFF: Driver seat belt unfastened

      		 -
      OK
      On the GTS screen, the item changes between ON and OFF according to the above.

    NG

    INSPECT FRONT SEAT INNER BELT ASSEMBLY LH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (BATTERY - FRONT SEAT OUTER BELT ASSEMBLY LH)


    1. Disconnect the P24 front seat outer belt assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      P24-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT SEAR OUTER BELT ASSEMBLY LH - FRONT POWER SEAT SWITCH LH)


    1. Disconnect the X10 front power seat switch LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P24-2 (L) - X10-9 (DRDC) Always Below 1 Ω
      P24-2 (L) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK SEAT BELT TENSION REDUCER SYSTEM


    1. Check that the seat belt tension reducer system Click here.

      OK
      Seat belt tension reducer system is normal.

    NG

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH

    OK

  6. REPLACE FRONT POWER SEAT SWITCH LH


    1. Replace the front power seat switch LH Click here.


    NEXT

  7. CHECK POWER SEAT POWER EASY ACCESS SYSTEM


    1. Check that the power seat easy access system operates normally when engaging and disengaging the tongue plate of the seat belt with the shift lever in P Click here.

      OK
      Power seat power easy access system is normal.

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    OK

    END (FRONT POWER SEAT SWITCH LH WAS DEFECTIVE)

  8. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH


    1. A01G5IME16
      Text in Illustration
      *a

      Component without harness connected

      (Front Seat Inner Belt Assembly LH)

      Remove the front seat inner belt assembly LH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Driver seat belt unfastened 10 kΩ or higher
      1 - 2 Driver seat belt fastened Below 1 Ω

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - FRONT SEAT INNER BELT ASSEMBLY LH)


    1. Disconnect the X10 front power seat switch LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X10-10 (DBCL) - T14-1 Always Below 1 Ω
      T14-2 - Body ground Always Below 1 Ω
      X10-10 (DBCL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH LH Click here