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FRONT POWER SEAT CONTROL SYSTEM One-touch Walk-in Function does not Operate

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DTC Code DTC Name
  One-touch Walk-in Function does not Operate
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DESCRIPTION


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WIRING DIAGRAM


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  1. B0067GME08

    for Driver Seat

  2. B0065K7E08

    for Front Passenger Seat

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CAUTION / NOTICE / HINT

Note:

  • The front power seat control system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

    Click here

  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

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PROCEDURE


  1. Click here

    CHECK FRONT POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the position control ECU and switch assembly (driver seat) or position control ECU and switch assembly (front passenger seat).

      Click here

      Result
      Result Proceed to
      Driver power seat functions do not operate A
      Front passenger power seat functions do not operate B

  2. Click here

    CHECK SEAT BELT TENSION REDUCER SYSTEM


    1. Check the seat belt tension reducer system.

      Click here

      OK
      Seat belt tension reducer system is normal.
      Result
      Proceed to
      OK
      NG

  3. Click here

    CHECK FOR DTC


    1. Perform "DTC Output Confirmation Operation" procedure.

    2. Check for DTCs.


      1. Powertrain > Engine > Trouble Codes


      OK
      P0705 is not output.
      Result
      Proceed to
      OK
      NG

  4. Click here

    READ VALUE USING GTS (SHIFT SW POSITION)


    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.


      1. Body Electrical > Driver Seat > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Shift SW Position Park state signal Shift P or Shift Other

        Shift P: Shift lever in P

        Shift Other: Shift lever in a position other than P

        		 -



      1. Body Electrical > Driver Seat > Data List
        Tester Display
        Shift SW Position




      OK
      The GTS display changes correctly in response to the shift lever position.
      Result
      Proceed to
      OK
      NG

  5. Click here

    READ VALUE USING GTS (OPERATION LEVER STATE AND SLIDE FRONT OPERATION PERMITTED)


    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.


      1. Body Electrical > Driver Seat > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Operation Lever State Reclining remote control lever sub-assembly state Lock or Unlock

        Lock: Reclining remote control lever sub-assembly locked

        Unlock: Reclining remote control lever sub-assembly unlocked

        		 -
        Slide Front Operation Permitted Forward operation permission state NO or YES

        NO: Not permitted

        YES: Permitted

        		 -




      1. Body Electrical > Driver Seat > Data List
        Tester Display
        Operation Lever State
        Slide Front Operation Permitted





      Result
      Result Proceed to
      The value of each Data List item change accordingly. A
      The value of the Data List item "Operation Lever State"not change according to the operation of the reclining remote control lever sub-assembly. B
      The value of the Data List item "Slide Front Operation Permitted" does not change according to the forward operation permission state. C
      The value of each Data List item does not change. D

  6. Click here

    INSPECT INNER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (DRIVER SEAT))


    1. Remove the inner limit switch assembly (front seatback edge protector (driver seat)).

      Click here

    2. Inspect the inner limit switch assembly (front seatback edge protector (driver seat)).

      Click here

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE INNER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (DRIVER SEAT))Click here

  7. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) - INNER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR DRIVER SEAT (DRIVER))


    1. Disconnect the b5*1 or a5*2 position control ECU and switch assembly (driver seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the d4*1 or c3*2 inner limit switch assembly (front seatback edge protector (driver seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 1. for LHD
      Tester Connection Condition Specified Condition
      b5-6 (SWS2) - d4-1 Always Below 1 Ω
      b5-6 (SWS2) or d4-1 - Body ground Always 10 kΩ or higher
      b5-1 (SGND) - d4-2 Always Below 1 Ω
      b5-1 (SGND) or d4-2 - Body ground Always 10 kΩ or higher
      Table 2. for RHD
      Tester Connection Condition Specified Condition
      a5-6 (ELS2) - c3-1 Always Below 1 Ω
      a5-6 (ELS2) or c3-1 - Body ground Always 10 kΩ or higher
      a5-1 (SGND) - c3-2 Always Below 1 Ω
      a5-1 (SGND) or c3-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    INSPECT OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (DRIVER SEAT))


    1. Remove the outer limit switch assembly (front seatback edge protector (driver seat)).

      Click here

    2. Inspect the outer limit switch assembly (front seatback edge protector (driver seat)).

      Click here

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (DRIVER SEAT))Click here

  9. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) - OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (DRIVER SEAT))


    1. Disconnect the b5*1 or a5*2 position control ECU and switch assembly (driver seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the b10*1 or a9*2 outer limit switch assembly (front seatback edge protector (driver seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 3. for LHD
      Tester Connection Condition Specified Condition
      b5-2 (SWS1) - b10-1 Always Below 1 Ω
      b5-2 (SWS1) or b10-1 - Body ground Always 10 kΩ or higher
      b5-1 (SGND) - b10-2 Always Below 1 Ω
      b5-1 (SGND) or b10-2 - Body ground Always 10 kΩ or higher
      Table 4. for RHD
      Tester Connection Condition Specified Condition
      a5-2 (ELS1) - a9-1 Always Below 1 Ω
      a5-2 (ELS1) or a9-1 - Body ground Always 10 kΩ or higher
      a5-1 (SGND) - a9-2 Always Below 1 Ω
      a5-1 (SGND) or a9-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) - OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (DRIVER SEAT))


    1. Disconnect the b5*1 or a5*2 position control ECU and switch assembly (driver seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the b10*1 or a9*2 outer limit switch assembly (front seatback edge protector (driver seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 5. for LHD
      Tester Connection Condition Specified Condition
      b5-1 (SGND) - b10-2 Always Below 1 Ω
      b5-1 (SGND) or b10-2 - Body ground Always 10 kΩ or higher
      Table 6. for RHD
      Tester Connection Condition Specified Condition
      a5-1 (SGND) - a9-2 Always Below 1 Ω
      a5-1 (SGND) or a9-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. Click here

    READ VALUE USING GTS (P SEAT BUCKLE SWITCH)


    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 / Passenger Seat / Data List.

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


      1. Body Electrical > Passenger Seat > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        P Seat Buckle Switch Front passenger seat belt buckle switch ON or OFF

        ON: Front passenger seat belt fastened

        OFF: Front passenger seat belt unfastened

        		 -



      1. Body Electrical > Passenger Seat > Data List
        Tester Display
        P Seat Buckle Switch




      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

  12. Click here

    READ VALUE USING GTS (OCCUPANT SENSOR)


    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 / Passenger Seat / Data List.

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


      1. Body Electrical > Passenger Seat > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Occupant Sensor Occupant sensor condition ON or OFF

        ON: Occupant Sensor on

        OFF: Occupant Sensor off

        		 -



      1. Body Electrical > Passenger Seat > Data List
        Tester Display
        Occupant Sensor




      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

  13. Click here

    CHECK FOR DTC


    1. Perform "DTC Output Confirmation Operation" procedure.

    2. Check for DTCs.


      1. Powertrain > Engine > Trouble Codes


      OK
      P0705 is not output.
      Result
      Proceed to
      OK
      NG

  14. Click here

    READ VALUE USING GTS (SHIFT P POSITION STATE)


    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 / Passenger Seat / Data List.

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


      1. Body Electrical > Passenger Seat > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Shift SW Position Park state signal Shift P or Shift Other

        Shift P: Shift lever in P

        Shift Other: Shift lever in a position other than P

        		 -



      1. Body Electrical > Passenger Seat > Data List
        Tester Display
        Shift SW Position




      OK
      The GTS display changes correctly in response to the shift lever position.
      Result
      Proceed to
      OK
      NG

  15. Click here

    READ VALUE USING GTS (OPERATION LEVER STATE AND SLIDE FRONT OPERATION PERMITTED)


    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 / Passenger Seat / Data List.

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


      1. Body Electrical > Passenger Seat > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Operation Lever State Reclining remote control lever sub-assembly state Lock or Unlock

        Lock: Reclining remote control lever sub-assembly locked

        Unlock: Reclining remote control lever sub-assembly unlocked

        		 -
        Slide Front Operation Permitted Forward operation permission state NO or YES

        NO: Not permitted

        YES: Permitted

        		 -




      1. Body Electrical > Passenger Seat > Data List
        Tester Display
        Operation Lever State
        Slide Front Operation Permitted





      Result
      Result Proceed to
      The value of each Data List item change accordingly. A
      The value of the Data List item "Operation Lever State" does not change according to the operation of the reclining remote control lever sub-assembly. B
      The value of the Data List item "Slide Front Operation Permitted" does not change according to the forward operation permission state. C
      The value of each Data List item does not change. D

  16. Click here

    INSPECT INNER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (FRONT PASSENGER SEAT))


    1. Remove the inner limit switch assembly (front seatback edge protector (front passenger seat)).

      Click here

    2. Inspect the inner limit switch assembly (front seatback edge protector (front passenger seat)).

      Click here

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE INNER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (FRONT PASSENGER SEAT))Click here

  17. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT) - INNER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (FRONT PASSENGER SEAT))


    1. Disconnect the a5*1 or b5*2 position control ECU and switch assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the c3*1 or d4*2 inner limit switch assembly (front seatback edge protector (front passenger seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 7. for LHD
      Tester Connection Condition Specified Condition
      a5-6 (ELS2) - c3-1 Always Below 1 Ω
      a5-6 (ELS2) or c3-1 - Body ground Always 10 kΩ or higher
      a5-1 (SGND) - c3-2 Always Below 1 Ω
      a5-1 (SGND) or c3-2 - Body ground Always 10 kΩ or higher
      Table 8. for RHD
      Tester Connection Condition Specified Condition
      b5-6 (SWS2) - d4-1 Always Below 1 Ω
      b5-6 (SWS2) or d4-1 - Body ground Always 10 kΩ or higher
      b5-1 (SGND) - d4-2 Always Below 1 Ω
      b5-1 (SGND) or d4-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  18. Click here

    INSPECT OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (FRONT PASSENGER SEAT))


    1. Remove the outer limit switch assembly (front seatback edge protector).

      Click here

    2. Inspect the outer limit switch assembly (front seatback edge protector).

      Click here

      Result
      Proceed to
      OK
      NG

  19. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT) - OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (FRONT PASSENGER SEAT))


    1. Disconnect the a5*1 or b5*2 position control ECU and switch assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the a9*1 or b10*2 outer limit switch assembly (front seatback edge protector (front passenger seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 9. for LHD
      Tester Connection Condition Specified Condition
      a5-2 (ELS1) - a9-1 Always Below 1 Ω
      a5-2 (ELS1) or a9-1 - Body ground Always 10 kΩ or higher
      a5-1 (SGND) - a9-2 Always Below 1 Ω
      a5-1 (SGND) or a9-2 - Body ground Always 10 kΩ or higher
      Table 10. for RHD
      Tester Connection Condition Specified Condition
      b5-2 (SWS1) - b10-1 Always Below 1 Ω
      b5-2 (SWS1) or b10-1 - Body ground Always 10 kΩ or higher
      b5-1 (SGND) - b10-2 Always Below 1 Ω
      b5-1 (SGND) or b10-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  20. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT) - OUTER LIMIT SWITCH ASSEMBLY (FRONT SEATBACK EDGE PROTECTOR (FRONT PASSENGER SEAT))


    1. Disconnect the a5*1 or b5*2 position control ECU and switch assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the a9*1 or b10*2 outer limit switch assembly (front seatback edge protector (front passenger seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 11. for LHD
      Tester Connection Condition Specified Condition
      a5-1 (SGND) - a9-2 Always Below 1 Ω
      a5-1 (SGND) or a9-2 - Body ground Always 10 kΩ or higher
      Table 12. for RHD
      Tester Connection Condition Specified Condition
      b5-1 (SGND) - b10-2 Always Below 1 Ω
      b5-1 (SGND) or b10-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  21. Click here

    INSPECT OCCUPANT DETECTION SENSOR (FRONT SEAT CUSHION PAD WITH COVER (FRONT PASSENGER SEAT))


    1. Remove the occupant detection sensor (front seat cushion pad with cover (front passenger seat)).

      Click here

    2. Inspect the occupant detection sensor (front seat cushion pad with cover (front passenger seat)).

      Click here

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE OCCUPANT DETECTION SENSOR (FRONT SEAT CUSHION PAD WITH COVER (FRONT PASSENGER SEAT))Click here

  22. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT) - OCCUPANT DETECTION SENSOR (FRONT SEAT CUSHION PAD WITH COVER (FRONT PASSENGER SEAT) - BODY GROUND)


    1. Disconnect the a5*1 or b5*2 position control ECU and switch assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the T2*1 or U11*2 occupant detection sensor (front seat cushion pad with cover (front passenger seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 13. for LHD
      Tester Connection Condition Specified Condition
      a5-9 (SSRC) - T2-1 (RDC) Always Below 1 Ω
      a5-9 (SSRC) or T2-1 (RDC) - Body ground Always 10 kΩ or higher
      T2-2 (E) - Body ground Always Below 1 Ω
      Table 14. for RHD
      Tester Connection Condition Specified Condition
      b5-9 (SSRC) - U11-1 (RDC) Always Below 1 Ω
      b5-9 (SSRC) or U11-1 (RDC) - Body ground Always 10 kΩ or higher
      U11-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  23. Click here

    INSPECT FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT)


    1. Remove the front seat inner belt assembly (front passenger seat).

      Click here

    2. Inspect the front seat inner belt assembly (front passenger seat) (seat belt warning switch).

      Click here

      Result
      Proceed to
      OK
      NG

  24. Click here

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT) - FRONT SEAT INNER BELT ASSEMBLY (FRONT PASSENGER SEAT) - BODY GROUND)


    1. Disconnect the a5*1 or b5*2 position control ECU and switch assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the T2*1 or U11*2 front seat inner belt assembly (front passenger seat) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 15. for LHD
      Tester Connection Condition Specified Condition
      a5-10 (PBCL) - T2-1 (RDC) Always Below 1 Ω
      a5-10 (PBCL) or T2-1 (RDC) - Body ground Always 10 kΩ or higher
      T2-2 (E) - Body ground Always Below 1 Ω
      Table 16. for RHD
      Tester Connection Condition Specified Condition
      b5-10 (PBCL) - U11-1 (RDC) Always Below 1 Ω
      b5-10 (PBCL) or U11-1 (RDC) - Body ground Always 10 kΩ or higher
      U11-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT PASSENGER SEAT)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR