EASY ACCESS BUCKLE SYSTEM Driver Seat Easy Access Buckle Function does not Operate

DESCRIPTION

When the driver side door is opened, the position control ECU assembly receives a door open signal from the main body ECU (multiplex network body ECU) via the CAN communication line.The position control ECU assembly raises the front seat inner belt assembly based on the received signal.After the seat belt is unfastened from the tongue plate, the position control ECU assembly lowers the front seat inner belt assembly.

After the seat belt is unfastened from the tongue plate, the position control ECU assembly lowers the front seat inner belt assembly.

WIRING DIAGRAM

Figure 1. for LHD:

B004TW3E04

Figure 2. for RHD:

B004XW2E03

CAUTION / NOTICE / HINT

Note


  • The easy access buckle system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.

    Click here

  • If DTC B264F is output, repair according to the procedure for B264F first.

    Click here

  • Perform the initialization procedure and stored memory will be reset.

  • Before inspecting parts for malfunctions, inspect the fuses and relays of related systems.

Tech Tips

After replacing the position control ECU assembly, seat assembly and parts (including removal and installation), initialize the position control ECU assembly.

Click here

PROCEDURE


  1. CHECK FRONT POWER SEAT CONTROL SYSTEM


    1. Operate the power seat switch and check that the head rest and pneumatic support function operate normally.

      Click here

      OK
      The head rest and pneumatic support function operate normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO FRONT POWER SEAT CONTROL SYSTEM Click here

    OK

  2. CHECK VEHICLE CONDITION


    1. Check vehicle condition.

      Result
      Proceed to
      for LHD
      for RHD

    for RHD

    READ VALUE USING GTS (FR DOOR COURTESY SW) Click here

    for LHD

  3. READ VALUE USING GTS (FL DOOR COURTESY SW)


    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 / Main Body / Data List.

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


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Door Courtesy SW Front door courtesy light switch assembly LH signal ON/OFF

      OFF: Front door LH closed

      ON: Front door LH open

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      FL Door Courtesy SW
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  4. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH (BUCKLE MOTOR,BUCKLE SWITCH)


    1. Remove the front seat inner belt assembly LH (buckle motor,buckle switch).

      Click here

    2. Inspect the front seat inner belt assembly LH (buckle motor,buckle switch).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH Click here

  5. READ VALUE USING GTS (FR DOOR COURTESY SW)


    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 / Main Body / Data List.

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


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Door Courtesy SW Front door courtesy light switch assembly RH signal ON/OFF

      OFF: Front door RH closed

      ON: Front door RH open

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      FR Door Courtesy SW
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  6. INSPECT FRONT SEAT INNER BELT ASSEMBLY RH (BUCKLE MOTOR,BUCKLE SWITCH)


    1. Remove the front seat inner belt assembly RH (buckle motor,buckle switch).

      Click here

    2. Inspect the front seat inner belt assembly RH (buckle motor,buckle switch).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Click here