FRONT POWER SEAT CONTROL SYSTEM Power Seat Power Easy Access System Function does not Operate

DTC Code DTC Name
Power Seat Power Easy Access System Function does not Operate

DESCRIPTION

When the engine switch is off and the 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 with the front seat inner belt assembly LH with the engine switch on (ACC) or on (IG), or the shift lever in P.

WIRING DIAGRAM

B245653E02

CAUTION / NOTICE / HINT

Tip:

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.

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

      Click here

      OK

      Each function of power seat operates normally by using seat switches.

    Result

    Result

    Proceed to

    Power seat functions normally

    A

    All power seat functions do not operate

    B

    One or more power seat motors do not operate

    C

    B

    GO TO PROBLEM SYMPTOMS TABLE (Front Power Seat does not Operate with Front Power Seat Switch)

    C

    GO TO PROBLEM SYMPTOMS TABLE (One or more Power Seat Motors do not Operate)

    A
  2. READ VALUE USING INTELLIGENT TESTER (BUCKLE SWITCH)

    1. Using the intelligent tester, read the Data List

      Click here

      Body Electrical > Driver Seat > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Driver Seat Buckle SW

      Status of driver seat belt

      ON or OFF

      ON: Tongue plate engaged

      OFF: Tongue plate not engaged

      -

      OK

      On intelligent tester screen, item changes between ON and OFF according to above chart.

    Result

    Result

    OK

    NG

    NG

    INSPECT FRONT SEAT INNER BELT ASSEMBLY LHClick here

    OK
  3. CHECK FRONT POWER SEAT SWITCH LH

    1. Temporarily replace the front power seat switch LH with a new or normally functioning one

      Click here

    Result

    Result

    NEXT

    NEXT
  4. CHECK POWER SEAT POWER EASY ACCESS SYSTEM

    1. Check that the power seat power 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.

    Result

    Result

    OK

    NG

    OK

    END (FRONT POWER SEAT SWITCH LH IS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  5. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH

    B199468E14
    1. 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 (RDC) - 2 (E)

      Tongue plate engaged

      Below 1 Ω

      1 (RDC) - 2 (E)

      Tongue plate not engaged

      10 kΩ or higher

    Result

    Result

    OK

    NG

    NG

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

    OK
  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - FRONT SEAT INNER BELT)

    1. Disconnect the b5 switch connector.

    2. Disconnect the b10 inner belt connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      b5-10 (DBCL) - b10-1 (RDC)

      Always

      Below 1 Ω

      b10-2 (E) - Body ground

      Always

      Below 1 Ω

      b5-10 (DBCL) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG

    OK

    REPLACE FRONT POWER SEAT SWITCH LH

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR