REAR POWER SEAT CONTROL SYSTEM Door Open Linked Return Operation does not Occur

DESCRIPTION

With the power switch ON (IG) and the seat memory switch cancel indicator off, when the position control ECU receives a rear door courtesy light switch signal, the following occurs: 1) the slide motor and upper lumbar motor are moved to the rearmost position; 2) the reclining motor* is moved to the foremost position; and 3) the ottoman motor* is moved to the lowermost position.

Tech Tips

*: for Ottoman

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK REAR POWER SEAT CONTROL FUNCTION


    1. Operate the rear power seat switch and check that each power seat function operates normally.

      OK
      Each function operates normally.

    NG

    GO TO PROBLEM SYMPTOMS TABLE Click here

    OK

  2. CHECK REAR SEAT MEMORY FUNCTION


    1. Check if the rear seat memory function operates normally.

      OK
      Memory function operates normally.

    NG

    GO TO PROBLEM SYMPTOMS TABLE Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (SEAT ECU)


    1. Check the Data List for proper functioning of the seat ECU.

      Rear Left Seat
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door OP Link Return Set Door open linked return operation / Permit or Prohibit

      Permit: Memory C switch is OFF

      Prohibit: Memory C switch is ON

      		 -
      RL-Door Courtesy Door courtesy switch signal / ON or OFF

      ON: Rear LH side door is open

      OFF: Rear LH side door is closed

      		 -
      Ignition Switch Power switch status / ON or OFF

      ON: Power switch is ON (IG)

      OFF: Power switch is OFF

      		 -
      Rear Right Seat
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door OP Link Return Set Door open linked return operation / Permit or Prohibit

      Permit: Memory C switch is OFF

      Prohibit: Memory C switch is ON

      		 -
      RR-Door Courtesy Door courtesy switch signal / ON or OFF

      ON: Rear RH side door is open

      OFF: Rear RH side door is closed

      		 -
      Ignition Switch Power switch status / ON or OFF

      ON: Power switch is ON (IG)

      OFF: Power switch is OFF

      		 -
      OK
      On tester screen, each item changes between ON and OFF according to above chart.
      Result
      Result Proceed to
      Rear seat LH normal (except Ottoman) A
      Rear seat LH normal (for Ottoman) B
      Rear seat RH normal (except Ottoman) C
      Rear seat RH normal (for Ottoman) D
      Rear seat LH or RH malfunctioning E

    B

    REPLACE POSITION CONTROL ECU LH Click here

    C

    REPLACE POSITION CONTROL ECU RH Click here

    D

    REPLACE POSITION CONTROL ECU RH Click here

    E

    GO TO LIGHTING SYSTEM Click here

    A

    REPLACE POSITION CONTROL ECU LH Click here