REAR POWER SEAT CONTROL SYSTEM One or more Power Seat Motors do not Operate

DESCRIPTION

Signals are input into the position control ECU assembly. The built-in ECU manages the signals received from the position control ECU assembly, and operates each motor and valve control ECU. If the position control ECU assembly receives more than 2 motor operation signals, the motor or valve control ECU is stopped. Manual operation is restarted after the position control ECU assembly receives 1 signal only.

WIRING DIAGRAM


  1. for Rear Seat RH:

    Figure 1. for LHD:

    B006FGVE11
    B006EIGE02

    Figure 2. for RHD:

    B006EHME04

  2. for Rear Seat LH:

    Figure 3. for LHD:

    B006EHME05

    Figure 4. for RHD:

    B006FGVE12
    B006EIGE04

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following procedure.

  • Initializing the position control ECU assembly will clear the seat position memory.

Tech Tips


  • Make sure to initialize the position control ECU assembly after replacing the seat assembly or any related parts (including removal and installation).

  • Before initializing the seat ECU, make sure that the D/C CUT fuse is normal.

  • When any of the following conditions are met, the seat position Information in the position control ECU assembly will be cleared.


    • The engine switch is turned off with any of the seat switches being operated and the D/C CUT fuse removed.

    • The engine switch is turned off within 1 second of any of the seat switches being operated with the D/C CUT fuse removed.

PROCEDURE


  1. CHECK REAR POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the rear power seat switch (rear multi operation panel).

      Click here

      Result
      Result Proceed to
      Rear RH power seat functions do not operate A
      Rear LH power seat functions do not operate B

    B

    CHECK REAR POWER SEAT OPERATION Click here

    A

  2. CHECK REAR POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the rear power seat switch (rear multi operation panel).

      Click here

      Result
      Result Proceed to
      One or more power seat functions do not operate A
      All power seat functions do not operate B

    B

    GO TO OTHER DIAGNOSTIC PROCEDURE Click here

    A

  3. READ VALUE USING GTS (POWER SEAT 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 / Rear Right Seat / Data List.

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


      Body Electrical > Rear Right Seat > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Headrest UP Headrest switch signal (upward) ON or OFF

      ON: Headrest switch (upward) on

      OFF: Headrest switch off

      		 -
      Headrest Down Headrest switch signal (downward) ON or OFF

      ON: Headrest switch (downward) on

      OFF: Headrest switch off

      		 -
      Slide Rear Slide switch signal (rearward) ON or OFF

      ON: Slide switch (rearward) on

      OFF: Slide switch off

      		 -
      Slide Front Slide switch signal (forward) ON or OFF

      ON: Slide switch (forward) on

      OFF: Slide switch off

      		 -
      Ottoman Up ottoman switch signal (upward) ON or OFF

      ON: Ottoman switch (upward) on

      OFF: Ottoman switch off

      		 for LHD
      Ottoman Down Ottoman switch signal (downward) ON or OFF

      ON: Ottoman switch (downward) on

      OFF: Ottoman switch off

      		 for LHD
      Reclining Front Reclining switch signal (forward) ON or OFF

      ON: Reclining switch (forward) on

      OFF: Reclining switch off

      		 for LHD
      Reclining Rear Reclining switch signal (rearward) ON or OFF

      ON: Reclining switch (rearward) on

      OFF: Reclining switch off

      		 for LHD
      Headrest Front/Rear Switch Front Headrest switch signal (forward) ON or OFF

      ON: Headrest switch (forward) on

      OFF: Headrest switch off

      		 -
      Headrest Front/Rear Switch Rear Headrest switch signal (rearward) ON or OFF

      ON: Headrest switch (rearward) on

      OFF: Headrest switch off

      		 -
      Lumbar Switch Front Lumbar support switch signal (forward) ON or OFF

      ON: Lumbar support switch (forward) on

      OFF: Lumbar support switch off

      		 -
      Lumbar Switch Rear Lumbar support switch signal (rearward) ON or OFF

      ON: Lumbar support switch (rearward) on

      OFF: Lumbar support switch off

      		 -
      Lumbar Switch Up Lumbar support switch signal (upward) ON or OFF

      ON: Lumbar support switch (upward) on

      OFF: Lumbar support switch off

      		 -
      Lumbar Switch Down Lumbar support switch signal (downward) ON or OFF

      ON: Lumbar support switch (downward) on

      OFF: Lumbar support switch off

      		 -
      Lower Back Switch Front Lower back switch signal (forward) ON or OFF

      ON: Lower back switch (forward) on

      OFF: Lower back switch off

      		 -
      Lower Back Switch Rear Lower back switch signal (rearward) ON or OFF

      ON: Lower back switch (rearward) on

      OFF: Lower back switch off

      		 -
      Adjustable Seat Switch Front Adjustable seat switch signal (forward) ON or OFF

      ON: Adjustable seat switch (forward) on

      OFF: Adjustable seat switch off

      		 -
      Adjustable Seat Switch Rear Adjustable seat switch signal (rearward) ON or OFF

      ON: Adjustable seat switch (rearward) on

      OFF: Adjustable seat switch off

      		 -
      Front Vertical Switch Up Front vertical switch signal (upward) ON or OFF

      ON: Front vertical switch (upward) on

      OFF: Front vertical switch off

      		 -
      Front Vertical Switch Down Front vertical switch signal (downward) ON or OFF

      ON: Front vertical switch (downward) on

      OFF: Front vertical switch off

      		 -
      Ottoman Short/Long Switch Long Ottoman switch signal (forward) ON or OFF

      ON: Ottoman switch (forward) on

      OFF: Ottoman switch off

      		 for LHD
      Ottoman Short/Long Switch Short Ottoman switch signal (rearward) ON or OFF

      ON: Ottoman switch (rearward) on

      OFF: Ottoman switch off

      		 for LHD

      Body Electrical > Rear Right Seat > Data List
      Tester Display
      Headrest UP
      Headrest Down
      Slide Rear
      Slide Front
      Ottoman Up
      Ottoman Down
      Reclining Front
      Reclining Rear
      Headrest Front/Rear Switch Front
      Headrest Front/Rear Switch Rear
      Lumbar Switch Front
      Lumbar Switch Rear
      Lumbar Switch Up
      Lumbar Switch Down
      Lower Back Switch Front
      Lower Back Switch Rear
      Adjustable Seat Switch Front
      Adjustable Seat Switch Rear
      Front Vertical Switch Up
      Front Vertical Switch Down
      Ottoman Short/Long Switch Long
      Ottoman Short/Long Switch Short
      OK
      ON or OFF is displayed on the GTS according to the table above.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO REAR MULTI OPERATION PANEL SYSTEM Click here

    OK

  4. PERFORM ACTIVE TEST USING GTS (POWER SEAT MOTOR)


    1. Enter the following menus: Body Electrical / Rear Right Seat / Active Test.

    2. Perform the Active Test according to the display on the GTS.


      Body Electrical > Rear Right Seat > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Seat Slide Operation Slide motor operating OFF/Rear/Front -
      Seat Reclining Reclining motor operating OFF/Rear/Front for LHD
      Headrest Operation Headrest up/down motor operating OFF/Down/Up -
      Ottoman Ottoman up/down motor operating OFF/Down/Up for LHD
      Front Vertical Front tilt motor operating OFF/Rear/Front -
      Headrest Front/Rear Headrest front/rear motor operating OFF/Rear/Front -
      Ottoman Short/Long Ottoman long/short motor operating OFF/Long/Short for LHD
      Lumbar Upper Pneumatic support function (lumbar upper) operating OFF/Intake/Exhaust -
      Lumbar Middle Pneumatic support function (lumbar middle) operating OFF/Intake/Exhaust -
      Lumbar Bottom Pneumatic support function (lumbar bottom) operating OFF/Intake/Exhaust -
      Lower Back Pneumatic support function (low back) operating OFF/Intake/Exhaust -
      Adjustable Seat Pneumatic support function (adjustable seat) operating OFF/Intake/Exhaust -

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Seat Slide Operation

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Seat Reclining

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Headrest Operation

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Ottoman

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Front Vertical

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Headrest Front/Rear

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Ottoman Short/Long

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Lumbar Upper

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Lumbar Middle

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Lumbar Bottom

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Lumbar Bottom

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Lower Back

      Body Electrical > Rear Right Seat > Active Test
      Tester Display
      Adjustable Seat
      Result
      Result Proceed to
      The power seat functions operate normally. A
      Slide function, front vertical function or ottoman function (for LHD) does not operate normally. B
      Headrest adjuster function does not operate normally. C
      Reclining function does not operate normally (for LHD). D
      Lumbar support function does not operate normally. E

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY RH Click here

    C

    INSPECT REAR SEAT HEADREST ADJUSTER SUB-ASSEMBLY Click here

    D

    INSPECT REAR SEAT RECLINING ADJUSTER SUB-ASSEMBLY RH Click here

    E

    INSPECT LUMBAR SUPPRT PUMP SUB-ASSEMBLY RH Click here

    B

  5. INSPECT REAR SEAT ADJUSTER ASSEMBLY


    1. for LHD:


      1. Remove the rear No. 2 seat adjuster assembly.

        Click here

      2. Inspect the rear No. 2 seat adjuster assembly.

        Click here

    2. for RHD:


      1. Remove the rear No. 1 seat adjuster assembly.

        Click here

      2. Inspect the rear No. 1 seat adjuster assembly.

        Click here

      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY RH Click here

    B

    REPLACE REAR NO. 2 ADJUSTER ASSEMBLY Click here

    C

    REPLACE REAR NO. 1 SEAT ADJUSTER ASSEMBLY Click here

  6. INSPECT REAR SEAT HEADREST ADJUSTER SUB-ASSEMBLY


    1. for LHD:


      1. Remove the rear No. 2 seat headrest adjuster sub-assembly.

        Click here

      2. Inspect the rear No. 2 seat headrest adjuster sub-assembly.

        Click here

    2. for RHD:


      1. Remove the rear No. 1 seat headrest adjuster sub-assembly.

        Click here

      2. Inspect the rear No. 1 seat headrest adjuster sub-assembly.

        Click here

      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY RH Click here

    B

    REPLACE REAR NO. 2 SEAT HEADREST ADJUSTER SUB-ASSEMBLY Click here

    C

    REPLACE REAR NO. 1 SEAT HEADREST ADJUSTER SUB-ASSEMBLY Click here

  7. INSPECT REAR SEAT RECLINING ADJUSTER SUB-ASSEMBLY RH


    1. Remove rear seat reclining adjuster sub-assembly RH

      Click here

    2. Inspect rear seat reclining adjuster sub-assembly RH

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY RH Click here

    NG

    REPLACE REAR SEAT RECLINING ADJUSTER SUB-ASSEMBLY RH

  8. INSPECT LUMBAR SUPPRT PUMP SUB-ASSEMBLY RH


    1. Remove the lumbar support pump sub-assembly RH.

      Click here

    2. Inspect the lumbar support pump sub-assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE LUMBAR SUPPORT PUMP SUB-ASSEMBLY RH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY RH - LUMBAR SUPPORT PUMP SUB-ASSEMBLY RH)


    1. Disconnect the R6 position control ECU assembly RH connector.

    2. Disconnect the R17 lumbar support pump sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R6-10 (POM) - R17-1 Always Below 1 Ω
      R6-11 (POMG) - R17-2 Always Below 1 Ω
      R6-10 (POM) or R17-1 - Other terminals and body ground Always 10 kΩ or higher
      R6-11 (POMG) or R17-2 - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (SEAT CHECK VALVE - BATTERY AND BODY GROUND)


    1. Disconnect the seatback check with bracket valve RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R11-1 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      R11-3 (SYSB) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY RH - SEAT CHECK VALVE)


    1. Disconnect the R7 position control ECU assembly RH connector.

    2. Disconnect the R11 seatback check with bracket valve RH connector.

    3. Disconnect the R12 NO. 1 seatback check with hose valve RH connector.

    4. Disconnect the T3 NO. 2 seatback check with hose valve RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R7-2 (LINM) - R11-5 (LIN) Always Below 1 Ω
      R7-2 (LINM) or R11-5 (LIN) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK PNEUMATIC SUPPORT FUNCTION Click here
    CHECK PNEUMATIC SUPPORT FUNCTION Click here
    CHECK PNEUMATIC SUPPORT FUNCTION Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. CHECK REAR POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the rear power seat switch (rear multi operation panel).

      Click here

      Result
      Result Proceed to
      One or more power seat functions do not operate A
      All power seat functions do not operate B

    B

    GO TO OTHER DIAGNOSTIC PROCEDURE Click here

    A

  13. READ VALUE USING GTS (POWER SEAT 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 / Rear Left Seat / Data List.

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


      Body Electrical > Rear Left Seat > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Headrest UP Headrest switch signal (upward) ON or OFF

      ON: Headrest switch (upward) on

      OFF: Headrest switch off

      		 -
      Headrest Down Headrest switch signal (downward) ON or OFF

      ON: Headrest switch (downward) on

      OFF: Headrest switch off

      		 -
      Ottoman Up Ottoman switch signal (upward) ON or OFF

      ON: Ottoman switch (upward) on

      OFF: Ottoman switch off

      		 for RHD
      Ottoman Down Ottoman switch signal (downward) ON or OFF

      ON: Ottoman switch (downward) on

      OFF: Ottoman switch off

      		 for RHD
      Reclining Front Reclining switch signal (forward) ON or OFF

      ON: Reclining switch (forward) on

      OFF: Reclining switch off

      		 for RHD
      Reclining Rear Reclining switch signal (rearward) ON or OFF

      ON: Reclining switch (rearward) on

      OFF: Reclining switch off

      		 for RHD
      Headrest Front/Rear Switch Front Headrest switch signal (forward) ON or OFF

      ON: Headrest switch (forward) on

      OFF: Headrest switch off

      		 -
      Headrest Front/Rear Switch Rear Headrest switch signal (rearward) ON or OFF

      ON: Headrest switch (rearward) on

      OFF: Headrest switch off

      		 -
      Lumbar Switch Front Lumbar support switch signal (forward) ON or OFF

      ON: Lumbar support switch (forward) on

      OFF: Lumbar support switch off

      		 -
      Lumbar Switch Rear Lumbar support switch signal (rearward) ON or OFF

      ON: Lumbar support switch (rearward) on

      OFF: Lumbar support switch off

      		 -
      Lumbar Switch Up Lumbar support switch signal (upward) ON or OFF

      ON: Lumbar support switch (upward) on

      OFF: Lumbar support switch off

      		 -
      Lumbar Switch Down Lumbar support switch signal (downward) ON or OFF

      ON: Lumbar support switch (downward) on

      OFF: Lumbar support switch off

      		 -
      Lower Back Switch Front Lower back switch signal (forward) ON or OFF

      ON: Lower back switch (forward) on

      OFF: Lower back switch off

      		 -
      Lower Back Switch Rear Lower back switch signal (rearward) ON or OFF

      ON: Lower back switch (rearward) on

      OFF: Lower back switch off

      		 -
      Adjustable Seat Switch Front Adjustable seat switch signal (forward) ON or OFF

      ON: Adjustable seat switch (forward) on

      OFF: Adjustable seat switch off

      		 -
      Adjustable Seat Switch Rear Adjustable seat switch signal (rearward) ON or OFF

      ON: Adjustable seat switch (rearward) on

      OFF: Adjustable seat switch off

      		 -
      Front Vertical Switch Up Front vertical switch signal (upward) ON or OFF

      ON: Front vertical switch (upward) on

      OFF: Front vertical switch off

      		 -
      Front Vertical Switch Down Front vertical switch signal (downward) ON or OFF

      ON: Front vertical switch (downward) on

      OFF: Front vertical switch off

      		 -
      Ottoman Short/Long Switch Long Ottoman switch signal (forward) ON or OFF

      ON: Ottoman switch (forward) on

      OFF: Ottoman switch off

      		 for RHD
      Ottoman Short/Long Switch Short Ottoman switch signal (rearward) ON or OFF

      ON: Ottoman switch (rearward) on

      OFF: Ottoman switch off

      		 for RHD

      Body Electrical > Rear Left Seat > Data List
      Tester Display
      Headrest UP
      Headrest Down
      Ottoman Up
      Ottoman Down
      Reclining Front
      Reclining Rear
      Headrest Front/Rear Switch Front
      Headrest Front/Rear Switch Rear
      Lumbar Switch Front
      Lumbar Switch Rear
      Lumbar Switch Up
      Lumbar Switch Down
      Lower Back Switch Front
      Lower Back Switch Rear
      Adjustable Seat Switch Front
      Adjustable Seat Switch Rear
      Front Vertical Switch Up
      Front Vertical Switch Down
      Ottoman Short/Long Switch Long
      Ottoman Short/Long Switch Short
      OK
      ON or OFF is displayed on the GTS according to the table above.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO REAR MULTI OPERATION PANEL SYSTEM Click here

    OK

  14. PERFORM ACTIVE TEST USING GTS (POWER SEAT MOTOR)


    1. Enter the following menus: Body Electrical / Rear Right Seat / Active Test.

    2. Perform the Active Test according to the display on the GTS.


      Body Electrical > Rear Left Seat > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Seat Slide Operation Slide motor operating OFF/Rear/Front -
      Seat Reclining Reclining motor operating OFF/Rear/Front for RHD
      Headrest Operation Headrest up/down motor operating OFF/Down/Up -
      Ottoman Ottoman up/down motor operating OFF/Down/Up for RHD
      Front Vertical Front tilt motor operating OFF/Rear/Front -
      Headrest Front/Rear Headrest front/rear motor operating OFF/Rear/Front -
      Ottoman Short/Long Ottoman long/short motor operating OFF/Long/Short for RHD
      Lumbar Upper Pneumatic support function (lumbar upper) operating OFF/Intake/Exhaust -
      Lumbar Middle Pneumatic support function (lumbar middle) operating OFF/Intake/Exhaust -
      Lumbar Bottom Pneumatic support function (lumbar bottom) operating OFF/Intake/Exhaust -
      Lower Back Pneumatic support function (low back) operating OFF/Intake/Exhaust -
      Adjustable Seat Pneumatic support function (adjustable seat) operating OFF/Intake/Exhaust -

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Seat Slide Operation

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Seat Reclining

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Headrest Operation

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Ottoman

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Front Vertical

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Headrest Front/Rear

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Ottoman Short/Long

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Lumbar Upper

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Lumbar Middle

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Lumbar Bottom

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Lower Back

      Body Electrical > Rear Left Seat > Active Test
      Tester Display
      Adjustable Seat
      Result
      Result Proceed to
      The power seat functions operate normally. A
      Slide function, front vertical function or ottoman function (for RHD) does not operate normally. B
      Headrest adjuster function does not operate normally. C
      Reclining function does not operate normally (for RHD). D
      Lumbar support function does not operate normally. E

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY LH Click here

    C

    INSPECT REAR SEAT HEADREST ADJUSTER SUB-ASSEMBLY Click here

    D

    INSPECT REAR SEAT RECLINING ADJUSTER SUB-ASSEMBLY LH Click here

    E

    INSPECT LUMBAR SUPPORT PUMP SUB-ASSEMBLY LH Click here

    B

  15. INSPECT REAR SEAT ADJUSTER ASSEMBLY


    1. for LHD:


      1. Remove the rear No. 1 seat adjuster assembly.

        Click here

      2. Inspect the rear No. 1 seat adjuster assembly.

        Click here

    2. for RHD:


      1. Remove the rear No. 2 seat adjuster assembly.

        Click here

      2. Inspect the rear No. 2 seat adjuster assembly.

        Click here

      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY LH Click here

    B

    REPLACE REAR NO. 1 SEAT ADJUSTER ASSEMBLY Click here

    C

    REPLACE REAR NO. 2 ADJUSTER ASSEMBLY Click here

  16. INSPECT REAR SEAT HEADREST ADJUSTER SUB-ASSEMBLY


    1. for LHD:


      1. Remove the rear No. 1 seat headrest adjuster sub-assembly.

        Click here

      2. Inspect the rear No. 1 seat headrest adjuster sub-assembly.

        Click here

    2. for RHD:


      1. Remove the rear No. 2 seat headrest adjuster sub-assembly.

        Click here

      2. Inspect the rear No. 2 seat headrest adjuster sub-assembly.

        Click here

      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY LH Click here

    B

    REPLACE REAR NO. 2 SEAT HEADREST ADJUSTER SUB-ASSEMBLY Click here

    C

    REPLACE REAR NO. 2 SEAT HEADREST ADJUSTER SUB-ASSEMBLY Click here

  17. INSPECT REAR SEAT RECLINING ADJUSTER SUB-ASSEMBLY LH


    1. Remove rear seat reclining adjuster sub-assembly LH

      Click here

    2. Inspect rear seat reclining adjuster sub-assembly LH

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY LH Click here

    NG

    REPLACE REAR SEAT RECLINING ADJUSTER SUB-ASSEMBLY LH

  18. INSPECT LUMBAR SUPPORT PUMP SUB-ASSEMBLY LH


    1. Remove the lumbar support pump sub-assembly LH.

      Click here

    2. Inspect the lumbar support pump sub-assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE LUMBAR SUPPORT PUMP SUB-ASSEMBLY RH Click here

    OK

  19. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY LH - LUMBAR SUPPORT PUMP SUB-ASSEMBLY LH)


    1. Disconnect the R40 position control ECU assembly LH connector.

    2. Disconnect the R48 lumbar support pump sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R40-10 (POM) - R48-1 Always Below 1 Ω
      R40-11 (POMG) - R48-2 Always Below 1 Ω
      R40-10 (POM) or R48-1 - Other terminals and body ground Always 10 kΩ or higher
      R40-11 (POMG) or R48-2 - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  20. CHECK HARNESS AND CONNECTOR (SEAT CHECK VALVE - BATTERY AND BODY GROUND)


    1. Disconnect the seatback check with bracket valve LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R44-1 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      R44-3 (SYSB) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  21. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY RH - SEAT CHECK VALVE)


    1. Disconnect the R41 position control ECU assembly LH connector.

    2. Disconnect the R44 seatback check with bracket valve LH connector.

    3. Disconnect the R45 NO. 1 seatback check with hose valve LH connector.

    4. Disconnect the T10 NO. 2 seatback check with hose valve LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R41-2 (LINM) - R44-5 (LIN) Always Below 1 Ω
      R41-2 (LINM) or R44-5 (LIN) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK PNEUMATIC SUPPORT FUNCTION Click here
    CHECK PNEUMATIC SUPPORT FUNCTION Click here
    CHECK PNEUMATIC SUPPORT FUNCTION Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR