FRONT 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. If the position control ECU assembly receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the position control ECU assembly receives 1 signal only.

WIRING DIAGRAM


  1. for Driver Seat

    Figure 1. for LHD:

    B000P9FE02
    B000TAVE04

    Figure 2. for RHD:

    B000P9FE06
    B000TAVE06

  2. for Front Passenger Seat

    Figure 3. for LHD:

    B000S1VE07
    B000TAVE05

    Figure 4. for RHD:

    B000S1VE08
    B000TAVE04

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

    • The power 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 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

    B

    CHECK FRONT POWER SEAT OPERATION Click here

    A

  2. CHECK FRONT POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the front power seat switch (for Driver Seat).

      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 (Front Power Seat does not Operate with Front Power Seat Switch) Click here

    A

  3. READ VALUE USING GTS (POWER SEAT SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.


      Body Electrical > Driver Seat > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Reclining Rear Reclining switch signal (Rearward) ON or OFF

      ON: Reclining switch (Rearward) on

      OFF: Reclining switch (Rearward) off

      		 -
      Reclining Front Reclining switch signal (Forward) ON or OFF

      ON: Reclining switch (Forward) on

      OFF: Reclining switch (Forward) off

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

      ON: Front vertical switch (Downward) on

      OFF: Front vertical switch (Downward) off

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

      ON: Front vertical switch (Upward) on

      OFF: Front vertical switch (Upward) off

      		 -
      Lifter Switch Down Lifter switch signal (Downward) ON or OFF

      ON: Lifter switch (Downward) on

      OFF: Lifter switch (Downward) off

      		 -
      Lifter Switch Up Lifter switch signal (Upward) ON or OFF

      ON: Lifter switch (Upward) on

      OFF: Lifter switch (Upward) off

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

      ON: Slide switch (Rearward) on

      OFF: Slide switch (Rearward) off

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

      ON: Slide switch (Forward) on

      OFF: Slide switch (Forward) off

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

      ON: Lumbar support adjuster switch (Forward) on

      OFF: Lumbar support adjuster switch (Forward) off

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

      ON: Lumbar support adjuster switch (Rearward) on

      OFF: Lumbar support adjuster switch (Rearward) off

      		 -
      Headrest Switch UP Headrest switch signal (Upward) ON or OFF

      ON: Headrest switch (Upward) on

      OFF: Headrest switch (Upward) off

      		 for Standard Seat Type
      Headrest Switch Down Headrest switch signal (Rearward) ON or OFF

      ON: Headrest switch (Downward) on

      OFF: Headrest switch (Downward) off

      		 for Standard Seat Type

      Body Electrical > Driver Seat > Data List
      Tester Display
      Reclining Rear
      Reclining Front
      Front Vertical Down
      Front Vertical Up
      Lifter Switch Down
      Lifter Switch Up
      Slide Rear
      Slide Front
      Lumbar Switch Front
      Lumbar Switch Rear
      Headrest Switch UP
      Headrest Switch Down
      OK
      ON or OFF is displayed on the GTS according to the table above.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

  4. INSPECT FRONT POWER SEAT SWITCH (FOR DRIVER SEAT)


    1. Remove the front power seat switch (for Driver Seat).

      Click here

    2. Inspect the front power seat switch (for Driver Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER SEAT) Click here

    OK

  5. CHECK HARNESS OR CONNECTOR (POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) - FRONT POWER SEAT SWITCH (FOR DRIVER SEAT))


    1. for LHD:


      1. Disconnect the w12 position control ECU assembly LH connector.

      2. Disconnect the w4 front power saet switch LH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        w12-23 (SLDR) - w4-6 (SLDR) Always Below 1 Ω
        w12-23 (SLDR) or w4-6 (SLDR) - Other terminals and body ground Always 10 kΩ or higher
        w12-9 (SLDF) - w4-7 (SLDF) Always Below 1 Ω
        w12-9 (SLDF) or w4-7 (SLDF) - Other terminals and body ground Always 10 kΩ or higher
        w12-22 (RCLR) - w4-1 (RCLR) Always Below 1 Ω
        w12-22 (RCLR) or w4-1 (RCLR) - Other terminals and body ground Always 10 kΩ or higher
        w12-8 (RCLF) - w4-2 (RCLF) Always Below 1 Ω
        w12-8 (RCLF) or w4-2 (RCLF) - Other terminals and body ground Always 10 kΩ or higher
        w12-6 (FRVU) - w4-4 (FUP) Always Below 1 Ω
        w12-6 (FRVU) or w4-4 (FUP) - Other terminals and body ground Always 10 kΩ or higher
        w12-20 (FRVD) - w4-5 (FDWN) Always Below 1 Ω
        w12-20 (FRVD) or w4-5 (FDWN) - Other terminals and body ground Always 10 kΩ or higher
        w12-7 (LFTU) - w4-3 (LUP) Always Below 1 Ω
        w12-7 (LFTU) or w4-3 (LUP) - Other terminals and body ground Always 10 kΩ or higher
        w12-21 (LFTD) - w4-8 (LDWN) Always Below 1 Ω
        w12-21 (LFTD) or w4-8 (LDWN) - Other terminals and body ground Always 10 kΩ or higher
        w12-4 (LFLF) - w4-14 (H) Always Below 1 Ω
        w12-4 (LFLF) or w4-14 (H) - Other terminals and body ground Always 10 kΩ or higher
        w12-18 (LFLR) - w4-17 (R) Always Below 1 Ω
        w12-18 (LFLR) or w4-17 (R) - Other terminals and body ground Always 10 kΩ or higher
        w12-5 (HEDU) - w4-15 (HUP)* Always Below 1 Ω
        w12-5 (HEDU) or w4-15 (HUP) - Other terminals and body ground* Always 10 kΩ or higher
        w12-19 (HEDD) - w4-16 (HDWN)* Always Below 1 Ω
        w12-19 (HEDD) or w4-16 (HDWN)* - Other terminals and body ground Always 10 kΩ or higher

        • *: for Standard Seat Type

    2. for RHD:


      1. Disconnect the v12 position control ECU assembly RH connector.

      2. Disconnect the v4 front power saet switch RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        v12-23 (SLDR) - v4-5 (SLDR) Always Below 1 Ω
        v12-23 (SLDR) or v4-5 (SLDR) - Other terminals and body ground Always 10 kΩ or higher
        v12-9 (SLDF) - v4-4 (SLDF) Always Below 1 Ω
        v12-9 (SLDF) or v4-4 (SLDF) - Other terminals and body ground Always 10 kΩ or higher
        v12-22 (RCLR) - v4-10 (RCLR) Always Below 1 Ω
        v12-22 (RCLR) or v4-10 (RCLR) - Other terminals and body ground Always 10 kΩ or higher
        v12-8 (RCLF) - v4-9 (RCLF) Always Below 1 Ω
        v12-8 (RCLF) or v4-9 (RCLF) - Other terminals and body ground Always 10 kΩ or higher
        v12-6 (FRVU) - v4-7 (FUP) Always Below 1 Ω
        v12-6 (FRVU) or v4-7 (FUP) - Other terminals and body ground Always 10 kΩ or higher
        v12-20 (FRVD) - v4-6 (FDWN) Always Below 1 Ω
        v12-20 (FRVD) or v4-6 (FDWN) - Other terminals and body ground Always 10 kΩ or higher
        v12-7 (LFTU) - v4-8 (LUP) Always Below 1 Ω
        v12-7 (LFTU) or v4-8 (LUP) - Other terminals and body ground Always 10 kΩ or higher
        v12-21 (LFTD) - v4-3 (LDWN) Always Below 1 Ω
        v12-21 (LFTD) or v4-3 (LDWN) - Other terminals and body ground Always 10 kΩ or higher
        v12-4 (LFLF) - v4-17 (H) Always Below 1 Ω
        v12-4 (LFLF) or v4-17 (H) - Other terminals and body ground Always 10 kΩ or higher
        v12-18 (LFLR) - v4-14 (R) Always Below 1 Ω
        v12-18 (LFLR) or v4-14 (R) - Other terminals and body ground Always 10 kΩ or higher
        v12-5 (HEDU) - v4-16 (HUP)* Always Below 1 Ω
        v12-5 (HEDU) or v4-16 (HUP) - Other terminals and body ground* Always 10 kΩ or higher
        v12-19 (HEDD) - v4-15 (HDWN)* Always Below 1 Ω
        v12-19 (HEDD) or v4-15 (HDWN)* - Other terminals and body ground Always 10 kΩ or higher

        • *: for Standard Seat Type

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) - POWER SEAT MOTOR)


    1. for LHD:


      1. Disconnect the w10 and w11 position control ECU assembly LH connector.

      2. Disconnect the w1 front seat adjuster assembly LH (slide motor) connector.

      3. Disconnect the w2 power seat tilt motor assembly LH connector.

      4. Disconnect the w3 power seat lifter motor assembly LH connector.

      5. Disconnect the y2 front seatback frame sub-assembly LH (reclining motor) connector.

      6. Disconnect the y5 front seat headrest assembly LH connector. (for Standard Seat Type)

      7. Disconnect the y3 lumbar support adjuster assembly LH connector.

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

        Standard Resistance
        Slide Motor
        Tester Condition Condition Specified Condition
        w10-1 (SLD+) - w1-4 Always Below 1 Ω
        w10-1 (SLD+) or w1-4 - Other terminals and body ground Always 10 kΩ or higher
        w10-5 (SLD-) - w1-1 Always Below 1 Ω
        w10-5 (SLD-) or w1-1 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Tilt Motor Assembly LH
        Tester Condition Condition Specified Condition
        w10-7 (FRV+) - w2-1 Always Below 1 Ω
        w10-7 (FRV+) or w2-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-4 (FRV-) - w2-4 Always Below 1 Ω
        w11-4 (FRV-) or w2-4 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Lifter Motor Assembly LH
        Tester Condition Condition Specified Condition
        w10-6 (LFT+) - w3-1 Always Below 1 Ω
        w10-6 (LFT+) or w3-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-5 (LFT-) - w3-4 Always Below 1 Ω
        w11-5 (LFT-) or w3-4 - Other terminals and body ground Always 10 kΩ or higher
        Reclining Motor
        Tester Condition Condition Specified Condition
        w10-10 (RCL+) - y2-1 Always Below 1 Ω
        w10-10 (RCL+) or y2-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-6 (RCL-) - y2-4 Always Below 1 Ω
        w11-6 (RCL-) or y2-4 - Other terminals and body ground Always 10 kΩ or higher
        Headrest Motor (for Standard Seat Type)
        Tester Condition Condition Specified Condition
        w10-4 (H+) - y5-1 Always Below 1 Ω
        w10-4 (H+) or y5-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-2 (H-) - y5-4 Always Below 1 Ω
        w11-2 (H-) or y5-4 - Other terminals and body ground Always 10 kΩ or higher
        Lumbar Support Adjuster Assembly LH
        Tester Condition Condition Specified Condition
        w10-9 (L+) - y3-1 Always Below 1 Ω
        w10-9 (L+) or y3-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-3 (L-) - y3-2 Always Below 1 Ω
        w11-3 (L-) or y3-2 - Other terminals and body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the v10 and v11 position control ECU assembly RH connector.

      2. Disconnect the v1 front seat adjuster assembly RH (slide motor) connector.

      3. Disconnect the v19 power seat tilt motor assembly RH connector.

      4. Disconnect the v2 power seat lifter motor assembly RH connector.

      5. Disconnect the x2 front seatback frame sub-assembly RH (reclining motor) connector.

      6. Disconnect the x5 front seat headrest assembly RH connector (for Standard Seat Type).

      7. Disconnect the x3 lumbar support adjuster assembly RH connector.

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

        Standard Resistance
        Slide Motor
        Tester Condition Condition Specified Condition
        v10-1 (SLD+) - v1-4 Always Below 1 Ω
        v10-1 (SLD+) or v1-4 - Other terminals and body ground Always 10 kΩ or higher
        v10-5 (SLD-) - v1-1 Always Below 1 Ω
        v10-5 (SLD-) or v1-1 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Tilt Motor Assembly RH
        Tester Condition Condition Specified Condition
        v10-7 (FRV+) - v19-1 Always Below 1 Ω
        v10-7 (FRV+) or v19-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-4 (FRV-) - v19-4 Always Below 1 Ω
        v11-4 (FRV-) or v19-4 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Lifter Motor Assembly RH
        Tester Condition Condition Specified Condition
        v10-6 (LFT+) - v2-1 Always Below 1 Ω
        v10-6 (LFT+) or v2-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-5 (LFT-) - v2-4 Always Below 1 Ω
        v11-5 (LFT-) or v2-4 - Other terminals and body ground Always 10 kΩ or higher
        Reclining Motor
        Tester Condition Condition Specified Condition
        v10-10 (RCL+) - x2-1 Always Below 1 Ω
        v10-10 (RCL+) or x2-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-6 (RCL-) - x2-4 Always Below 1 Ω
        v11-6 (RCL-) or x2-4 - Other terminals and body ground Always 10 kΩ or higher
        Headrest Motor (for Standard Seat Type)
        Tester Condition Condition Specified Condition
        v10-4 (H+) - x5-1 Always Below 1 Ω
        v10-4 (H+) or x5-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-2 (H-) - x5-4 Always Below 1 Ω
        v11-2 (H-) or x5-4 - Other terminals and body ground Always 10 kΩ or higher
        Lumbar Support Adjuster Assembly RH
        Tester Condition Condition Specified Condition
        v10-9 (L+) - x3-1 Always Below 1 Ω
        v10-9 (L+) or x3-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-3 (L-) - x3-2 Always Below 1 Ω
        v11-3 (L-) or x3-2 - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

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


      Body Electrical > Driver Seat > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Seat Reclining Seat reclining operation OFF/Rear/Front -
      Front Vertical Operation Seat front vertical operation OFF/Down/Up -
      Lifter Operation Seat lifter operation OFF/Down/Up -
      Seat Slide Operation Seat slide operation OFF/Rear/Front -
      Lumbar Slide Lumbar support operation OFF/Rear/Front -
      Headrest Operation Headrest operation OFF/Down/Up for Standard Seat Type

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Seat Reclining

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Front Vertical Operation

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Lifter Operation

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Seat Slide Operation

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Lumbar Slide

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Headrest Operation
      Result
      Result Proceed to
      The power seat functions operate normally. A
      Slide function does not operate normally. B
      Front vertical function does not operate normally. C
      Rear lifter function does not operate normally. D
      Reclining function does not operate normally. E
      Headrest adjuster function does not operate normally. (for Standard Seat Type) F
      Lumbar support function does not operate normally. G

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    C

    INSPECT POWER SEAT TILT MOTOR ASSEMBLY (FOR DRIVER SEAT) Click here

    D

    INSPECT POWER SEAT LIFTER MOTOR ASSEMBLY (FOR DRIVER SEAT) Click here

    E

    INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR DRIVER SEAT) (RECLINING MOTOR) Click here

    F

    INSPECT FRONT SEAT HEADREST ASSEMBLY (FOR DRIVER SEAT) (HEADREST MOTOR) Click here

    G

    INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY (FOR DRIVER SEAT) Click here

    B

  8. INSPECT FRONT SEAT ADJUSTER ASSEMBLY (FOR DRIVER SEAT) (SLIDE MOTOR)


    1. Remove the front seat adjuster assembly (for Driver Seat).

      Click here

    2. Inspect the front seat adjuster assembly (for Driver Seat) (slide motor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

    REPLACE FRONT SEAT ADJUSTER ASSEMBLY (FOR DRIVER SEAT) Click here

  9. INSPECT POWER SEAT TILT MOTOR ASSEMBLY (FOR DRIVER SEAT)


    1. Remove the power seat tilt motor assembly (for Driver Seat).

      Click here

    2. Inspect the power seat tilt motor assembly (for Driver Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

    REPLACE POWER SEAT TILT MOTOR ASSEMBLY (FOR DRIVER SEAT) Click here

  10. CHECK FRONT POWER SEAT OPERATION


    1. Check that each function of the power seat operates normally by using the front power seat switch (for Front Passenger Seat).

      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 (Front Power Seat does not Operate with Front Power Seat Switch) Click here

    A

  11. READ VALUE USING GTS (POWER SEAT SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.


      Body Electrical > Passenger Seat > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Reclining Rear Reclining switch signal (Rearward) ON or OFF

      ON: Reclining switch (Rearward) on

      OFF: Reclining switch (Rearward) off

      		 -
      Reclining Front Reclining switch signal (Forward) ON or OFF

      ON: Reclining switch (Forward) on

      OFF: Reclining switch (Forward) off

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

      ON: Front vertical switch (Downward) on

      OFF: Front vertical switch (Downward) off

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

      ON: Front vertical switch (Upward) on

      OFF: Front vertical switch (Upward) off

      		 -
      Lifter Switch Down Lifter switch signal (Downward) ON or OFF

      ON: Lifter switch (Downward) on

      OFF: Lifter switch (Downward) off

      		 -
      Lifter Switch Up Lifter switch signal (Upward) ON or OFF

      ON: Lifter switch (Upward) on

      OFF: Lifter switch (Upward) off

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

      ON: Slide switch (Rearward) on

      OFF: Slide switch (Rearward) off
      Slide Front Slide switch signal (Forward) ON or OFF

      ON: Slide switch (Forward) on

      OFF: Slide switch (Forward) off

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

      ON: Lumbar support adjuster switch (Forward) on

      OFF: Lumbar support adjuster switch (Forward) off

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

      ON: Lumbar support adjuster switch (Rearward) on

      OFF: Lumbar support adjuster switch (Rearward) off

      		 -
      Headrest Switch UP Headrest switch signal (Upward) ON or OFF

      ON: Headrest switch (Upward) on

      OFF: Headrest switch (Upward) off

      		 for Standard Seat Type
      Headrest Switch Down Headrest switch signal (Rearward) ON or OFF

      ON: Headrest switch (Downward) on

      OFF: Headrest switch (Downward) off

      		 for Standard Seat Type
      OK
      ON or OFF is displayed on the GTS according to the table above.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  12. INSPECT FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER SEAT)


    1. Remove the front power seat switch (for Front Passenger Seat).

      Click here

    2. Inspect the front power seat switch (for Front Passenger Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER SEAT) Click here

    OK

  13. CHECK HARNESS OR CONNECTOR (POSITION CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SEAT) - FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER SEAT))


    1. for LHD:


      1. Disconnect the v12 position control ECU assembly RH connector.

      2. Disconnect the v4 front power saet switch RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        v12-23 (SLDR) - v4-5 (SLDR) Always Below 1 Ω
        v12-23 (SLDR) or v4-5 (SLDR) - Other terminals and body ground Always 10 kΩ or higher
        v12-9 (SLDF) - v4-4 (SLDF) Always Below 1 Ω
        v12-9 (SLDF) or v4-4 (SLDF) - Other terminals and body ground Always 10 kΩ or higher
        v12-22 (RCLR) - v4-10 (RCLR) Always Below 1 Ω
        v12-22 (RCLR) or v4-10 (RCLR) - Other terminals and body ground Always 10 kΩ or higher
        v12-8 (RCLF) - v4-9 (RCLF) Always Below 1 Ω
        v12-8 (RCLF) or v4-9 (RCLF) - Other terminals and body ground Always 10 kΩ or higher
        v12-6 (FRVU) - v4-7 (FUP) Always Below 1 Ω
        v12-6 (FRVU) or v4-7 (FUP) - Other terminals and body ground Always 10 kΩ or higher
        v12-20 (FRVD) - v4-6 (FDWN) Always Below 1 Ω
        v12-20 (FRVD) or v4-6 (FDWN) - Other terminals and body ground Always 10 kΩ or higher
        v12-7 (LFTU) - v4-8 (LUP) Always Below 1 Ω
        v12-7 (LFTU) or v4-8 (LUP) - Other terminals and body ground Always 10 kΩ or higher
        v12-21 (LFTD) - v4-3 (LDWN) Always Below 1 Ω
        v12-21 (LFTD) or v4-3 (LDWN) - Other terminals and body ground Always 10 kΩ or higher
        v12-4 (LFLF) - v4-17 (H) Always Below 1 Ω
        v12-4 (LFLF) or v4-17 (H) - Other terminals and body ground Always 10 kΩ or higher
        v12-18 (LFLR) - v4-14 (R) Always Below 1 Ω
        v12-18 (LFLR) or v4-14 (R) - Other terminals and body ground Always 10 kΩ or higher
        v12-5 (HEDU) - v4-16 (HUP)* Always Below 1 Ω
        v12-5 (HEDU) or v4-16 (HUP) - Other terminals and body ground* Always 10 kΩ or higher
        v12-19 (HEDD) - v4-15 (HDWN)* Always Below 1 Ω
        v12-19 (HEDD) or v4-15 (HDWN)* - Other terminals and body ground Always 10 kΩ or higher

        • *: for Standard Seat Type

    2. for RHD:


      1. Disconnect the w12 position control ECU assembly LH connector.

      2. Disconnect the w4 front power saet switch LH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        w12-23 (SLDR) - w4-6 (SLDR) Always Below 1 Ω
        w12-23 (SLDR) or w4-6 (SLDR) - Other terminals and body ground Always 10 kΩ or higher
        w12-9 (SLDF) - w4-7 (SLDF) Always Below 1 Ω
        w12-9 (SLDF) or w4-7 (SLDF) - Other terminals and body ground Always 10 kΩ or higher
        w12-22 (RCLR) - w4-1 (RCLR) Always Below 1 Ω
        w12-22 (RCLR) or w4-1 (RCLR) - Other terminals and body ground Always 10 kΩ or higher
        w12-8 (RCLF) - w4-2 (RCLF) Always Below 1 Ω
        w12-8 (RCLF) or w4-2 (RCLF) - Other terminals and body ground Always 10 kΩ or higher
        w12-6 (FRVU) - w4-4 (FUP) Always Below 1 Ω
        w12-6 (FRVU) or w4-4 (FUP) - Other terminals and body ground Always 10 kΩ or higher
        w12-20 (FRVD) - w4-5 (FDWN) Always Below 1 Ω
        w12-20 (FRVD) or w4-5 (FDWN) - Other terminals and body ground Always 10 kΩ or higher
        w12-7 (LFTU) - w4-3 (LUP) Always Below 1 Ω
        w12-7 (LFTU) or w4-3 (LUP) - Other terminals and body ground Always 10 kΩ or higher
        w12-21 (LFTD) - w4-8 (LDWN) Always Below 1 Ω
        w12-21 (LFTD) or w4-8 (LDWN) - Other terminals and body ground Always 10 kΩ or higher
        w12-4 (LFLF) - w4-14 (H) Always Below 1 Ω
        w12-4 (LFLF) or w4-14 (H) - Other terminals and body ground Always 10 kΩ or higher
        w12-18 (LFLR) - w4-17 (R) Always Below 1 Ω
        w12-18 (LFLR) or w4-17 (R) - Other terminals and body ground Always 10 kΩ or higher
        w12-5 (HEDU) - w4-15 (HUP)* Always Below 1 Ω
        w12-5 (HEDU) or w4-15 (HUP) - Other terminals and body ground* Always 10 kΩ or higher
        w12-19 (HEDD) - w4-16 (HDWN)* Always Below 1 Ω
        w12-19 (HEDD) or w4-16 (HDWN)* - Other terminals and body ground Always 10 kΩ or higher

        • *: for Standard Seat Type

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SEAT) - POWER SEAT MOTOR)


    1. for LHD:


      1. Disconnect the v10 and v11 position control ECU assembly RH connector.

      2. Disconnect the v1 front seat adjuster assembly RH (slide motor) connector.

      3. Disconnect the v3 power seat tilt motor assembly RH connector.

      4. Disconnect the v2 power seat lifter motor assembly RH connector.

      5. Disconnect the x2 front seatback frame sub-assembly RH (reclining motor) connector.

      6. Disconnect the x5 front seat headrest assembly RH connector. (for Standard Seat Type)

      7. Disconnect the x3 lumbar support adjuster assembly RH connector.

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

        Standard Resistance
        Slide Motor
        Tester Condition Condition Specified Condition
        v10-1 (SLD+) - v1-4 Always Below 1 Ω
        v10-1 (SLD+) or v1-4 - Other terminals and body ground Always 10 kΩ or higher
        v10-5 (SLD-) - v1-1 Always Below 1 Ω
        v10-5 (SLD-) or v1-1 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Tilt Motor Assembly RH
        Tester Condition Condition Specified Condition
        v10-7 (FRV+) - v3-1 Always Below 1 Ω
        v10-7 (FRV+) or v3-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-4 (FRV-) - v3-2 Always Below 1 Ω
        v11-4 (FRV-) or v3-2 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Lifter Motor Assembly RH
        Tester Condition Condition Specified Condition
        v10-6 (LFT+) - v2-1 Always Below 1 Ω
        v10-6 (LFT+) or v2-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-5 (LFT-) - v2-4 Always Below 1 Ω
        v11-5 (LFT-) or v2-4 - Other terminals and body ground Always 10 kΩ or higher
        Reclining Motor
        Tester Condition Condition Specified Condition
        v10-10 (RCL+) - x2-1 Always Below 1 Ω
        v10-10 (RCL+) or x2-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-6 (RCL-) - x2-4 Always Below 1 Ω
        v11-6 (RCL-) or x2-4 - Other terminals and body ground Always 10 kΩ or higher
        Headrest Motor (for Standard Seat Type)
        Tester Condition Condition Specified Condition
        v10-4 (H+) - x5-1 Always Below 1 Ω
        v10-4 (H+) or x5-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-2 (H-) - x5-4 Always Below 1 Ω
        v11-2 (H-) or x5-4 - Other terminals and body ground Always 10 kΩ or higher
        Lumbar Support Adjuster Assembly RH
        Tester Condition Condition Specified Condition
        v10-9 (L+) - x3-1 Always Below 1 Ω
        v10-9 (L+) or x3-1 - Other terminals and body ground Always 10 kΩ or higher
        v11-3 (L-) - x3-2 Always Below 1 Ω
        v11-3 (L-) or x3-2 - Other terminals and body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the w10 and w11 position control ECU assembly LH connector.

      2. Disconnect the w1 front seat adjuster assembly LH (slide motor) connector.

      3. Disconnect the w16 power seat tilt motor assembly LH connector.

      4. Disconnect the w3 power seat lifter motor assembly LH connector.

      5. Disconnect the y2 front seatback frame sub-assembly LH (reclining motor) connector.

      6. Disconnect the y5 front seat headrest assembly LH connector. (for Standard Seat Type)

      7. Disconnect the y3 lumbar support adjuster assembly LH connector.

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

        Standard Resistance
        Slide Motor
        Tester Condition Condition Specified Condition
        w10-1 (SLD+) - w1-4 Always Below 1 Ω
        w10-1 (SLD+) or w1-4 - Other terminals and body ground Always 10 kΩ or higher
        w10-5 (SLD-) - w1-1 Always Below 1 Ω
        w10-5 (SLD-) or w1-1 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Tilt Motor Assembly LH
        Tester Condition Condition Specified Condition
        w10-7 (FRV+) - w16-1 Always Below 1 Ω
        w10-7 (FRV+) or w16-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-4 (FRV-) - w16-2 Always Below 1 Ω
        w11-4 (FRV-) or w16-2 - Other terminals and body ground Always 10 kΩ or higher
        Power Seat Lifter Motor Assembly LH
        Tester Condition Condition Specified Condition
        w10-6 (LFT+) - w3-1 Always Below 1 Ω
        w10-6 (LFT+) or w3-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-5 (LFT-) - w3-4 Always Below 1 Ω
        w11-5 (LFT-) or w3-4 - Other terminals and body ground Always 10 kΩ or higher
        Reclining Motor
        Tester Condition Condition Specified Condition
        w10-10 (RCL+) - y2-1 Always Below 1 Ω
        w10-10 (RCL+) or y2-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-6 (RCL-) - y2-4 Always Below 1 Ω
        w11-6 (RCL-) or y2-4 - Other terminals and body ground Always 10 kΩ or higher
        Headrest Motor (for Standard Seat Type)
        Tester Condition Condition Specified Condition
        w10-4 (H+) - y5-1 Always Below 1 Ω
        w10-4 (H+) or y5-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-2 (H-) - y5-4 Always Below 1 Ω
        w11-2 (H-) or y5-4 - Other terminals and body ground Always 10 kΩ or higher
        Lumbar Support Adjuster Assembly LH
        Tester Condition Condition Specified Condition
        w10-9 (L+) - y3-1 Always Below 1 Ω
        w10-9 (L+) or y3-1 - Other terminals and body ground Always 10 kΩ or higher
        w11-3 (L-) - y3-2 Always Below 1 Ω
        w11-3 (L-) or y3-2 - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

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


      Body Electrical > Passenger Seat > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Seat Reclining Seat reclining operation OFF/Rear/Front -
      Front Vertical Operation Seat front vertical operation OFF/Down/Up -
      Lifter Operation Seat lifter operation OFF/Down/Up -
      Seat Slide Operation Seat slide operation OFF/Rear/Front -
      Lumbar Slide Lumbar support operation OFF/Rear/Front -
      Headrest Operation Headrest operation OFF/Down/Up for Standard Seat Type

      Body Electrical > Passenger Seat > Active Test
      Tester Display
      Lifter Operation

      Body Electrical > Passenger Seat > Active Test
      Tester Display
      Seat Reclining

      Body Electrical > Passenger Seat > Active Test
      Tester Display
      Front Vertical Operation

      Body Electrical > Passenger Seat > Active Test
      Tester Display
      Seat Slide Operation

      Body Electrical > Passenger Seat > Active Test
      Tester Display
      Lumbar Slide

      Body Electrical > Passenger Seat > Active Test
      Tester Display
      Headrest Operation
      Result
      Result Proceed to
      The power seat functions operate normally. A
      Slide function does not operate normally. B
      Front vertical function does not operate normally. C
      Rear lifter function does not operate normally. D
      Reclining function does not operate normally. E
      Headrest adjuster function does not operate normally. (for Standard Seat Type) F
      Lumbar support function does not operate normally. G

    A

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

    B

    INSPECT FRONT SEAT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER SEAT) (SLIDE MOTOR) Click here

    C

    INSPECT POWER SEAT TILT MOTOR ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

    D

    INSPECT POWER SEAT LIFTER MOTOR ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

    E

    INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR FRONT PASSENGER SEAT) (RECLINING MOTOR) Click here

    F

    INSPECT FRONT SEAT HEADREST ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

    G

    INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

  16. INSPECT POWER SEAT LIFTER MOTOR ASSEMBLY (FOR DRIVER SEAT)


    1. Remove the power seat lifter motor assembly (for Driver Seat).

      Click here

    2. Inspect the power seat lifter motor assembly (for Driver Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

    REPLACE POWER SEAT LIFTER MOTOR ASSEMBLY (FOR DRIVER SEAT) Click here

  17. INSPECT FRONT SEAT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER SEAT) (SLIDE MOTOR)


    1. Remove the front seat adjuster assembly (for Front Passenger Seat).

      Click here

    2. Inspect the front seat adjuster assembly (for Front Passenger Seat) (slide motor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE FRONT SEAT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

  18. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR DRIVER SEAT) (RECLINING MOTOR)


    1. Remove the front seatback frame sub-assembly (for Driver Seat).

      Click here

    2. Inspect the front seatback frame sub-assembly (for Driver Seat) (recling motor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

    REPLACE FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR DRIVER SEAT) Click here

  19. INSPECT POWER SEAT TILT MOTOR ASSEMBLY (FOR FRONT PASSENGER SEAT)


    1. Remove the power seat tilt motor assembly (for Front Passenger Seat).

      Click here

    2. Inspect the power seat tilt motor assembly (for Front Passenger Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE POWER SEAT TILT MOTOR ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

  20. INSPECT FRONT SEAT HEADREST ASSEMBLY (FOR DRIVER SEAT) (HEADREST MOTOR)


    1. Remove the front seat headrest assembly (for Driver Seat).

      Click here

    2. Inspect the front seat headrest assembly (for Driver Seat) (headrest motor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

    REPLACE FRONT SEAT HEADREST ASSEMBLY (FOR DRIVER SEAT) Click here

  21. INSPECT POWER SEAT LIFTER MOTOR ASSEMBLY (FOR FRONT PASSENGER SEAT)


    1. Remove the power seat lifter motor assembly (for Front Passenger Seat).

      Click here

    2. Inspect the power seat lifter motor assembly (for Front Passenger Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE POWER SEAT LIFTER MOTOR ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

  22. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY (FOR DRIVER SEAT)


    1. Remove the lumbar support adjuster assembly (for Driver Seat).

      Click here

    2. Inspect the lumbar support adjuster assembly (for Driver Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (FOR DRIVER SEAT) Click here

    NG

    REPLACE LUMBAR SUPPORT ADJUSTER ASSEMBLY (FOR DRIVER SEAT) Click here

  23. INSPECT FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR FRONT PASSENGER SEAT) (RECLINING MOTOR)


    1. Remove the front seatback frame sub-assembly (for Front Passenger Seat).

      Click here

    2. Inspect the front seatback frame sub-assembly (for Front Passenger Seat) (recling motor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

  24. INSPECT FRONT SEAT HEADREST ASSEMBLY (FOR FRONT PASSENGER SEAT)


    1. Remove the front seat headrest assembly (for Front Passenger Seat).

      Click here

    2. Inspect the front seat headrest assembly (for Front Passenger Seat) (headrest motor).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE FRONT SEAT HEADREST ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here

  25. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER SEAT)


    1. Remove the lumbar support adjuster assembly (for Front Passenger Seat).

      Click here

    2. Inspect the lumbar support adjuster assembly (for Front Passenger Seat).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE LUMBAR SUPPORT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER SEAT) Click here