FRONT POWER SEAT CONTROL SYSTEM (w/ Memory) One or more Power Seat Motors do not Operate

DESCRIPTION

When a signal is input into the position control ECU, the ECU manages the signals received from the front power seat switch, and operates each motor. If the front power seat switch receives more than 2 motor operation signals, the motor is stopped. Manual operation is restarted after the front power seat switch receives 1 signal only.

WIRING DIAGRAM

A01NGMCE01
A01NFCCE01

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Use the intelligent tester to check if the CAN communication system is functioning normally Click here.

      OK
      CAN communication DTC is not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. 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.

      Result
      Result Proceed to
      Some front driver side seat motors do not operate. A
      Some front passenger side seat motors do not operate. B

    B

    READ VALUE USING INTELLIGENT TESTER Click here

    A

  3. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Driver Seat / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Driver Seat
      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 Sliding switch signal (Rearward) / ON or OFF

      ON: Sliding switch (Rearward) on

      OFF: Sliding switch (Rearward) off

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

      ON: Sliding switch (Forward) on

      OFF: Sliding switch (Forward) off

      		 -
      OK
      ON or OFF is displayed on the intelligent tester according to the table above.

    NG

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH POWER SOURCE) Click here

    OK

  4. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


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

    2. Perform the Active Test according to the display on the intelligent tester.

      Driver Seat
      Tester Display Test Part Control Range Diagnostic Note
      Seat Reclining Seat reclining operation Front / OFF / Rear -
      Front Vertical Operation Seat front vertical operation Up / OFF / Down -
      Lifter Operation Seat lifter operation Up / OFF / Down -
      Seat Slide Operation Seat sliding operation Front / OFF / Rear -
      Result
      Result Proceed to
      The power seat motors operate normally A
      Front vertical, lifter or reclining function does not operate normally B
      Slide function does not operate normally C

    B

    INSPECT FRONT SEAT ASSEMBLY (DRIVER SIDE) Click here

    C

    INSPECT POWER SEAT SLIDE MOTOR ASSEMBLY (DRIVER SIDE) Click here

    A

    REPLACE FRONT POWER SEAT SWITCH (DRIVER SIDE) Click here

  5. INSPECT POWER SEAT SLIDE MOTOR ASSEMBLY (DRIVER SIDE)


    1. A01NHYFE01
      Text in Illustration
      *1

      Component without harness connected

      (Power Seat Slide Motor Assembly LH)

      for LHD.


      1. Remove the power seat slide motor assembly LH Click here.

      2. Disconnect the a13 connector from the power seat slide motor assembly LH.

      3. Check operation of the power seat slide motor assembly LH.

      4. Check if the seat moves smoothly when the battery is connected to the power seat slide motor assembly LH connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a13-3 (FWD)

        Battery negative (-) → a13-4 (BACK)

        		 Forward

        Battery positive (+) → a13-4 (BACK)

        Battery negative (-) → a13-3 (FWD)

        		 Rearward
    2. A01NHYFE05
      Text in Illustration
      *1

      Component without harness connected

      (Power Seat Slide Motor Assembly RH)

      for RHD.


      1. Remove the power seat slide motor assembly RH Click here.

      2. Disconnect the Z24 connector from the power seat slide motor assembly RH.

      3. Check operation of the power seat slide motor assembly RH.

      4. Check if the seat moves smoothly when the battery is connected to the power seat slide motor assembly RH connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z24-4 (FWD)

        Battery negative (-) → Z24-3 (BACK)

        		 Forward

        Battery positive (+) → Z24-3 (BACK)

        Battery negative (-) → Z24-4 (FWD)

        		 Rearward

    NG

    REPLACE POWER SEAT SLIDE MOTOR ASSEMBLY (DRIVER SIDE) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT SLIDE MOTOR ASSEMBLY (DRIVER SIDE))


    1. A01NFP9E14
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch LH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly LH)

      for LHD.


      1. Disconnect the a9 connector from the front power seat switch LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        a9-2 (SLD+) - a13-3 (FWD) Always Below 1 Ω
        a9-4 (SLD-) - a13-4 (BACK) Always Below 1 Ω
        a9-2 (SLD+) - Body ground Always 10 kΩ or higher
        a9-4 (SLD-) - Body ground Always 10 kΩ or higher
    2. A01NFP9E15
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch RH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly RH)

      for RHD.


      1. Disconnect the Z26 connector from the front power seat switch RH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Z26-2 (SLD+) - Z24-4 (FWD) Always Below 1 Ω
        Z26-4 (SLD-) - Z24-3 (BACK) Always Below 1 Ω
        Z26-2 (SLD+) - Body ground Always 10 kΩ or higher
        Z26-4 (SLD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH (DRIVER SIDE) Click here

  7. INSPECT FRONT SEAT ASSEMBLY (DRIVER SIDE)


    1. for LHD.


      1. Remove the front seat assembly LH Click here.

      2. Disconnect the a1, a3 and a12 connectors from each motor.

      3. A01NDN9E13
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly LH (Front Vertical Motor))

        Check operation of the front vertical motor.

      4. Check if the seat moves smoothly when the battery is connected to the front vertical motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a1-1 (UP)

        Battery negative (-) → a1-2 (DOWN)

        		 Upward

        Battery positive (+) → a1-2 (DOWN)

        Battery negative (-) → a1-1 (UP)

        		 Downward
      5. A01NDN9E14
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly LH (Lifter Motor))

        Check operation of the lifter motor.

      6. Check if the seat moves smoothly when the battery is connected to the lifter motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a3-2 (UP)

        Battery negative (-) → a3-1 (DOWN)

        		 Upward

        Battery positive (+) → a3-1 (DOWN)

        Battery negative (-) → a3-2 (UP)

        		 Downward
      7. A01NDN9E15
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly LH (Reclining Motor))

        Check operation of the reclining motor.

      8. Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a12-2 (FWD)

        Battery negative (-) → a12-1 (BACK)

        		 Forward

        Battery positive (+) → a12-1 (BACK)

        Battery negative (-) → a12-2 (FWD)

        		 Rearward

    2. for RHD.


      1. Remove the front seat assembly RH Click here.

      2. Disconnect the Z2, Z5 and Z17 connectors from each motor.

      3. A01NDN9E19
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly RH (Front Vertical Motor))

        Check operation of the front vertical motor.

      4. Check if the seat moves smoothly when the battery is connected to the front vertical motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z2-2 (UP)

        Battery negative (-) → Z2-1 (DOWN)

        		 Upward

        Battery positive (+) → Z2-1 (DOWN)

        Battery negative (-) → Z2-2 (UP)

        		 Downward
      5. A01NDN9E20
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly RH (Lifter Motor))

        Check operation of the lifter motor.

      6. Check if the seat moves smoothly when the battery is connected to the lifter motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z5-1 (UP)

        Battery negative (-) → Z5-2 (DOWN)

        		 Forward

        Battery positive (+) → Z5-2 (DOWN)

        Battery negative (-) → Z5-1 (UP)

        		 Rearward
      7. A01NDN9E21
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly RH (Reclining Motor))

        Check operation of the reclining motor.

      8. Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z17-2 (FWD)

        Battery negative (-) → Z17-1 (BACK)

        		 Forward

        Battery positive (+) → Z17-1 (BACK)

        Battery negative (-) → Z17-2 (FWD)

        		 Rearward

    NG

    REPLACE FRONT SEAT ASSEMBLY (DRIVER SIDE) Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - FRONT SEAT ASSEMBLY)


    1. for LHD.

      A01NCVFE01

      1. Disconnect the a9 connector from the front power seat switch LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        a9-5 (FRV-) - a1-2 (DOWN) Always Below 1 Ω
        a9-7 (FRV+) - a1-1 (UP) Always Below 1 Ω
        a9-8 (LFT+) - a3-2 (UP) Always Below 1 Ω
        a9-11 (LFT-) - a3-1 (DOWN) Always Below 1 Ω
        a9-9 (RCL+) - a12-2 (FWD) Always Below 1 Ω
        a9-12 (RCL-) - a12-1 (BACK) Always Below 1 Ω
        a9-5 (FRV-) - Body ground Always 10 kΩ or higher
        a9-7 (FRV+) - Body ground Always 10 kΩ or higher
        a9-8 (LFT+) - Body ground Always 10 kΩ or higher
        a9-11 (LFT-) - Body ground Always 10 kΩ or higher
        a9-9 (RCL+) - Body ground Always 10 kΩ or higher
        a9-12 (RCL-) - Body ground Always 10 kΩ or higher
        Text in Illustration
        *1

        Front view of wire harness connector

        (to Front Power Seat Switch LH)

        		 *2

        Front view of wire harness connector

        (to Front Seat Assembly LH (Front Vertical Motor))
        *3

        Front view of wire harness connector

        (to Front Seat Assembly LH (Lifter Motor))

        		 *4

        Front view of wire harness connector

        (to Front Seat Assembly LH (Reclining Motor))
        *5 Front Vertical Motor *6 Lifter Motor
        *7 Reclining Motor - -

    2. for RHD.

      A01NCVFE02

      1. Disconnect the Z26 connector from the front power seat switch RH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Z26-5 (FRV-) - Z2-1 (DOWN) Always Below 1 Ω
        Z26-7 (FRV+) - Z2-2 (UP) Always Below 1 Ω
        Z26-8 (LFT+) - Z5-1 (UP) Always Below 1 Ω
        Z26-11 (LFT-) - Z5-2 (DOWN) Always Below 1 Ω
        Z26-9 (RCL+) - Z17-2 (FWD) Always Below 1 Ω
        Z26-12 (RCL-) - Z17-1 (BACK) Always Below 1 Ω
        Z26-5 (FRV-) - Body ground Always 10 kΩ or higher
        Z26-7 (FRV+) - Body ground Always 10 kΩ or higher
        Z26-8 (LFT+) - Body ground Always 10 kΩ or higher
        Z26-11 (LFT-) - Body ground Always 10 kΩ or higher
        Z26-9 (RCL+) - Body ground Always 10 kΩ or higher
        Z26-12 (RCL-) - Body ground Always 10 kΩ or higher
        Text in Illustration
        *1

        Front view of wire harness connector

        (to Front Power Seat Switch RH)

        		 *2

        Front view of wire harness connector

        (to Front Seat Assembly RH (Front Vertical Motor))
        *3

        Front view of wire harness connector

        (to Front Seat Assembly RH (Lifter Motor))

        		 *4

        Front view of wire harness connector

        (to Front Seat Assembly RH (Reclining Motor))
        *5 Front Vertical Motor *6 Lifter Motor
        *7 Reclining Motor - -

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH (DRIVER SIDE) Click here

  9. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH POWER SOURCE)


    1. A01NDWFE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch LH)

      for LHD.


      1. Disconnect the a8 connector from the front power seat switch LH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        a8-12 (SYSB) - Body ground Always 11 to 14 V
    2. A01NDWFE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch RH)

      for RHD.


      1. Disconnect the Z25 connector from the front power seat switch RH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        Z25-12 (SYSB) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT POWER SEAT SWITCH POWER SOURCE)

    OK

    REPLACE FRONT POWER SEAT SWITCH (DRIVER SIDE) Click here

  10. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Passenger Seat / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Passenger Seat
      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 Sliding switch signal (Rearward) / ON or OFF

      ON: Sliding switch (Rearward) on

      OFF: Sliding switch (Rearward) off

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

      ON: Sliding switch (Forward) on

      OFF: Sliding switch (Forward) off

      		 -
      OK
      ON or OFF is displayed on the intelligent tester according to the table above.

    NG

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH POWER SOURCE) Click here

    OK

  11. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


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

    2. Perform the Active Test according to the display on the intelligent tester.

      Driver Seat
      Tester Display Test Part Control Range Diagnostic Note
      Seat Reclining Seat reclining operation Front / OFF / Rear -
      Front Vertical Operation Seat front vertical operation Up / OFF / Down -
      Lifter Operation Seat lifter operation Up / OFF / Down -
      Seat Slide Operation Seat sliding operation Front / OFF / Rear -
      Result
      Result Proceed to
      The power seat motors operate normally A
      Front vertical, lifter or reclining function does not operate normally B
      Slide function does not operate normally C

    B

    INSPECT FRONT SEAT ASSEMBLY (FRONT PASSENGER SIDE) Click here

    C

    INSPECT POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE) Click here

    A

    REPLACE FRONT POWER SEAT SWITCH (DRIVER SIDE) Click here

  12. INSPECT POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE)


    1. A01NHYFE07
      Text in Illustration
      *1

      Component without harness connected

      (Power Seat Slide Motor Assembly RH)

      for LHD.


      1. Remove the power seat side motor assembly RH Click here.

      2. Disconnect the Z24 connector from the power seat slide motor assembly RH.

      3. Check operation of the power seat slide motor assembly RH.

      4. Check if the seat moves smoothly when the battery is connected to the power seat slide motor assembly RH connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z24-4 (FWD)

        Battery negative (-) → Z24-3 (BACK)

        		 Forward

        Battery positive (+) → Z24-3 (BACK)

        Battery negative (-) → Z24-4 (FWD)

        		 Rearward
    2. A01NHYFE06
      Text in Illustration
      *1

      Component without harness connected

      (Power Seat Slide Motor Assembly LH)

      for RHD.


      1. Remove the power seat side motor assembly LH Click here.

      2. Disconnect the a13 connector from the power seat slide motor assembly LH.

      3. Check operation of the power seat slide motor assembly LH.

      4. Check if the seat moves smoothly when the battery is connected to the power seat slide motor assembly LH connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a13-3 (FWD)

        Battery negative (-) → a13-4 (BACK)

        		 Forward

        Battery positive (+) → a13-4 (BACK)

        Battery negative (-) → a13-3 (FWD)

        		 Rearward

    NG

    REPLACE POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE) Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE))


    1. A01NFP9E16
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch RH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly RH)

      for LHD.


      1. Disconnect the Z26 connector from the front power seat switch RH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Z26-2 (SLD+) - Z24-4 (FWD) Always Below 1 Ω
        Z26-4 (SLD-) - Z24-3 (BACK) Always Below 1 Ω
        Z26-2 (SLD+) - Body ground Always 10 kΩ or higher
        Z26-4 (SLD-) - Body ground Always 10 kΩ or higher
    2. A01NFP9E17
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch LH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly LH)

      for RHD.


      1. Disconnect the a9 connector from the front power seat switch LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        a9-2 (SLD+) - a13-3 (FWD) Always Below 1 Ω
        a9-4 (SLD-) - a13-4 (BACK) Always Below 1 Ω
        a9-2 (SLD+) - Body ground Always 10 kΩ or higher
        a9-4 (SLD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  14. INSPECT FRONT SEAT ASSEMBLY (FRONT PASSENGER SIDE)


    1. for LHD.


      1. Remove the front seat assembly RH Click here.

      2. Disconnect the Z2, Z5 and Z17 connectors from each motor.

      3. A01NDN9E25
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly RH (Front Vertical Motor))

        Check operation of the front vertical motor.

      4. Check if the seat moves smoothly when the battery is connected to the front vertical motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z2-2 (UP)

        Battery negative (-) → Z2-1 (DOWN)

        		 Upward

        Battery positive (+) → Z2-1 (DOWN)

        Battery negative (-) → Z2-2 (UP)

        		 Downward
      5. A01NDN9E26
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly RH (Lifter Motor))

        Check operation of the lifter motor.

      6. Check if the seat moves smoothly when the battery is connected to the lifter motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z5-1 (UP)

        Battery negative (-) → Z5-2 (DOWN)

        		 Forward

        Battery positive (+) → Z5-2 (DOWN)

        Battery negative (-) → Z5-1 (UP)

        		 Rearward
      7. A01NDN9E27
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly RH (Reclining Motor))

        Check operation of the reclining motor.

      8. Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Z17-2 (FWD)

        Battery negative (-) → Z17-1 (BACK)

        		 Forward

        Battery positive (+) → Z17-1 (BACK)

        Battery negative (-) → Z17-2 (FWD)

        		 Rearward

    2. for RHD.


      1. Remove the front seat assembly LH Click here.

      2. Disconnect the a1, a3 and a12 connectors from each motor.

      3. A01NDN9E22
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly LH (Front Vertical Motor))

        Check operation of the front vertical motor.

      4. Check if the seat moves smoothly when the battery is connected to the front vertical motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a1-1 (UP)

        Battery negative (-) → a1-2 (DOWN)

        		 Upward

        Battery positive (+) → a1-2 (DOWN)

        Battery negative (-) → a1-1 (UP)

        		 Downward
      5. A01NDN9E23
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly LH (Lifter Motor))

        Check operation of the lifter motor.

      6. Check if the seat moves smoothly when the battery is connected to the lifter motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a3-2 (UP)

        Battery negative (-) → a3-1 (DOWN)

        		 Forward

        Battery positive (+) → a3-1 (DOWN)

        Battery negative (-) → a3-2 (UP)

        		 Rearward
      7. A01NDN9E24
        Text in Illustration
        *1

        Component without harness connected

        (Front Seat Assembly LH (Reclining Motor))

        Check operation of the reclining motor.

      8. Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → a12-2 (FWD)

        Battery negative (-) → a12-1 (BACK)

        		 Forward

        Battery positive (+) → a12-1 (BACK)

        Battery negative (-) → a12-2 (FWD)

        		 Rearward

    NG

    REPLACE FRONT SEAT ASSEMBLY (FRONT PASSENGER SIDE) Click here

    OK

  15. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - FRONT SEAT ASSEMBLY)


    1. for LHD.

      A01NCVFE04

      1. Disconnect the Z26 connector from the front power seat switch RH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Z26-5 (FRV-) - Z2-1 (DOWN) Always Below 1 Ω
        Z26-7 (FRV+) - Z2-2 (UP) Always Below 1 Ω
        Z26-8 (LFT+) - Z5-1 (UP) Always Below 1 Ω
        Z26-11 (LFT-) - Z5-2 (DOWN) Always Below 1 Ω
        Z26-9 (RCL+) - Z17-2 (FWD) Always Below 1 Ω
        Z26-12 (RCL-) - Z17-1 (BACK) Always Below 1 Ω
        Z26-5 (FRV-) - Body ground Always 10 kΩ or higher
        Z26-7 (FRV+) - Body ground Always 10 kΩ or higher
        Z26-8 (LFT+) - Body ground Always 10 kΩ or higher
        Z26-11 (LFT-) - Body ground Always 10 kΩ or higher
        Z26-9 (RCL+) - Body ground Always 10 kΩ or higher
        Z26-12 (RCL-) - Body ground Always 10 kΩ or higher
        Text in Illustration
        *1

        Front view of wire harness connector

        (to Front Power Seat Switch RH)

        		 *2

        Front view of wire harness connector

        (to Front Seat Assembly RH (Front Vertical Motor))
        *3

        Front view of wire harness connector

        (to Front Seat Assembly RH (Lifter Motor))

        		 *4

        Front view of wire harness connector

        (to Front Seat Assembly RH (Reclining Motor))
        *5 Front Vertical Motor *6 Lifter Motor
        *7 Reclining Motor - -

    2. for RHD.

      A01NCVFE03

      1. Disconnect the a9 connector from the front power seat switch LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        a9-5 (FRV-) - a1-2 (DOWN) Always Below 1 Ω
        a9-7 (FRV+) - a1-1 (UP) Always Below 1 Ω
        a9-8 (LFT+) - a3-2 (UP) Always Below 1 Ω
        a9-11 (LFT-) - a3-1 (DOWN) Always Below 1 Ω
        a9-9 (RCL+) - a12-2 (FWD) Always Below 1 Ω
        a9-12 (RCL-) - a12-1 (BACK) Always Below 1 Ω
        a9-5 (FRV-) - Body ground Always 10 kΩ or higher
        a9-7 (FRV+) - Body ground Always 10 kΩ or higher
        a9-8 (LFT+) - Body ground Always 10 kΩ or higher
        a9-11 (LFT-) - Body ground Always 10 kΩ or higher
        a9-9 (RCL+) - Body ground Always 10 kΩ or higher
        a9-12 (RCL-) - Body ground Always 10 kΩ or higher
        Text in Illustration
        *1

        Front view of wire harness connector

        (to Front Power Seat Switch LH)

        		 *2

        Front view of wire harness connector

        (to Front Seat Assembly LH (Front Vertical Motor))
        *3

        Front view of wire harness connector

        (to Front Seat Assembly LH (Lifter Motor))

        		 *4

        Front view of wire harness connector

        (to Front Seat Assembly LH (Reclining Motor))
        *5 Front Vertical Motor *6 Lifter Motor
        *7 Reclining Motor - -

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  16. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH POWER SOURCE)


    1. A01NDWFE05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch RH)

      for LHD.


      1. Disconnect the Z25 connector from the front power seat switch RH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        Z25-12 (SYSB) - Body ground Always 11 to 14 V
    2. A01NDWFE04
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch LH)

      for RHD.


      1. Disconnect the a8 connector from the front power seat switch LH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        a8-12 (SYSB) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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