FRONT POWER SEAT CONTROL SYSTEM (for RHD), Diagnostic DTC:B2658

DTC Code DTC Name
B2658 Short in Sensor with Motor Power Supply Circuit

DESCRIPTION

This DTC is stored when a power seat motor operates (a position control sensor is being supplied with power) and the power supply voltage does not rise to the specified value.

DTC Code DTC Detection Condition Trouble Area
B2658 A problem with the voltage supplied to the position control sensor.

  • Power seat switch assembly*1

  • Position control ECU assembly*2, *3, *4

  • Front seat adjuster assembly LH*4

  • Front seat adjuster assembly RH*1,*2, *3

  • Front seat back support LH*4

  • Front seat back support RH*2, *3

  • Front seat back adjuster assembly*3, *4

  • Harness or connector

WIRING DIAGRAM


  1. for Driver Side (Standard Seat Type):

    A01FSRXE02

  2. for Driver Side (Sports Seat Type):

    A01FS0FE05
    A01FSI8E02

  3. for Driver Side (Luxury Seat Type):

    A01FS0FE05
    A01FTLOE03

  4. for Front Passenger Side (Luxury Seat Type):

    A01FSVGE11
    A01FTLOE04

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      B2658 is output (for Driver Side, Standard Seat Type). A
      B2658 is output (for Driver Side, Sports Seat Type). B
      B2658 is output (for Driver Side, Luxury Seat Type). C
      B2658 is output (for Front Passenger Side, Luxury Seat Type). D
      B2658 is not output. E

    B

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    C

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    D

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH) Click here

    E

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c15 power seat switch assembly connector.

    2. Disconnect the c6 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c15-5 (SSRS) - c6-2 (O/P) Always Below 1 Ω
      c15-1 (SGND) - c6-3 (GND) Always Below 1 Ω
      c15-5 (SSRS) - c15-1 (SGND) Always 10 kΩ or higher
      c15-5 (SSRS) - Body ground Always 10 kΩ or higher
      c15-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK POWER SEAT SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FSRQE69
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Slide Motor])

      Reconnect the c15 power seat switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - c6-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c15 power seat switch assembly connector.

    2. Disconnect the c11 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c15-3 (SSFV) - c11-2 (O/P) Always Below 1 Ω
      c15-1 (SGND) - c11-3 (GND) Always Below 1 Ω
      c15-3 (SSFV) - c15-1 (SGND) Always 10 kΩ or higher
      c15-3 (SSFV) - Body ground Always 10 kΩ or higher
      c15-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK POWER SEAT SWITCH ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT)


    1. A01FSRQE70
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Front Vertical Motor])

      Reconnect the c15 power seat switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c11-2 (O/P) - c11-3 (GND) Front vertical switch on 4.8 to 5.1 V

    NG

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c15 power seat switch assembly connector.

    2. Disconnect the c13 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c15-4 (SSRL) - c13-2 (O/P) Always Below 1 Ω
      c15-1 (SGND) - c13-3 (GND) Always Below 1 Ω
      c15-4 (SSRL) - c15-1 (SGND) Always 10 kΩ or higher
      c15-4 (SSRL) - Body ground Always 10 kΩ or higher
      c15-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK POWER SEAT SWITCH ASSEMBLY (LIFTER MOTOR CIRCUIT)


    1. A01FSRQE71
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Lifter Motor])

      Reconnect the c15 power seat switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c13-2 (O/P) - c13-3 (GND) Lifter switch on 4.8 to 5.1 V

    NG

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

    OK

  8. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH


    1. Temporarily replace the front seat adjuster assembly RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY) Click here

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)

  9. CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY)


    1. Disconnect the c15 power seat switch assembly connector.

    2. Disconnect the c25 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c15-11 (SSRR) - c25-2 (O/P) Always Below 1 Ω
      c15-1 (SGND) - c25-3 (GND) Always Below 1 Ω
      c15-11 (SSRR) - c15-1 (SGND) Always 10 kΩ or higher
      c15-11 (SSRR) - Body ground Always 10 kΩ or higher
      c15-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK POWER SEAT SWITCH ASSEMBLY (RECLINING MOTOR CIRCUIT)


    1. A01FSRQE72
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Seat Reclining Motor Assembly)

      Reconnect the c15 power seat switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c25-2 (O/P) - c25-3 (GND) Reclining switch on 4.8 to 5.1 V

    NG

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

    OK

  11. CHECK POWER SEAT RECLINING MOTOR ASSEMBLY


    1. Temporarily replace the power seat reclining motor assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

    OK

    END (POWER SEAT RECLINING MOTOR ASSEMBLY WAS DEFECTIVE)

  12. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c6 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-8 (SSRS) - c6-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c6-3 (GND) Always Below 1 Ω
      c3-8 (SSRS) - c2-20 (SGND) Always 10 kΩ or higher
      c3-8 (SSRS) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FSRQE73
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Slide Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - c6-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  14. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c11 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-24 (SSFV) - c11-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c11-3 (GND) Always Below 1 Ω
      c3-24 (SSFV) - c2-20 (SGND) Always 10 kΩ or higher
      c3-24 (SSFV) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK POSITION CONTROL ECU ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT)


    1. A01FSRQE74
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Front Vertical Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c11-2 (O/P) - c11-3 (GND) Front vertical switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  16. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c13 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-10 (SSRL) - c13-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c13-3 (GND) Always Below 1 Ω
      c3-10 (SSRL) - c2-20 (SGND) Always 10 kΩ or higher
      c3-10 (SSRL) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. CHECK POSITION CONTROL ECU ASSEMBLY (LIFTER MOTOR CIRCUIT)


    1. A01FSRQE75
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Lifter Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c13-2 (O/P) - c13-3 (GND) Lifter switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  18. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c9 cushion motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-3 (SSRC) - c9-2 (VCC) Always Below 1 Ω
      c2-20 (SGND) - c9-3 (GND) Always Below 1 Ω
      c3-3 (SSRC) - c9-20 (SGND) Always 10 kΩ or higher
      c3-3 (SSRC) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. CHECK POSITION CONTROL ECU ASSEMBLY (CUSHION MOTOR CIRCUIT)


    1. A01FSRQE76
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Cushion Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c9-2 (VCC) - c9-3 (GND) Cushion switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  20. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH


    1. Temporarily replace the front seat adjuster assembly RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY) Click here

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)

  21. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c25 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-14 (SSRR) - c25-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c25-3 (GND) Always Below 1 Ω
      c3-14 (SSRR) - c2-20 (SGND) Always 10 kΩ or higher
      c3-14 (SSRR) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  22. CHECK POSITION CONTROL ECU ASSEMBLY (RECLINING MOTOR CIRCUIT)


    1. A01FSRQE58
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Seat Reclining Motor Assembly)

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c25-2 (O/P) - c25-3 (GND) Reclining switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  23. CHECK POWER SEAT RECLINING MOTOR ASSEMBLY


    1. Temporarily replace the power seat reclining motor assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY RH) Click here

    OK

    END (POWER SEAT RECLINING MOTOR ASSEMBLY WAS DEFECTIVE)

  24. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c26 lumbar motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-13 (SSLB) - c26-2 (VCC) Always Below 1 Ω
      c2-20 (SGND) - c26-3 (GND) Always Below 1 Ω
      c3-13 (SSLB) - c2-20 (SGND) Always 10 kΩ or higher
      c3-13 (SSLB) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  25. CHECK POSITION CONTROL ECU ASSEMBLY (LUMBAR MOTOR CIRCUIT)


    1. A01FSRQE47
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lumbar Support Adjuster Assembly RH (Lumbar Motor))

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c26-2 (VCC) - c26-3 (GND) Lumbar switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  26. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c33 pelvis motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-15 (SSPL) - c33-2 (SPEL) Always Below 1 Ω
      c2-20 (SGND) - c33-3 (PELE) Always Below 1 Ω
      c3-15 (SSPL) - c2-20 (SGND) Always 10 kΩ or higher
      c3-15 (SSPL) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  27. CHECK POSITION CONTROL ECU ASSEMBLY (PELVIS MOTOR CIRCUIT)


    1. A01FSRQE77
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lumbar Support Adjuster Assembly RH [Pelvis Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c33-2 (SPEL) - c33-3 (PELE) Pelvis switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  28. CHECK LUMBAR SUPPORT ADJUSTER ASSEMBLY RH


    1. Temporarily replace the lumbar support adjuster assembly RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK SUPPORT RH) Click here

    OK

    END (LUMBAR SUPPORT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)

  29. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK SUPPORT RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c28 side support motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-16 (SSIR) - c28-2 (SISR) Always Below 1 Ω
      c2-20 (SGND) - c28-3 (ISRE) Always Below 1 Ω
      c3-16 (SSIR) - c2-20 (SGND) Always 10 kΩ or higher
      c3-16 (SSIR) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  30. CHECK POSITION CONTROL ECU ASSEMBLY (SIDE SUPPORT MOTOR CIRCUIT)


    1. A01FSRQE78
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Back Support RH [Side Support Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c28-2 (SISR) - c28-3 (ISRE) Side support switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  31. CHECK FRONT SEAT BACK SUPPORT RH


    1. Temporarily replace the front seat back support RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

    END (FRONT SEAT BACK SUPPORT RH WAS DEFECTIVE)

  32. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c6 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-8 (SSRS) - c6-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c6-3 (GND) Always Below 1 Ω
      c3-8 (SSRS) - c2-20 (SGND) Always 10 kΩ or higher
      c3-8 (SSRS) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  33. CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FSRQE79
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Slide Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - c6-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  34. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c11 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-24 (SSFV) - c11-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c11-3 (GND) Always Below 1 Ω
      c3-24 (SSFV) - c2-20 (SGND) Always 10 kΩ or higher
      c3-24 (SSFV) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  35. CHECK POSITION CONTROL ECU ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT)


    1. A01FSRQE80
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Front Vertical Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c11-2 (O/P) - c11-3 (GND) Front vertical switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  36. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c13 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-10 (SSRL) - c13-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c13-3 (GND) Always Below 1 Ω
      c3-10 (SSRL) - c2-20 (SGND) Always 10 kΩ or higher
      c3-10 (SSRL) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  37. CHECK POSITION CONTROL ECU ASSEMBLY (LIFTER MOTOR CIRCUIT)


    1. A01FSRQE62
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Lifter Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c13-2 (O/P) - c13-3 (GND) Lifter switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  38. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c9 cushion motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-3 (SSRC) - c9-2 (VCC) Always Below 1 Ω
      c2-20 (SGND) - c9-3 (GND) Always Below 1 Ω
      c3-3 (SSRC) - c2-20 (SGND) Always 10 kΩ or higher
      c3-3 (SSRC) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  39. CHECK POSITION CONTROL ECU ASSEMBLY (CUSHION MOTOR CIRCUIT)


    1. A01FSRQE81
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly RH [Cushion Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c9-2 (VCC) - c9-3 (GND) Cushion switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  40. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH


    1. Temporarily replace the front seat adjuster assembly RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY) Click here

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)

  41. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c25 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-14 (SSRR) - c25-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c25-3 (GND) Always Below 1 Ω
      c3-14 (SSRR) - c2-20 (SGND) Always 10 kΩ or higher
      c3-14 (SSRR) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  42. CHECK POSITION CONTROL ECU ASSEMBLY (RECLINING MOTOR CIRCUIT)


    1. A01FSRQE82
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Seat Reclining Motor Assembly)

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c25-2 (O/P) - c25-3 (GND) Reclining switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  43. CHECK POWER SEAT RECLINING MOTOR ASSEMBLY


    1. Temporarily replace the power seat reclining motor assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY RH) Click here

    OK

    END (POWER SEAT RECLINING MOTOR ASSEMBLY WAS DEFECTIVE)

  44. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c26 lumbar motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-13 (SSLB) - c26-2 (VCC) Always Below 1 Ω
      c2-20 (SGND) - c26-3 (GND) Always Below 1 Ω
      c3-13 (SSLB) - c2-20 (SGND) Always 10 kΩ or higher
      c3-13 (SSLB) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  45. CHECK POSITION CONTROL ECU ASSEMBLY (LUMBAR MOTOR CIRCUIT)


    1. A01FSRQE83
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lumbar Support Adjuster Assembly RH [Lumbar Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c26-2 (VCC) - c26-3 (GND) Lumbar switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  46. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c33 pelvis motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-15 (SSPL) - c33-2 (SPEL) Always Below 1 Ω
      c2-20 (SGND) - c33-3 (PELE) Always Below 1 Ω
      c3-15 (SSPL) - c2-20 (SGND) Always 10 kΩ or higher
      c3-15 (SSPL) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  47. CHECK POSITION CONTROL ECU ASSEMBLY (PELVIS MOTOR CIRCUIT)


    1. A01FSRQE84
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lumbar Support Adjuster Assembly RH [Pelvis Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c33-2 (SPEL) - c33-3 (PELE) Pelvis switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  48. CHECK LUMBAR SUPPORT ADJUSTER ASSEMBLY RH


    1. Temporarily replace the lumbar support adjuster assembly RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK SUPPORT RH) Click here

    OK

    END (LUMBAR SUPPORT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)

  49. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK SUPPORT RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c28 side support motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c2-16 (SSIR) - c28-2 (SISR) Always Below 1 Ω
      c2-20 (SGND) - c28-3 (ISRE) Always Below 1 Ω
      c3-16 (SSIR) - c2-20 (SGND) Always 10 kΩ or higher
      c3-16 (SSIR) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  50. CHECK POSITION CONTROL ECU ASSEMBLY (SIDE SUPPORT MOTOR CIRCUIT)


    1. A01FSRQE87
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Back Support RH [Side Support Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c28-2 (SISR) - c28-3 (ISRE) Side support switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  51. CHECK FRONT SEAT BACK SUPPORT RH


    1. Temporarily replace the front seat back support RH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK ADJUSTER ASSEMBLY) Click here

    OK

    END (FRONT SEAT BACK SUPPORT RH WAS DEFECTIVE)

  52. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK ADJUSTER ASSEMBLY)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

    2. Disconnect the c31 front seat back adjuster motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-9 (SSMR) - c31-2 (SMR) Always Below 1 Ω
      c2-20 (SGND) - c31-3 (MRE) Always Below 1 Ω
      c3-9 (SSMR) - c2-20 (SGND) Always 10 kΩ or higher
      c3-9 (SSMR) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  53. CHECK POSITION CONTROL ECU ASSEMBLY (FRONT SEAT BACK ADJUSTER MOTOR CIRCUIT)


    1. A01FSRQE88
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Back Adjuster Assembly [Front Seat Back Adjuster Motor])

      Reconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c31-2 (SMR) - c31-3 (MRE) Front seat back adjuster switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  54. CHECK FRONT SEAT BACK ADJUSTER ASSEMBLY


    1. Temporarily replace the front seat back adjuster assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

    END (FRONT SEAT BACK ADJUSTER ASSEMBLY WAS DEFECTIVE)

  55. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d7 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-8 (SSRS) - d7-2 (VCC) Always Below 1 Ω
      d5-20 (SGND) - d7-3 (GND) Always Below 1 Ω
      d4-8 (SSRS) - d5-20 (SGND) Always 10 kΩ or higher
      d4-8 (SSRS) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  56. CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FSRQE89
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly LH [Slide Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d7-2 (VCC) - d7-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  57. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d10 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-24 (SSFV) - d10-2 (VCC) Always Below 1 Ω
      d5-20 (SGND) - d10-3 (GND) Always Below 1 Ω
      d4-24 (SSFV) - d5-20 (SGND) Always 10 kΩ or higher
      d4-24 (SSFV) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  58. CHECK POSITION CONTROL ECU ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT)


    1. A01FSRQE90
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly LH [Front Vertical Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d10-2 (VCC) - d10-3 (GND) Front vertical switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  59. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d12 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-10 (SSRL) - d12-2 (VCC) Always Below 1 Ω
      d5-20 (SGND) - d12-3 (GND) Always Below 1 Ω
      d4-10 (SSRL) - d5-20 (SGND) Always 10 kΩ or higher
      d4-10 (SSRL) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  60. CHECK POSITION CONTROL ECU ASSEMBLY (LIFTER MOTOR CIRCUIT)


    1. A01FSRQE91
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly LH [Lifter Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d12-2 (VCC) - d12-3 (GND) Lifter switch on 4.8 to 5.1 V
      Result
      Result Proceed to
      OK (for Ottoman) A
      OK (except Ottoman) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH) Click here

    C

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    A

  61. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d35 ottoman motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-3 (SSRC) - d35-2 (P) Always Below 1 Ω
      d5-20 (SGND) - d35-3 (GND) Always Below 1 Ω
      d4-3 (SSRC) - d5-20 (SGND) Always 10 kΩ or higher
      d4-3 (SSRC) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  62. CHECK POSITION CONTROL ECU ASSEMBLY (OTTOMAN MOTOR CIRCUIT)


    1. A01FSRQE97
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly LH [Ottoman Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d35-2 (P) - d35-3 (GND) Ottoman switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  63. CHECK FRONT SEAT ADJUSTER ASSEMBLY LH


    1. Temporarily replace the front seat adjuster assembly LH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY) Click here

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY LH WAS DEFECTIVE)

  64. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d9 cushion motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-3 (SSRC) - d9-2 (P) Always Below 1 Ω
      d5-20 (SGND) - d9-3 (GND) Always Below 1 Ω
      d4-3 (SSRC) - d5-20 (SGND) Always 10 kΩ or higher
      d4-3 (SSRC) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  65. CHECK POSITION CONTROL ECU ASSEMBLY (CUSHION MOTOR CIRCUIT)


    1. A01FSRQE92
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Adjuster Assembly LH [Cushion Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d9-2 (P) - d9-3 (GND) Cushion switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  66. CHECK FRONT SEAT ADJUSTER ASSEMBLY LH


    1. Temporarily replace the front seat adjuster assembly LH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY) Click here

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY LH WAS DEFECTIVE)

  67. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - POWER SEAT RECLINING MOTOR ASSEMBLY)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d25 power seat reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-14 (SSRR) - d25-2 (VCC) Always Below 1 Ω
      d5-20 (SGND) - d25-3 (GND) Always Below 1 Ω
      d4-14 (SSRR) - d5-20 (SGND) Always 10 kΩ or higher
      d4-14 (SSRR) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  68. CHECK POSITION CONTROL ECU ASSEMBLY (RECLINING MOTOR CIRCUIT)


    1. A01FSRQE59
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Power Seat Reclining Motor Assembly)

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d25-2 (VCC) - d25-3 (GND) Reclining switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  69. CHECK POWER SEAT RECLINING MOTOR ASSEMBLY


    1. Temporarily replace the power seat reclining motor assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY LH) Click here

    OK

    END (POWER SEAT RECLINING MOTOR ASSEMBLY WAS DEFECTIVE)

  70. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d31 lumbar motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-13 (SSLB) - d31-2 (VCC) Always Below 1 Ω
      d5-20 (SGND) - d31-3 (GND) Always Below 1 Ω
      d4-13 (SSLB) - d5-20 (SGND) Always 10 kΩ or higher
      d4-13 (SSLB) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  71. CHECK POSITION CONTROL ECU ASSEMBLY (LUMBAR MOTOR CIRCUIT)


    1. A01FSRQE46
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lumbar Support Adjuster Assembly LH [Lumbar Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d31-2 (VCC) - d31-3 (GND) Lumbar switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  72. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - LUMBAR SUPPORT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d28 pelvis motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-15 (SSPL) - d28-2 (SPEL) Always Below 1 Ω
      d5-20 (SGND) - d28-3 (PELG) Always Below 1 Ω
      d4-15 (SSPL) - d5-20 (SGND) Always 10 kΩ or higher
      d4-15 (SSPL) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  73. CHECK POSITION CONTROL ECU ASSEMBLY (PELVIS MOTOR CIRCUIT)


    1. A01FSRQE94
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lumbar Support Adjuster Assembly LH [Pelvis Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d28-2 (SPEL) - d28-3 (PELG) Pelvis switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  74. CHECK LUMBAR SUPPORT ADJUSTER ASSEMBLY LH


    1. Temporarily replace the lumbar support adjuster assembly LH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK SUPPORT LH) Click here

    OK

    END (LUMBAR SUPPORT ADJUSTER ASSEMBLY LH WAS DEFECTIVE)

  75. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK SUPPORT LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d30 side support motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-16 (SSIR) - d30-2 (SISR) Always Below 1 Ω
      d5-20 (SGND) - d30-3 (ISRG) Always Below 1 Ω
      d4-16 (SSIR) - d5-20 (SGND) Always 10 kΩ or higher
      d4-16 (SSIR) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  76. CHECK POSITION CONTROL ECU ASSEMBLY (SIDE SUPPORT CIRCUIT)


    1. A01FSRQE86
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Back Support LH [Side Support Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d30-2 (SISR) - d30-3 (ISRG) Side support switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  77. CHECK FRONT SEAT BACK SUPPORT LH


    1. Temporarily replace the front seat back support LH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK ADJUSTER ASSEMBLY) Click here

    OK

    END (FRONT SEAT BACK SUPPORT LH WAS DEFECTIVE)

  78. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT BACK ADJUSTER ASSEMBLY)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

    2. Disconnect the d26 front seat back adjuster motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-9 (SSMR) - d26-2 (SMR) Always Below 1 Ω
      d5-20 (SGND) - d26-3 (MRG) Always Below 1 Ω
      d4-9 (SSMR) - d5-20 (SGND) Always 10 kΩ or higher
      d4-9 (SSMR) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  79. CHECK POSITION CONTROL ECU ASSEMBLY (FRONT SEAT BACK ADJUSTER MOTOR CIRCUIT)


    1. A01FSRQE67
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Back Adjuster Assembly [Front Seat Back Adjuster Motor])

      Reconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d26-2 (SMR) - d26-3 (MRG) Front seat back adjuster switch on 4.8 to 5.1 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  80. CHECK FRONT SEAT BACK ADJUSTER ASSEMBLY


    1. Temporarily replace the front seat back adjuster assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

    END (FRONT SEAT BACK ADJUSTER ASSEMBLY WAS DEFECTIVE)