FRONT POWER SEAT CONTROL SYSTEM(w/ Memory), 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 Problem with the voltage supplied to the position control sensor.

  • for Driver


    • Front power seat switch (for driver)


    • Front seat adjuster assembly (for driver)


    • Front seatback frame sub-assembly (for driver)


    • Wire harness or connector


  • for Front Passenger


    • Front power seat switch (for front passenger)


    • Front seat adjuster assembly (for front passenger)


    • Front separate type seatback spring assembly


    • Wire harness or connector

WIRING DIAGRAM


  1. for Driver

    A01W0BHE58

  2. for Front Passenger

    A01W0BHE48

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC output from "Driver Seat" B
      DTC output from "Passenger Seat" C

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - SLIDE MOTOR) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR DRIVER) - SLIDE MOTOR)


    1. Disconnect the X10*1 or W10*2 front power seat switch (for driver) connector.

    2. Disconnect the X23*1 or W1*2 slide motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      X10-5 (SSRS) - X23-2 Always Below 1 Ω
      X10-1 (SGND) - X23-3 Always Below 1 Ω
      X10-5 (SSRS) - X10-1 (SGND) Always 10 kΩ or higher
      X10-5 (SSRS) - Body ground Always 10 kΩ or higher
      X10-1 (SGND) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      W10-5 (SSRS) - W1-2 Always Below 1 Ω
      W10-1 (SGND) - W1-3 Always Below 1 Ω
      W10-5 (SSRS) - W10-1 (SGND) Always 10 kΩ or higher
      W10-5 (SSRS) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK FRONT POWER SEAT SWITCH (FOR DRIVER) (SLIDE MOTOR CIRCUIT)


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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      X23-2 - X23-3 Sliding switch on 4.8 to 5.1 V
      for RHD
      Tester Connection Condition Specified Condition
      W1-2 - W1-3 Sliding switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR DRIVER) - FRONT VERTICAL MOTOR)


    1. Disconnect the W5 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-3 (SSFV) - W5-2 Always Below 1 Ω
      W10-1 (SGND) - W5-3 Always Below 1 Ω
      W10-3 (SSFV) - W10-1 (SGND) Always 10 kΩ or higher
      W10-3 (SSFV) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W5-2 - W5-3 Front vertical switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR DRIVER) - LIFTER MOTOR)


    1. Disconnect the W6 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-4 (SSRL) - W6-2 Always Below 1 Ω
      W10-1 (SGND) - W6-3 Always Below 1 Ω
      W10-4 (SSRL) - W10-1 (SGND) Always 10 kΩ or higher
      W10-4 (SSRL) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK FRONT POWER SEAT SWITCH (FOR DRIVER) (LIFTER MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W6-2 - W6-3 Lifter switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER) Click here

    OK

  8. REPLACE FRONT SEAT ADJUSTER ASSEMBLY (FOR DRIVER)


    1. Replace the front seat adjuster assembly (for driver) Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY (FOR DRIVER) WAS DEFECTIVE)

    NG

  9. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR DRIVER) - RECLINING MOTOR)


    1. Disconnect the W10 front power seat switch (for driver) connector.

    2. Disconnect the Y3 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-11 (SSRR) - Y3-2 Always Below 1 Ω
      W10-1 (SGND) - Y3-3 Always Below 1 Ω
      W10-11 (SSRR) - W10-1 (SGND) Always 10 kΩ or higher
      W10-11 (SSRR) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK FRONT POWER SEAT SWITCH (FOR DRIVER) (RECLINING MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Y3-2 - Y3-3 Reclining switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER) Click here

    OK

  11. REPLACE FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR DRIVER)


    1. Replace the front seatback frame sub-assembly (for driver) Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    OK

    END (FRONT SEATBACK FRAME SUB-ASSEMBLY (FOR DRIVER) WAS DEFECTIVE)

    NG

    REPLACE FRONT POWER SEAT SWITCH (FOR DRIVER) Click here

  12. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - SLIDE MOTOR)


    1. Disconnect the W10 front power seat switch (for front passenger) connector.

    2. Disconnect the W21 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-5 (SSRS) - W21-2 Always Below 1 Ω
      W10-1 (SGND) - W21-3 Always Below 1 Ω
      W10-5 (SSRS) - W10-1 (SGND) Always 10 kΩ or higher
      W10-5 (SSRS) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) (SLIDE MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W21-2 - W21-3 Sliding switch on 4.8 to 5.1 V

    NG

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

    OK

  14. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - FRONT VERTICAL MOTOR)


    1. Disconnect the W5 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-3 (SSFV) - W5-2 Always Below 1 Ω
      W10-1 (SGND) - W5-3 Always Below 1 Ω
      W10-3 (SSFV) - W10-1 (SGND) Always 10 kΩ or higher
      W10-3 (SSFV) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) (FRONT VERTICAL MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W5-2 - W5-3 Front vertical switch on 4.8 to 5.1 V

    NG

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

    OK

  16. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - LIFTER MOTOR)


    1. Disconnect the W22 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-4 (SSRL) - W22-2 Always Below 1 Ω
      W10-1 (SGND) - W22-3 Always Below 1 Ω
      W10-4 (SSRL) - W10-1 (SGND) Always 10 kΩ or higher
      W10-4 (SSRL) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. CHECK FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) (LIFTER MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W22-2 - W22-3 Lifter switch on 4.8 to 5.1 V

    NG

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

    OK

  18. REPLACE FRONT SEAT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER)


    1. Replace the front seat adjuster assembly (for front passenger) Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    OK

    END (FRONT SEAT ADJUSTER ASSEMBLY (FOR FRONT PASSENGER) WAS DEFECTIVE)

    NG

  19. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) - RECLINING MOTOR)


    1. Disconnect the W10 front power seat switch (for front passenger) connector.

    2. Disconnect the Y3 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W10-11 (SSRR) - Y3-2 Always Below 1 Ω
      W10-1 (SGND) - Y3-3 Always Below 1 Ω
      W10-11 (SSRR) - W10-1 (SGND) Always 10 kΩ or higher
      W10-11 (SSRR) - Body ground Always 10 kΩ or higher
      W10-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  20. CHECK FRONT POWER SEAT SWITCH (FOR FRONT PASSENGER) (RECLINING MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Y3-2 - Y3-3 Reclining switch on 4.8 to 5.1 V

    NG

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

    OK

  21. REPLACE SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY


    1. Replace the separate type front seatback spring assembly Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    OK

    END (SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY WAS DEFECTIVE)

    NG

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