FRONT POWER SEAT CONTROL SYSTEM, 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 voltage supplied to the position control sensor.

  • Position control ECU

  • Power seat motor assembly

  • Harness or connector

WIRING DIAGRAM

A004P9RE03

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2658 output does not occur.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - POWER SEAT MOTOR [SLIDE MOTOR])

    A004NQEE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Position Control ECU)
    *4

    Front view of wire harness connector

    (to Power Seat Motor)

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the O26*1 or O16*2 ECU connector.

    2. Disconnect the O19*1 or O9*2 motor connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O26-23 (PVCC) - O19-5 (VCC) Always Below 1 Ω
      O26-6 (SSRS) - O19-2 (O/P) Always Below 1 Ω
      O26-29 (SGND) - O19-6 (GND) Always Below 1 Ω
      O26-23 (PVCC) - Body ground Always 10 kΩ or higher
      O26-6 (SSRS) - Body ground Always 10 kΩ or higher
      O26-29 (SGND) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      O16-23 (PVCC) - O9-5 (VCC) Always Below 1 Ω
      O16-6 (SSRS) - O9-2 (O/P) Always Below 1 Ω
      O16-29 (SGND) - O9-6 (GND) Always Below 1 Ω
      O16-23 (PVCC) - Body ground Always 10 kΩ or higher
      O16-6 (SSRS) - Body ground Always 10 kΩ or higher
      O16-29 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK POSITION CONTROL ECU ASSEMBLY

    A004OE8E02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Power Seat Motor)

    1. Disconnect the O19*1 or O9*2 motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      O19-5 (VCC) - O19-6 (GND) Sliding switch on 5.5 to 6.5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      O9-5 (VCC) - O9-6 (GND) Sliding switch on 5.5 to 6.5 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - POWER SEAT MOTOR [RECLINING MOTOR])

    A004TQGE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Position Control ECU)
    *4

    Front view of wire harness connector

    (to Power Seat Motor)

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the O26*1 or O16*2 ECU connector.

    2. Disconnect the O22*1 or O12*2 motor connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O26-3 (PVCC) - O22-6 (VCC) Always Below 1 Ω
      O26-5 (SSRR) - O22-1 (O/P) Always Below 1 Ω
      O26-28 (SGND) - O22-2 (GND) Always Below 1 Ω
      O26-3 (PVCC) - Body ground Always 10 kΩ or higher
      O26-5 (SSRR) - Body ground Always 10 kΩ or higher
      O26-28 (SGND) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      O16-3 (PVCC) - O12-6 (VCC) Always Below 1 Ω
      O16-5 (SSRR) - O12-1 (O/P) Always Below 1 Ω
      O16-28 (SGND) - O12-2 (GND) Always Below 1 Ω
      O16-3 (PVCC) - Body ground Always 10 kΩ or higher
      O16-5 (SSRR) - Body ground Always 10 kΩ or higher
      O16-28 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK POSITION CONTROL ECU ASSEMBLY

    A004N8QE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Power Seat Motor)

    1. Disconnect the O22*1 or O12*2 motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      O22-6 (VCC) - O22-2 (GND) Reclining switch on 5.5 to 6.5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      O12-6 (VCC) - O12-2 (GND) Reclining switch on 5.5 to 6.5 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - POWER SEAT MOTOR [FRONT VERTICAL MOTOR])

    A004PCXE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Position Control ECU)
    *4

    Front view of wire harness connector

    (to Power Seat Motor)

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the O26*1 or O16*2 ECU connector.

    2. Disconnect the O20*1 or O10*2 motor connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O26-24 (PVCC) - O20-5 (VCC) Always Below 1 Ω
      O26-7 (SSFV) - O20-2 (O/P) Always Below 1 Ω
      O26-30 (SGND) - O20-6 (GND) Always Below 1 Ω
      O26-24 (PVCC) - Body ground Always 10 kΩ or higher
      O26-7 (SSFV) - Body ground Always 10 kΩ or higher
      O26-30 (SGND) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      O16-24 (PVCC) - O10-5 (VCC) Always Below 1 Ω
      O16-7 (SSFV) - O10-2 (O/P) Always Below 1 Ω
      O16-30 (SGND) - O10-6 (GND) Always Below 1 Ω
      O16-24 (PVCC) - Body ground Always 10 kΩ or higher
      O16-7 (SSFV) - Body ground Always 10 kΩ or higher
      O16-30 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK POSITION CONTROL ECU ASSEMBLY

    A004NQLE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Power Seat Motor)

    1. Disconnect the O20*1 or O10*2 motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      O20-5 (VCC) - O20-6 (GND) Front vertical switch on 5.5 to 6.5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      O10-5 (VCC) - O10-6 (GND) Front vertical switch on 5.5 to 6.5 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - POWER SEAT MOTOR [LIFTER MOTOR])

    A004RMDE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Position Control ECU)
    *4

    Front view of wire harness connector

    (to Power Seat Motor)

    • *1: for LHD

    • *2: for RHD


    1. Disconnect the O26*1 or O16*2 ECU connector.

    2. Disconnect the O21*1 or O11*2 motor connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O26-25 (PVCC) - O21-5 (VCC) Always Below 1 Ω
      O26-8 (SSRL) - O21-1 (O/P) Always Below 1 Ω
      O26-31 (SGND) - O21-4 (GND) Always Below 1 Ω
      O26-25 (PVCC) - Body ground Always 10 kΩ or higher
      O26-8 (SSRL) - Body ground Always 10 kΩ or higher
      O26-31 (SGND) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      O16-25 (PVCC) - O11-5 (VCC) Always Below 1 Ω
      O16-8 (SSRL) - O11-1 (O/P) Always Below 1 Ω
      O16-31 (SGND) - O11-4 (GND) Always Below 1 Ω
      O16-25 (PVCC) - Body ground Always 10 kΩ or higher
      O16-8 (SSRL) - Body ground Always 10 kΩ or higher
      O16-31 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK POSITION CONTROL ECU ASSEMBLY

    A004OP1E02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Power Seat Motor)

    1. Disconnect the O21*1 or O11*2 motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      O21-5 (VCC) - O21-4 (GND) Lifter switch on 5.5 to 6.5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      O11-5 (VCC) - O11-4 (GND) Lifter switch on 5.5 to 6.5 V

    NG

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    OK

  10. CHECK POWER SEAT MOTOR ASSEMBLY (OPERATION)


    1. Clear the DTCs Click here.

    2. Temporarily replace each power seat motor one at a time with a new or normally functioning one.


      1. Slide motor.

      2. Reclining motor Click here.

      3. Front vertical motor Click here.

      4. Lifter motor Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 output does not occur.
      Result
      Result Proceed to
      NG A
      OK (Slide motor) B
      OK (Reclining motor) C
      OK (Front vertical motor) D
      OK (Lifter motor) E

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    B

    END (REPLACE POWER SEAT MOTOR ASSEMBLY [SLIDE MOTOR])

    C

    END (REPLACE POWER SEAT MOTOR ASSEMBLY [RECLINING MOTOR]) Click here

    D

    END (REPLACE POWER SEAT MOTOR ASSEMBLY [FRONT VERTICAL MOTOR]) Click here

    E

    END (REPLACE POWER SEAT MOTOR ASSEMBLY [LIFTER MOTOR]) Click here