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 No.

Detection Item

DTC Detection Condition

Trouble Area

B2658

Short in Sensor with Motor Power Supply Circuit

A problem with the voltage supplied to the position control sensor.

  • Front power seat switch LH

  • Separate type front seat cushion spring assembly LH

  • Separate type front seatback spring assembly LH

  • Harness or connector

WIRING DIAGRAM

B248459E01

PROCEDURE

  1. CHECK FOR DTC

    1. Clear the DTCs

      Click here

      Body Electrical > Driver Seat > Clear DTCs

      Body Electrical > Mirror L > Clear DTCs

      Body Electrical > Main Body > Clear DTCs

    2. Check for DTCs

      Click here

      Body Electrical > Driver Seat > Trouble Codes

      Body Electrical > Mirror L > Trouble Codes

      Body Electrical > Main Body > Trouble Codes

      OK

      DTC B2658 is not output.

    Result

    Result

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    NG

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

    1. Disconnect the b5 switch connector.

    2. Disconnect the b1 motor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      b5-5 (SSRS) - b1-2 (O/P)

      Always

      Below 1 Ω

      b5-1 (SGND) - b1-3 (GND)

      Always

      Below 1 Ω

      b5-5 (SSRS) - b5-1 (SGND)

      Always

      10 kΩ or higher

      b5-5 (SSRS) - Body ground

      Always

      10 kΩ or higher

      b5-1 (SGND) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    B238255C05

    *a

    Front view of wire harness connector(to Separate Type Front Seat Cushion Spring Assembly LH [Slide Motor])

    1. Disconnect the b1 motor connector.

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

    Standard Voltage

    Tester Connection

    Switch Condition

    Specified Condition

    b1-2 (O/P) - b1-3 (GND)

    Sliding switch on

    4.8 to 5.1 V

    Result

    Result

    OK

    NG
    NG

    REPLACE FRONT POWER SEAT SWITCH LH

    Click here

    OK

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

    1. Disconnect the b5 switch connector.

    2. Disconnect the b2 motor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      b5-3 (SSFV) - b2-2 (O/P)

      Always

      Below 1 Ω

      b5-1 (SGND) - b2-3 (GND)

      Always

      Below 1 Ω

      b5-3 (SSFV) - b5-1 (SGND)

      Always

      10 kΩ or higher

      b5-3 (SSFV) - Body ground

      Always

      10 kΩ or higher

      b5-1 (SGND) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    B238255C06

    *a

    Front view of wire harness connector(to Separate Type Front Seat Cushion Spring Assembly LH [Front Vertical Motor])

    1. Disconnect the b2 motor connector.

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

    Standard Voltage

    Tester Connection

    Switch Condition

    Specified Condition

    b2-2 (O/P) - b2-3 (GND)

    Front vertical switch on

    4.8 to 5.1 V

    Result

    Result

    OK

    NG
    NG

    REPLACE FRONT POWER SEAT SWITCH LH

    Click here

    OK

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

    1. Disconnect the b5 switch connector.

    2. Disconnect the b3 motor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      b5-4 (SSRL) - b3-2 (O/P)

      Always

      Below 1 Ω

      b5-1 (SGND) - b3-3 (GND)

      Always

      Below 1 Ω

      b5-4 (SSRL) - b5-1 (SGND)

      Always

      10 kΩ or higher

      b5-4 (SSRL) - Body ground

      Always

      10 kΩ or higher

      b5-1 (SGND) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    B238255C07

    *a

    Front view of wire harness connector(to Separate Type Front Seat Cushion Spring Assembly LH [Lifter Motor])

    1. Disconnect the b3 motor connector.

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

    Standard Voltage

    Tester Connection

    Switch Condition

    Specified Condition

    b3-2 (O/P) - b3-3 (GND)

    Lifter switch on

    4.8 to 5.1 V

    Result

    Result

    OK

    NG
    NG

    REPLACE FRONT POWER SEAT SWITCH LH

    Click here

    OK

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

    1. Disconnect the b5 switch connector.

    2. Disconnect the f3 motor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      b5-11 (SSRR) - f3-2 (O/P)

      Always

      Below 1 Ω

      b5-1 (SGND) - f3-3 (GND)

      Always

      Below 1 Ω

      b5-11 (SSRR) - b5-1 (SGND)

      Always

      10 kΩ or higher

      b5-11 (SSRR) - Body ground

      Always

      10 kΩ or higher

      b5-1 (SGND) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK FRONT POWER SEAT SWITCH LH (RECLINING MOTOR CIRCUIT)

    B238255C08

    *a

    Front view of wire harness connector(to Separate Type Front Seatback Spring Assembly LH [Reclining Motor])

    1. Disconnect the f3 motor connector.

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

    Standard Voltage

    Tester Connection

    Switch Condition

    Specified Condition

    f3-2 (O/P) - f3-3 (GND)

    Reclining switch on

    4.8 to 5.1 V

    Result

    Result

    OK

    NG
    NG

    REPLACE FRONT POWER SEAT SWITCH LH

    Click here

    OK

  10. CHECK SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH

    1. Temporarily replace the separate type front seat cushion springs one at a time with a new or normally functioning one

      Click here

    2. Clear the DTCs

      Click here

      Body Electrical > Driver Seat > Clear DTCs

      Body Electrical > Mirror L > Clear DTCs

      Body Electrical > Main Body > Clear DTCs

    3. Check for DTCs

      Click here

      Body Electrical > Driver Seat > Trouble Codes

      Body Electrical > Mirror L > Trouble Codes

      Body Electrical > Main Body > Trouble Codes

      OK

      DTC B2658 is not output.

    Result

    Result

    OK

    NG
    OK

    END (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH IS DEFECTIVE)

    NG

  11. CHECK SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH

    1. Temporarily replace the separate type front seatbacks springs one at a time with a new or normally functioning one

      Click here

    2. Clear the DTCs

      Click here

      Body Electrical > Driver Seat > Clear DTCs

      Body Electrical > Mirror L > Clear DTCs

      Body Electrical > Main Body > Clear DTCs

    3. Check for DTCs

      Click here

      Body Electrical > Driver Seat > Trouble Codes

      Body Electrical > Mirror L > Trouble Codes

      Body Electrical > Main Body > Trouble Codes

      OK

      DTC B2658 is not output.

    Result

    Result

    OK

    NG
    OK

    END (SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH IS DEFECTIVE)

    NG

    REPLACE FRONT POWER SEAT SWITCH LH

    Click here