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 No. Detection Item DTC Detection Condition Trouble Area
B2658 Short in Sensor with Motor Power Supply Circuit Problem with the voltage supplied to the position control sensor.

  • Position control ECU and switch assembly

  • Separate type front seat cushion spring assembly

  • Separate type front seatback spring assembly

  • Harness or connector

WIRING DIAGRAM

A01QQ42E28

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Driver Seat > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Driver Seat > Trouble Codes
      Result
      Proceed to
      DTC B2658 is not output
      DTC B2658 is output

    DTC B2658 is not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B2658 is output

  2. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - SLIDE MOTOR)


    1. Disconnect the e6 position control ECU and switch assembly connector.

    2. Disconnect the e12 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e6-5 (SSRS) - e12-2 Always Below 1 Ω
      e6-1 (SGND) - e12-3 Always Below 1 Ω
      e6-5 (SSRS) - e6-1 (SGND) Always 10 kΩ or higher
      e6-5 (SSRS) - Body ground Always 10 kΩ or higher
      e6-1 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      e12-2 - e12-3 Sliding switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - FRONT VERTICAL MOTOR)


    1. Disconnect the e13 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e6-3 (SSFV) - e13-2 Always Below 1 Ω
      e6-1 (SGND) - e13-3 Always Below 1 Ω
      e6-3 (SSFV) - e6-1 (SGND) Always 10 kΩ or higher
      e6-3 (SSFV) - Body ground Always 10 kΩ or higher
      e6-1 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (FRONT VERTICAL MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      e13-2 - e13-3 Front vertical switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - LIFTER MOTOR)


    1. Disconnect the e14 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e6-4 (SSRL) - e14-2 Always Below 1 Ω
      e6-1 (SGND) - e14-3 Always Below 1 Ω
      e6-4 (SSRL) - e6-1 (SGND) Always 10 kΩ or higher
      e6-4 (SSRL) - Body ground Always 10 kΩ or higher
      e6-1 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (LIFTER MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      e14-2 - e14-3 Lifter switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

    OK

  8. CHECK SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY


    1. Temporarily replace the separate type front seat cushion spring assembly with a new or normally functioning one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Driver Seat > Clear DTCs

    3. Check for DTCs.

      Click here


      Body Electrical > Driver Seat > Trouble Codes
      Result
      Proceed to
      DTC B2658 is not output
      DTC B2658 is output

    DTC B2658 is not output

    END (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY WAS DEFECTIVE)

    DTC B2658 is output

  9. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - RECLINING MOTOR)


    1. Disconnect the e6 position control ECU and switch assembly connector.

    2. Disconnect the f1 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e6-11 (SSRR) - f1-2 Always Below 1 Ω
      e6-1 (SGND) - f1-3 Always Below 1 Ω
      e6-11 (SSRR) - e6-1 (SGND) Always 10 kΩ or higher
      e6-11 (SSRR) - Body ground Always 10 kΩ or higher
      e6-1 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (RECLINING MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      f1-2 - f1-3 Reclining switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

    OK

  11. CHECK SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY


    1. Temporarily replace the separate type front seatback spring assembly with a new or normally functioning one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Driver Seat > Clear DTCs

    3. Check for DTCs.

      Click here


      Body Electrical > Driver Seat > Trouble Codes
      Result
      Proceed to
      DTC B2658 is not output
      DTC B2658 is output

    DTC B2658 is not output

    END (SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY WAS DEFECTIVE)

    DTC B2658 is output

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here