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.

  • Front power seat switch LH (w/ Memory)

  • Separate type front seat cushion assembly

  • Separate type front seatback assembly

  • Wire harness or connector

WIRING DIAGRAM

A01EX9RE41

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - SLIDE MOTOR) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - SLIDE MOTOR)


    1. Disconnect the e12 front power seat switch LH (w/ Memory) connector.

    2. Disconnect the e8 slide motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e12-5 (SSRS) - e8-2 Always Below 1 Ω
      e12-1 (SGND) - e8-3 Always Below 1 Ω
      e12-5 (SSRS) - e12-1 (SGND) Always 10 kΩ or higher
      e12-5 (SSRS) - Body ground Always 10 kΩ or higher
      e12-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      e8-2 - e8-3 Sliding switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - FRONT VERTICAL MOTOR)


    1. Disconnect the e9 front vertical motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e12-3 (SSFV) - e9-2 Always Below 1 Ω
      e12-1 (SGND) - e9-3 Always Below 1 Ω
      e12-3 (SSFV) - e12-1 (SGND) Always 10 kΩ or higher
      e12-3 (SSFV) - Body ground Always 10 kΩ or higher
      e12-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK FRONT POWER SEAT SWITCH LH (W/ MEMORY) (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
      e9-2 - e9-3 Front vertical switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - LIFTER MOTOR)


    1. Disconnect the e10 lifter motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e12-4 (SSRL) - e10-2 Always Below 1 Ω
      e12-1 (SGND) - e10-3 Always Below 1 Ω
      e12-4 (SSRL) - e12-1 (SGND) Always 10 kΩ or higher
      e12-4 (SSRL) - Body ground Always 10 kΩ or higher
      e12-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      e10-2 - e10-3 Lifter switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

    OK

  8. REPLACE SEPARATE TYPE FRONT SEAT CUSHION ASSEMBLY


    1. Replace the separate type front seat cushion assembly 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 (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - RECLINING MOTOR) Click here

    OK

    END (SEPARATE TYPE FRONT SEAT CUSHION ASSEMBLY WAS DEFECTIVE)

  9. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - RECLINING MOTOR)


    1. Disconnect the e12 front power seat switch LH (w/ Memory) connector.

    2. Disconnect the g3 reclining motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e12-11 (SSRR) - g3-2 Always Below 1 Ω
      e12-1 (SGND) - g3-3 Always Below 1 Ω
      e12-11 (SSRR) - e12-1 (SGND) Always 10 kΩ or higher
      e12-11 (SSRR) - Body ground Always 10 kΩ or higher
      e12-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK FRONT POWER SEAT SWITCH LH (W/ MEMORY) (RECLINING MOTOR CIRCUIT)


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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      g3-2 - g3-3 Reclining switch on 4.8 to 5.1 V

    NG

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

    OK

  11. REPLACE SEPARATE TYPE FRONT SEATBACK ASSEMBLY


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

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B2658 is not output.

    NG

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

    OK

    END (SEPARATE TYPE FRONT SEATBACK ASSEMBLY WAS DEFECTIVE)