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 if sensor voltage does not reach the designated voltage while the power seat slide motor assembly is operating.

DTC Code DTC Detection Condition Trouble Area
B2658 Malfunction in supply voltage for the seat slide control position sensor

  • Front power seat switch

  • Power seat slide motor assembly

  • Harness or connector

WIRING DIAGRAM

A01NEF8E04
A01NEF8E05

INSPECTION PROCEDURE

Tech Tips

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK FOR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Driver Seat / Trouble Codes.

    5. Clear the DTC Click here.

    6. Recheck for DTC B2658.

      Result
      Result Proceed to
      B2658 output from driver seat ECU A
      B2658 output from front passenger seat ECU B

    B

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

    A

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


    1. A01NFLBE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch LH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly LH)

      for LHD.


      1. Disconnect the a8 connector from the front power seat switch LH.

      2. Disconnect the a13 connector from the power seat slide motor assembly LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        a8-3 (PVCC) - a13-5 (VCC) Always Below 1 Ω
        a8-2 (SSRS) - a13-2 (O/P) Always Below 1 Ω
        a8-1 (SGND) - a13-6 (GND) Always Below 1 Ω
        a8-3 (PVCC) - Body ground Always 10 kΩ or higher
        a8-2 (SSRS) - Body ground Always 10 kΩ or higher
        a8-1 (SGND) - Body ground Always 10 kΩ or higher
    2. A01NFLBE06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch RH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly RH)

      for RHD.


      1. Disconnect the Z25 connector from the front power seat switch RH.

      2. Disconnect the Z24 connector from the power seat slide motor assembly RH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Z25-3 (PVCC) - Z24-5 (VCC) Always Below 1 Ω
        Z25-2 (SSRS) - Z24-2 (O/P) Always Below 1 Ω
        Z25-1 (SGND) - Z24-6 (GND) Always Below 1 Ω
        Z25-3 (PVCC) - Body ground Always 10 kΩ or higher
        Z25-2 (SSRS) - Body ground Always 10 kΩ or higher
        Z25-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK POWER SEAT SLIDE MOTOR ASSEMBLY (DRIVER SIDE) (SEAT SLIDE POSITION SENSOR)


    1. A01NGHFE04
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly LH)

      for LHD.


      1. Reconnect the a8 connector to the front power seat switch LH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        a13-5 (VCC) - a13-6 (GND) Slide switch on 5.5 to 6.5 V
    2. A01NGHFE05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly RH)

      for RHD.


      1. Reconnect the Z25 connector to the front power seat switch RH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        Z24-5 (VCC) - Z24-6 (GND) Slide switch on 5.5 to 6.5 V

    NG

    REPLACE FRONT POWER SEAT SWITCH (DRIVER SIDE) Click here

    OK

    REPLACE POWER SEAT SLIDE MOTOR ASSEMBLY (DRIVER SIDE) Click here

  4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE))


    1. A01NFLBE11
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch RH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly RH)

      for LHD.


      1. Disconnect the Z25 connector from the front power seat switch RH.

      2. Disconnect the Z24 connector from the power seat slide motor assembly RH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Z25-3 (PVCC) - Z24-5 (VCC) Always Below 1 Ω
        Z25-2 (SSRS) - Z24-2 (O/P) Always Below 1 Ω
        Z25-1 (SGND) - Z24-6 (GND) Always Below 1 Ω
        Z25-3 (PVCC) - Body ground Always 10 kΩ or higher
        Z25-2 (SSRS) - Body ground Always 10 kΩ or higher
        Z25-1 (SGND) - Body ground Always 10 kΩ or higher
    2. A01NFLBE12
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Power Seat Switch LH)
      *2

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly LH)

      for RHD.


      1. Disconnect the a8 connector from the front power seat switch LH.

      2. Disconnect the a13 connector from the power seat slide motor assembly LH.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        a8-3 (PVCC) - a13-5 (VCC) Always Below 1 Ω
        a8-2 (SSRS) - a13-2 (O/P) Always Below 1 Ω
        a8-1 (SGND) - a13-6 (GND) Always Below 1 Ω
        a8-3 (PVCC) - Body ground Always 10 kΩ or higher
        a8-2 (SSRS) - Body ground Always 10 kΩ or higher
        a8-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE) (SEAT SLIDE POSITION SENSOR)


    1. A01NGHFE10
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly RH)

      for LHD.


      1. Reconnect the Z25 connector to the front power seat switch RH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        Z24-5 (VCC) - Z24-6 (GND) Slide switch on 5.5 to 6.5 V
    2. A01NGHFE11
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Seat Slide Motor Assembly LH)

      for RHD.


      1. Reconnect the a8 connector to the front power seat switch LH.

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        a13-5 (VCC) - a13-6 (GND) Slide switch on 5.5 to 6.5 V

    NG

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

    OK

    REPLACE POWER SEAT SLIDE MOTOR ASSEMBLY (FRONT PASSENGER SIDE) Click here