FRONT POWER SEAT CONTROL SYSTEM(w/ Memory), Diagnostic DTC:B2650

DTC Code DTC Name
B2650 Slide Sensor Malfunction

DESCRIPTION

When the front power seat switch LH*1 or RH*2 does not receive a sensor signal despite forward or backward movement of the seat by power seat motor operation, this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2650 Slide Sensor Malfunction The forward and backward lock detection position of the sensor is the same.

  • Front power seat switch LH*1

  • Front power seat switch RH*2

  • Slide motor (Front seat adjuster assembly LH)*1

  • Slide motor (Front seat adjuster assembly RH)*2

  • Wire harness or connector

WIRING DIAGRAM

A01MJ4LE59
A01MJ4LE60

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Driver Seat > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Driver Seat > Trouble Codes
      OK
      DTC B2650 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. PERFORM ACTIVE TEST USING TECHSTREAM (SEAT SLIDE OPERATION)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Driver Seat / Active Test.

    5. Perform the Active Test according to the display on the Techstream.


      Body Electrical > Driver Seat > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Seat Slide Operation Seat slide operation OFF/Rear/Front -

      Body Electrical > Driver Seat > Active Test
      Tester Display
      Seat Slide Operation
      OK
      Motor operates normally.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    B

    CHECK POWER SEAT SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT) Click here

    C

    INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH) Click here

    D

    INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    A

  4. CHECK POWER SEAT SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01MFP3C04
      *a

      Front view of wire harness connector

      (to Slide Motor (Front Seat Adjuster Assembly LH))

      Disconnect the slide motor (front seat adjuster assembly LH) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      a8-2 (O/P) - a8-3 (GND) Slide switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  5. CHECK SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. A01MJP4C34
      *a

      Component with harness connected

      (Slide Motor (Front Seat Adjuster Assembly LH)

      Reconnect the slide motor (front seat adjuster assembly LH) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      a8-2 - Body ground Slide motor operating 4.5 to 4.8 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH LH Click here

    NG

    REPLACE SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH) Click here

  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))


    1. Disconnect the a10 front power seat switch LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a10-5 (SSRS) - a8-2 (O/P) Always Below 1 Ω
      a10-5 (SSRS) - Body ground Always 10 kΩ or higher
      a8-2 (O/P) - Body ground Always 10 kΩ or higher
      a10-1 (SGND) - a8-3 (GND) Always Below 1 Ω
      a10-1 (SGND) - Body ground Always 10 kΩ or higher
      a8-3 (GND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH LH Click here

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

  7. CHECK POWER SEAT SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01MFP3C05
      *a

      Front view of wire harness connector

      (to Slide Motor (Front Seat Adjuster Assembly RH))

      Disconnect the slide motor (front seat adjuster assembly RH) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Z1-2 (O/P) - Z1-3 (GND) Slide switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  8. CHECK SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. A01MJP4C35
      *a

      Component with harness connected

      (Slide Motor (Front Seat Adjuster Assembly RH)

      Reconnect the slide motor (front seat adjuster assembly RH) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Z1-2 - Body ground Slide motor operating 4.5 to 4.8 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH RH Click here

    NG

    REPLACE SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

  9. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH))


    1. Disconnect the Z5 front power seat switch RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z5-5 (SSRS) - Z1-2 (O/P) Always Below 1 Ω
      Z5-5 (SSRS) - Body ground Always 10 kΩ or higher
      Z1-2 (O/P) - Body ground Always 10 kΩ or higher
      Z5-1 (SGND) - Z1-3 (GND) Always Below 1 Ω
      Z5-1 (SGND) - Body ground Always 10 kΩ or higher
      Z1-3 (GND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH RH Click here

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

  10. INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Remove the front seat adjuster assembly LH.

      Click here

    2. Inspect the front seat adjuster assembly LH (slide motor).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH) Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY LH))


    1. Disconnect the a9 front power seat switch LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a9-3 (SLD+) - a8-4 (FWD) Always Below 1 Ω
      a9-3 (SLD+) - Body ground Always 10 kΩ or higher
      a8-4 (FWD) - Body ground Always 10 kΩ or higher
      a9-4 (SLD-) - a8-1 (BACK) Always Below 1 Ω
      a9-4 (SLD-) - Body ground Always 10 kΩ or higher
      a8-1 (BACK) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH LH Click here

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

  12. INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Remove the front seat adjuster assembly RH.

      Click here

    2. Inspect the front seat adjuster assembly RH (slide motor).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY RH))


    1. Disconnect the Z4 front power seat switch RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z4-3 (SLD+) - Z1-4 (FWD) Always Below 1 Ω
      Z4-3 (SLD+) - Body ground Always 10 kΩ or higher
      Z1-4 (FWD) - Body ground Always 10 kΩ or higher
      Z4-4 (SLD-) - Z1-1 (BACK) Always Below 1 Ω
      Z4-4 (SLD-) - Body ground Always 10 kΩ or higher
      Z1-1 (BACK) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT POWER SEAT SWITCH RH Click here

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR