FRONT POWER SEAT CONTROL SYSTEM, Diagnostic DTC:B2650

DTC Code DTC Name
B2650 Slide Sensor Malfunction

DESCRIPTION

When the position control ECU and switch assembly (driver seat) 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.

  • Position control ECU and switch assembly (driver seat)

  • Slide motor (Front seat adjuster assembly (driver seat))

  • Wire harness or connector

WIRING DIAGRAM

B002EZ9E01
for LHD
*a Slide Motor
*b Front Seat Adjuster Assembly LH
*c Position Control ECU and Switch Assembly LH
B002EZ9E02
for RHD
*a Slide Motor
*b Front Seat Adjuster Assembly RH
*c Position Control ECU and Switch Assembly RH

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 GTS (SLIDE MOTOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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 GTS.


      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
      Proceed to
      OK
      NG

    NG

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

    OK

  4. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) (SLIDE MOTOR CIRCUIT)


    1. B002DO9C01
      *A for LHD
      *B for RHD
      *a

      Front view of harness connector

      Slide Motor (Front Seat Adjuster Assembly (Driver Seat))

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

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      g1-2 - g1-3 Slide switch on 4.8 to 5.1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      f17-2 - f17-3 Slide switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY (DRIVER SEAT))) Click here

    OK

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


    1. B002E7UC42
      *A for LHD
      *B for RHD
      *a

      Component with harness connected

      (Slide Motor (Front Seat Adjuster Assembly (Driver Seat))

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

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      g1-2 - Body ground Slide motor operating 4.5 to 4.8 V
      for RHD
      Tester Connection Condition Specified Condition
      f17-2 - Body ground Slide motor operating 4.5 to 4.8 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) Click here

    NG

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

  6. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY (DRIVER SEAT)))


    1. Disconnect the g5*1 or f5*2 position control ECU and switch assembly (driver seat) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      g5-5 (SSRS) - g1-2 Always Below 1 Ω
      g5-5 (SSRS) or g1-2 - Body ground Always 10 kΩ or higher
      g5-1 (SGND) - g1-3 Always Below 1 Ω
      g5-1 (SGND) or g1-3 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      f5-5 (SSRS) - f17-2 Always Below 1 Ω
      f5-5 (SSRS) or f17-2 - Body ground Always 10 kΩ or higher
      f5-1 (SGND) - f17-3 Always Below 1 Ω
      f5-1 (SGND) or f17-3 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY (DRIVER SEAT))


    1. Remove the front seat adjuster assembly (driver seat).

      Click here

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  8. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY (DRIVER SEAT)))


    1. Disconnect the g4*1 or f4*2 position control ECU and switch assembly (driver seat) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      g4-3 (SLD+) - g1-4 Always Below 1 Ω
      g4-3 (SLD+) or g1-4 - Body ground Always 10 kΩ or higher
      g4-4 (SLD-) - g1-1 Always Below 1 Ω
      g4-4 (SLD-) or g1-1 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      f4-3 (SLD+) - f17-4 Always Below 1 Ω
      f4-3 (SLD+) or f17-4 - Body ground Always 10 kΩ or higher
      f4-4 (SLD-) - f17-1 Always Below 1 Ω
      f4-4 (SLD-) or f17-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SEAT) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR