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

DTC Code DTC Name
B2650 Slide Sensor Malfunction

DESCRIPTION

When the position control ECU assembly (driver seat) does not receive a slide motor position sensor signal despite the seat having been moved forward or backward by power seat motor operation, this DTC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2650 Slide Sensor Malfunction Slide motor position sensor signal not received when power seat moved forward or backward

  • Position control ECU assembly (driver seat)

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

  • Wire harness or connector

WIRING DIAGRAM

B0087WOE04

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.


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

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.


      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 (SEAT SLIDE OPERATION)


    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
      Slide 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 ASSEMBLY (DRIVER SEAT) (SLIDE MOTOR CIRCUIT)


    1. Disconnect the b19*1 or a5*2 slide motor (front seat adjuster assembly (driver seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      b19-2 - b19-3 Slide switch on 4.8 to 5.1 V
      for RHD
      Tester Connection Condition Specified Condition
      a5-2 - a5-3 Slide switch on 4.8 to 5.1 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU 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. B0088NGC65
      *A for LHD
      *B for RHD
      *a

      Component with harness connected

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

      Reconnect the b19*1 or a5*2 slide motor (front seat adjuster assembly (driver seat)) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      b19-2 - Body ground Slide motor operating 4.5 to 4.8 V
      for RHD
      Tester Connection Condition Specified Condition
      a5-2 - Body ground Slide motor operating 4.5 to 4.8 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU 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 ASSEMBLY (DRIVER SEAT) - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY (DRIVER SEAT)))


    1. Disconnect the b25*1 or a12*2 position control ECU 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
      b25-26 (SSRS) - b19-2 Always Below 1 Ω
      b25-26 (SSRS) or b19-2 - Body ground Always 10 kΩ or higher
      b25-12 (SENG) - b19-3 Always Below 1 Ω
      b25-12 (SENG) or b19-3 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      a12-26 (SSRS) - a5-2 Always Below 1 Ω
      a12-26 (SSRS) or a5-2 - Body ground Always 10 kΩ or higher
      a12-12 (SENG) - a5-3 Always Below 1 Ω
      a12-12 (SENG) or a5-3 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU 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 slide motor (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 ASSEMBLY (DRIVER SEAT) - SLIDE MOTOR (FRONT SEAT ADJUSTER ASSEMBLY (DRIVER SEAT)))


    1. Disconnect the b23*1 or a10*2 position control ECU 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
      b23-1 (SLD+) - b19-4 Always Below 1 Ω
      b23-1 (SLD+) or b19-4 - Body ground Always 10 kΩ or higher
      b23-5 (SLD-) - b19-1 Always Below 1 Ω
      b23-5 (SLD-) or b19-1 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      a10-1 (SLD+) - a5-4 Always Below 1 Ω
      a10-1 (SLD+) or a5-4 - Body ground Always 10 kΩ or higher
      a10-5 (SLD-) - a5-1 Always Below 1 Ω
      a10-5 (SLD-) or a5-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY (DRIVER SEAT) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR