FRONT POWER SEAT CONTROL SYSTEM (for Driver Side), Diagnostic DTC:B2650

DTC Code DTC Name
B2650 Slide Sensor Malfunction

DESCRIPTION

When the position control ECU and switch assembly does not receive a sensor signal despite forward or backward movement of the seat by power seat motor operation, this DTC is stored.

DTC Code DTC Detection Condition Trouble Area
B2650 Sensor's forward and backward lock detection position is the same

  • Position control ECU and switch assembly

  • Front seat frame with adjuster assembly

  • Harness or connector

WIRING DIAGRAM

A01CG4RE07
A01CG4RE08

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / D-Seat / DTC.

    5. Clear the DTCs Click here.

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B2650 is output A
      DTC B2650 is not output B

    B

    USE SIMULATION METHOD TO CHECK

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Enter the following menus: Body / D-Seat / Active Test.

    2. Perform the Active Test according to the display on the intelligent tester.

      D-Seat
      Tester Display Test Part Control Range Diagnostic Note
      Seat Slide Operation Seat sliding operation Front / OFF / Rear -
      OK
      Motor operates normally.

    NG

    INSPECT FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY (SLIDE MOTOR) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - SLIDE MOTOR)


    1. Disconnect the V16*1 or W16*2 connector from the position control ECU and switch assembly.

    2. Disconnect the V14*1, W15*2 connector from the slide motor.

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


      • *1: for RHD

      • *2: for LHD

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      V16-3 (PVCC) - V14-5 (VCC) Always Below 1 Ω
      V16-2 (SSRS) - V14-2 (O/P) Always Below 1 Ω
      V16-1 (SGND) - V14-6 (GND) Always Below 1 Ω
      V16-3 (PVCC) - Body ground Always 10 kΩ or higher
      V16-2 (SSRS) - Body ground Always 10 kΩ or higher
      V16-1 (SGND) - Body ground Always 10 kΩ or higher
      for LHD
      Tester Connection Condition Specified Condition
      W17-3 (PVCC) - W15-5 (VCC) Always Below 1 Ω
      W17-2 (SSRS) - W15-2 (O/P) Always Below 1 Ω
      W17-1 (SGND) - W15-6 (GND) Always Below 1 Ω
      W17-3 (PVCC) - Body ground Always 10 kΩ or higher
      W17-2 (SSRS) - Body ground Always 10 kΩ or higher
      W17-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Reconnect the W17 connector to the position control ECU and switch assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      W15-5 (VCC) - W15-6 (GND) Slide switch on 5.5 to 6.5 V

    NG

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

    OK

    REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY Click here

  5. INSPECT FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY (SLIDE MOTOR)


    1. Disconnect the V14*1, W15*2 connector from the slide motor.

    2. A01CFIRE02
      Text in Illustration
      *A for RHD
      *B for LHD
      *a

      Component without harness connected

      (Front Seat Frame with Adjuster Assembly (Slide Motor))

      Check if the seat frame moves smoothly when the battery is connected to the slide motor connector terminals.


      • *1: for RHD

      • *2: for LHD

      OK
      for RHD
      Measurement Condition Operational Direction

      Battery positive (+) → 3 (FWD)

      Battery negative (-) → 4 (BACK)

      		 Forward

      Battery positive (+) → 4 (BACK)

      Battery negative (-) → 3 (FWD)

      		 Backward
      for LHD
      Measurement Condition Operational Direction

      Battery positive (+) → 3 (FWD)

      Battery negative (-) → 4 (BACK)

      		 Forward

      Battery positive (+) → 4 (BACK)

      Battery negative (-) → 3 (FWD)

      		 Backward

    NG

    REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY Click here

    OK

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


    1. Disconnect the V15*1 or W16*2 connector from the position control ECU and switch assembly.


      • *1: for RHD

      • *2: for LHD

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      V15-2 (SLD+) - V14-3 (FWD) Always Below 1 Ω
      V15-4 (SLD-) - V14-4 (BACK) Always Below 1 Ω
      V15-2 (SLD+) - Body ground Always 10 kΩ or higher
      V15-4 (SLD-) - Body ground Always 10 kΩ or higher
      for LHD
      Tester Connection Condition Specified Condition
      W16-2 (SLD+) - W15-3 (FWD) Always Below 1 Ω
      W16-4 (SLD-) - W15-4 (BACK) Always Below 1 Ω
      W16-2 (SLD+) - Body ground Always 10 kΩ or higher
      W16-4 (SLD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here