REAR POWER SEAT CONTROL SYSTEM, Diagnostic DTC:B2650

DTC Code DTC Name
B2650 Slide Sensor Malfunction

DESCRIPTION

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

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

  • Position control ECU

  • Rear No. 1 seat adjuster assembly

  • Rear No. 2 seat adjuster assembly

  • Harness or connector

WIRING DIAGRAM

A01GMYHE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. DTC output area check


      1. Using the intelligent tester, determine the area that output the DTC.

        Result
        Result Proceed to
        B2650 output from rear left seat ECU A
        B2650 output from rear right seat ECU B

    B

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (POWER SEAT MOTOR FUNCTION) Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (POWER SEAT MOTOR FUNCTION)


    1. Select the Active Test, use the intelligent tester to generate a control command, and then check the power seat motor function.

      Rear Left Seat
      Tester Display Test Part Control Range
      Seat Slide Operation Seat sliding operation FRONT / REAR
      OK
      Motor operates normally.

    NG

    INSPECT REAR NO. 2 SEAT ADJUSTER ASSEMBLY (POWER SEAT MOTOR) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU LH - REAR POWER SEAT MOTOR LH AND BODY GROUND)


    1. A01GLLME01

      Disconnect the f41 ECU connector.

    2. Disconnect the f33 motor connector.

    3. Measure the resistance according to the values in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f41-17 (PVCC) - f33-8 (PVCC) Always Below 1 Ω
      f41-5 (SSRS) - f33-6 (SSRS) Always Below 1 Ω
      f41-23 (SGND) - f33-7 (GND) Always Below 1 Ω
      f41-17 (PVCC) - Body ground Always 10 kΩ or higher
      f41-5 (SSRS) - Body ground Always 10 kΩ or higher
      f41-23 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK REAR NO. 2 SEAT ADJUSTER ASSEMBLY (POSITION CONTROL SENSOR)


    1. A01GN49E01

      Disconnect the f33 motor connector.

    2. Measure the voltage according to the values in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      f33-8 (PVCC) - f33-7 (GND) Slide switch ON 7.2 to 8.8 V
      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE POSITION CONTROL ECU LH Click here

    C

    REPLACE POSITION CONTROL ECU LH Click here

    A

  5. CHECK REAR NO. 2 SEAT ADJUSTER ASSEMBLY (POSITION CONTROL SENSOR)


    1. A01GMBRE04

      Reconnect the f33 motor connector.

    2. Measure the voltage according to the value in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      f33-6 (SSRS) - Body ground Slide switch ON 0 to 8 V
      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR NO. 2 SEAT ADJUSTER ASSEMBLY Click here

    C

    REPLACE REAR NO. 2 SEAT ADJUSTER ASSEMBLY Click here

    A

  6. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Recheck the DTC.

      OK
      DTC B2650 is not output.
      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE POSITION CONTROL ECU LH Click here

    C

    REPLACE POSITION CONTROL ECU LH Click here

    A

    END (SYSTEM RETURN TO NORMAL)

  7. INSPECT REAR NO. 2 SEAT ADJUSTER ASSEMBLY (POWER SEAT MOTOR)

    A01GMZQE06

    1. Disconnect the motor connector.

    2. Check operation of the power seat motor (slide motor).


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

        OK
        Measurement Condition Operational Direction

        Battery positive (+) → 13

        Battery negative (-) → 9

        		 Forward

        Battery positive (+) → 9

        Battery negative (-) → 13

        		 Backward
        Result
        Result Proceed to
        OK A
        NG (w/o Ottoman) B
        NG (w/ Ottoman) C

    B

    REPLACE REAR NO. 2 SEAT ADJUSTER ASSEMBLY Click here

    C

    REPLACE REAR NO. 2 SEAT ADJUSTER ASSEMBLY Click here

    A

  8. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU LH - REAR POWER SEAT MOTOR LH)


    1. A01GJUKE04

      Disconnect the f24 ECU connector.

    2. Disconnect the f33 motor connector.

    3. Measure the resistance according to the value in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f24-3 (SLD+) - f33-13 (FWD) Always Below 1 Ω
      f24-8 (SLD-) - f33-9 (BACK) Always Below 1 Ω
      Result
      Result Proceed to
      OK (w/o Ottoman) A
      OK (w/ Ottoman) B
      NG C

    B

    REPLACE POSITION CONTROL ECU LH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POSITION CONTROL ECU LH Click here

  9. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (POWER SEAT MOTOR FUNCTION)


    1. Select the Active Test, use the intelligent tester to generate a control command, and then check the power seat motor function.

      Rear Right Seat
      Tester Display Test Part Control Range
      Seat Slide Operation Seat sliding operation FRONT / REAR
      OK
      Motor operates normally.

    NG

    INSPECT REAR NO. 1 SEAT ADJUSTER ASSEMBLY (POWER SEAT MOTOR) Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU RH - REAR POWER SEAT MOTOR RH AND BODY GROUND)


    1. A01GLLME02

      Disconnect the f38 ECU connector.

    2. Disconnect the f16 motor connector.

    3. Measure the resistance according to the values in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f38-17 (PVCC) - f16-8 (PVCC) Always Below 1 Ω
      f38-5 (SSRS) - f16-6 (SSRS) Always Below 1 Ω
      f38-23 (SGND) - f16-7 (GND) Always Below 1 Ω
      f38-17 (PVCC) - Body ground Always 10 kΩ or higher
      f38-5 (SSRS) - Body ground Always 10 kΩ or higher
      f38-23 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK REAR NO. 1 SEAT ADJUSTER ASSEMBLY (POSITION CONTROL SENSOR)


    1. A01GN49E02

      Disconnect the f16 motor connector.

    2. Measure the voltage according to the values in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      f16-8 (PVCC) - f16-7 (GND) Slide switch ON 7.2 to 8.8 V
      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE POSITION CONTROL ECU RH Click here

    C

    REPLACE POSITION CONTROL ECU RH Click here

    A

  12. CHECK REAR NO. 1 SEAT ADJUSTER ASSEMBLY (POSITION CONTROL SENSOR)


    1. A01GMBRE05

      Reconnect the f16 motor connector.

    2. Measure the voltage according to the value in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      f16-6 (SSRS) - Body ground Slide switch ON 0 to 8 V
      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR NO. 1 SEAT ADJUSTER ASSEMBLY Click here

    C

    REPLACE REAR NO. 1 SEAT ADJUSTER ASSEMBLY Click here

    A

  13. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Recheck the DTC.

      OK
      DTC B2650 is not output.
      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE POSITION CONTROL ECU RH Click here

    C

    REPLACE POSITION CONTROL ECU RH Click here

    A

    END (SYSTEM RETURN TO NORMAL)

  14. INSPECT REAR NO. 1 SEAT ADJUSTER ASSEMBLY (POWER SEAT MOTOR)

    A01GMZQE07

    1. Disconnect the motor connector.

    2. Check operation of the power seat motor (slide motor).


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

        OK
        Measurement Condition Operational Direction

        Battery positive (+) → 9

        Battery negative (-) → 13

        		 Forward

        Battery positive (+) → 13

        Battery negative (-) → 9

        		 Backward
        Result
        Result Proceed to
        OK A
        NG (w/o Ottoman) B
        NG (w/ Ottoman) C

    B

    REPLACE REAR NO. 1 SEAT ADJUSTER ASSEMBLY Click here

    C

    REPLACE REAR NO. 1 SEAT ADJUSTER ASSEMBLY Click here

    A

  15. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU RH - REAR POWER SEAT MOTOR RH)


    1. A01GJUKE05

      Disconnect the f4 ECU connector.

    2. Disconnect the f16 motor connector.

    3. Measure the resistance according to the values in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f4-3 (SLD+) - f16-9 (FWD) Always Below 1 Ω
      f4-8 (SLD-) - f16-13 (BACK) Always Below 1 Ω
      Result
      Result Proceed to
      OK (w/o Ottoman) A
      OK (w/ Ottoman) B
      NG C

    B

    REPLACE POSITION CONTROL ECU RH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POSITION CONTROL ECU RH Click here