FRONT 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 the seat by power seat motor operation, this DTC is output.

DTC Code DTC Detection Condition Trouble Area
B2650 The forward and backward lock detection position of the sensor is the same
  • Position control ECU

  • Power seat motor assembly (Slide motor)

  • Harness or connector

WIRING DIAGRAM

B0040QCE05

PROCEDURE


  1. 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.

      Driver Seat
      Tester Display Test Part Control Range Diagnostic Note
      Seat Slide Operation Seat sliding operation FRONT / OFF / REAR -
      OK
      Motor operates normally.

    NG
    OK
  2. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - POWER SEAT MOTOR)

    B0040H9E02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Position Control ECU)

    *4

    Front view of wire harness connector

    (to Power Seat Motor)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the O26*1 or O16*2 ECU connector.

    2. Disconnect the O19*1 or O9*2 motor connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O26-23 (PVCC) - O19-5 (VCC) Always Below 1 Ω
      O26-6 (SSRS) - O19-2 (O/P) Always Below 1 Ω
      O26-29 (SGND) - O19-6 (GND) Always Below 1 Ω
      O26-23 (PVCC) - Body ground Always 10 kΩ or higher
      O26-6 (SSRS) - Body ground Always 10 kΩ or higher
      O26-29 (SGND) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      O16-23 (PVCC) - O9-5 (VCC) Always Below 1 Ω
      O16-6 (SSRS) - O9-2 (O/P) Always Below 1 Ω
      O16-29 (SGND) - O9-6 (GND) Always Below 1 Ω
      O16-23 (PVCC) - Body ground Always 10 kΩ or higher
      O16-6 (SSRS) - Body ground Always 10 kΩ or higher
      O16-29 (SGND) - Body ground Always 10 kΩ or higher

    NG
    OK
  3. CHECK POSITION CONTROL ECU ASSEMBLY

    B0040JTE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Power Seat Motor)


    1. Disconnect the O19*1 or O9*2 motor 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 Switch Condition Specified Condition
      O19-5 (VCC) - O19-6 (GND) Sliding switch on 5.5 to 6.5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      O9-5 (VCC) - O9-6 (GND) Sliding switch on 5.5 to 6.5 V

    NG
    OK
  4. CHECK POWER SEAT MOTOR ASSEMBLY (POSITION CONTROL SENSOR)

    B0040LNE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Component with harness connected

    (Power Seat Motor)


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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      O19-2 (O/P) - O19-6 (GND) Sliding switch on 0 to 6.5 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      O9-2 (O/P) - O9-6 (GND) Sliding switch on 0 to 6.5 V

    NG
    OK
  5. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Recheck for DTCs Click here.

      OK
      DTC B2650 is not output.

    OK
    NG
  6. INSPECT POWER SEAT MOTOR ASSEMBLY

    B0040M6E01

    1. Remove the power seat motor assembly (slide motor).

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

      OK
      for LHD
      Measurement Condition Specified Condition

      Battery positive (+) → 3 (FWD)

      Battery negative (-) → 4 (BACK)

      Seat adjuster moves forward

      Battery positive (+) → 4 (BACK)

      Battery negative (-) → 3 (FWD)

      Seat adjuster moves backward
      for RHD
      Measurement Condition Specified Condition

      Battery positive (+) → 4 (FWD)

      Battery negative (-) → 3 (BACK)

      Seat adjuster moves forward

      Battery positive (+) → 3 (BACK)

      Battery negative (-) → 4 (FWD)

      Seat adjuster moves backward

    NG
    OK
  7. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - POWER SEAT MOTOR)

    B0040NAE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Position Control ECU)

    *4

    Front view of wire harness connector

    (to Power Seat Motor)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the O27*1 or O17*2 ECU connector.

    2. Disconnect the O19*1 or O9*2 motor connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O27-2 (SLD+) - O19-3 (FWD) Always Below 1 Ω
      O27-3 (SLD-) - O19-4 (BACK) Always Below 1 Ω
      O27-2 (SLD+) - Body ground Always 10 kΩ or higher
      O27-3 (SLD-) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      O17-2 (SLD+) - O9-4 (FWD) Always Below 1 Ω
      O17-3 (SLD-) - O9-3 (BACK) Always Below 1 Ω
      O17-2 (SLD+) - Body ground Always 10 kΩ or higher
      O17-3 (SLD-) - Body ground Always 10 kΩ or higher

    OK
    NG