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

DTC Code DTC Name
B2650 Slide Sensor Malfunction

DESCRIPTION


When the power seat switch assembly*1 or position control ECU assembly*2, *3 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 The forward and backward lock detection position of the sensor is the same.

  • Power seat switch assembly*1

  • Position control ECU assembly*2, *3

  • Front seat adjuster assembly RH (Slide motor)*1, *2

  • Front seat adjuster assembly LH (Slide motor)*3

  • Harness or connector

WIRING DIAGRAM


  1. for Driver Side (Standard Seat Type):

    A01FDO0E26

  2. for Driver Side (Sports Seat Type, Luxury Seat Type):

    A01FDO0E27

  3. for Front Passenger Side (Luxury Seat Type):

    A01FDO0E28

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Check the parts which the DTCs have been output from Click here.

      Result
      Result Proceed to
      DTC output from "Driver Seat" A
      DTC output from "Passenger Seat" B

    B

    PERFORM ACTIVE TEST USING GTS (SEAT SLIDE OPERATION) Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (SEAT SLIDE OPERATION)


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Body Electrical / Driver Seat / Active Test.

    6. Perform the Active Test according to the display on the GTS.

      Driver Seat
      Tester Display Test Part Control Range Diagnostic Note
      Seat Slide Operation Seat sliding operation Front / OFF / Rear -
      OK
      Motor operates normally.
      Result
      Result Proceed to
      OK (for Standard Seat Type) A
      OK (for Sports Seat Type, Luxury Seat Type) B
      NG C

    B

    CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT) Click here

    C

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

    A

  3. CHECK POWER SEAT SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FDXZE56
      Text in Illustration
      *a

      Front view of harness connector

      (to Front Seat Adjuster Assembly RH [Slide Motor])

      Disconnect the slide motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - c6-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    OK

  4. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (SLIDE MOTOR)


    1. A01FFM9E78
      Text in Illustration
      *a

      Component with harness connected

      (Front Seat Adjuster Assembly RH [Slide Motor])

      Reconnect the slide motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - Body ground Sliding switch on 4.5 to 4.8 V

    NG

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

    OK

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c15 power seat switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c15-5 (SSRS) - c6-2 (O/P) Always Below 1 Ω
      c15-1 (SGND) - c6-3 (GND) Always Below 1 Ω
      c15-5 (SSRS) - Body ground Always 10 kΩ or higher
      c15-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

  6. CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FDXZE56
      Text in Illustration
      *a

      Front view of harness connector

      (to Front Seat Adjuster Assembly RH [Slide Motor])

      Disconnect the slide motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - c6-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    OK

  7. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (SLIDE MOTOR)


    1. A01FFM9E78
      Text in Illustration
      *a

      Component with harness connected

      (Front Seat Adjuster Assembly RH [Slide Motor])

      Reconnect the slide motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      c6-2 (O/P) - Body ground Sliding switch on 4.5 to 4.8 V
      Result
      Result Proceed to
      OK (for Sports Seat Type) A
      OK (for Luxury Seat Type) B
      NG (for Sports Seat Type) C
      NG (for Luxury Seat Type) D

    B

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    C

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

    D

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

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

  8. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c2 and c3 position control ECU assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c3-8 (SSRS) - c6-2 (O/P) Always Below 1 Ω
      c2-20 (SGND) - c6-3 (GND) Always Below 1 Ω
      c3-8 (SSRS) - Body ground Always 10 kΩ or higher
      c2-20 (SGND) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for Sports Seat Type) A
      OK (for Luxury Seat Type) B
      NG C

    B

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

  9. INSPECT FRONT SEAT ADJUSTER ASSEMBLY RH (SLIDE MOTOR)


    1. A01FFTWE10
      Text in Illustration
      *a

      Component without harness connected

      (Front Seat Adjuster Assembly RH [Slide Motor])

      Disconnect the c6 slide motor connector.

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

      OK
      Measurement Condition Operational Direction

      Battery positive (+) → 4 (FWD)

      Battery negative (-) → 1 (BACK)

      		 Forward

      Battery positive (+) → 1 (BACK)

      Battery negative (-) → 4 (FWD)

      		 Backward
      Result
      Result Proceed to
      OK (for Standard Seat Type) A
      OK (for Sports Seat Type, Luxury Seat Type) B
      NG (for Standard Seat Type) C
      NG (for Sports Seat Type) D
      NG (for Luxury Seat Type) E

    B

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH) Click here

    C

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

    D

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

    E

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

    A

  10. CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c17 power seat switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c17-3 (SLD+) - c6-4 (FWD) Always Below 1 Ω
      c17-4 (SLD-) - c6-1 (BACK) Always Below 1 Ω
      c17-3 (SLD+) - Body ground Always 10 kΩ or higher
      c17-4 (SLD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

  11. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)


    1. Disconnect the c5 position control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c5-6 (SLD+) - c6-4 (FWD) Always Below 1 Ω
      c5-3 (SLD-) - c6-1 (BACK) Always Below 1 Ω
      c5-6 (SLD+) - Body ground Always 10 kΩ or higher
      c5-3 (SLD-) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for Sports Seat Type) A
      OK (for Luxury Seat Type) B
      NG C

    B

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

  12. PERFORM ACTIVE TEST USING GTS (SEAT SLIDE OPERATION)


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Body Electrical / Passenger Seat / Active Test.

    6. Perform the Active Test according to the display on the GTS.

      Passenger 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 ADJUSTER ASSEMBLY LH (SLIDE MOTOR) Click here

    OK

  13. CHECK POSITION CONTROL ECU ASSEMBLY (SLIDE MOTOR CIRCUIT)


    1. A01FDXZE57
      Text in Illustration
      *a

      Front view of harness connector

      (to Front Seat Adjuster Assembly LH [Slide Motor])

      Disconnect the slide motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d7-2 (VCC) - d7-3 (GND) Sliding switch on 4.8 to 5.1 V

    NG

    CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH) Click here

    OK

  14. CHECK FRONT SEAT ADJUSTER ASSEMBLY LH (SLIDE MOTOR)


    1. A01FFM9E79
      Text in Illustration
      *a

      Component with harness connected

      (Front Seat Adjuster Assembly LH [Slide Motor])

      Reconnect the slide motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      d7-2 (VCC) - Body ground Sliding switch on 4.5 to 4.8 V

    NG

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

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

  15. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d4 and d5 position control ECU assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d4-8 (SSRS) - d7-2 (VCC) Always Below 1 Ω
      d5-20 (SGND) - d7-3 (GND) Always Below 1 Ω
      d4-8 (SSRS) - Body ground Always 10 kΩ or higher
      d5-20 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here

  16. INSPECT FRONT SEAT ADJUSTER ASSEMBLY LH (SLIDE MOTOR)


    1. A01FFTWE10
      Text in Illustration
      *a

      Component without harness connected

      (Front Seat Adjuster Assembly LH [Slide Motor])

      Disconnect the d7 slide motor connector.

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

      OK
      Measurement Condition Operational Direction

      Battery positive (+) → 4 (FWD)

      Battery negative (-) → 1 (BACK)

      		 Forward

      Battery positive (+) → 1 (BACK)

      Battery negative (-) → 4 (FWD)

      		 Backward

    NG

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

    OK

  17. CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY LH)


    1. Disconnect the d2 position control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      d2-6 (SLD+) - d7-4 (FWD) Always Below 1 Ω
      d2-3 (SLD-) - d7-1 (BACK) Always Below 1 Ω
      d2-6 (SLD+) - Body ground Always 10 kΩ or higher
      d2-3 (SLD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POSITION CONTROL ECU ASSEMBLY Click here