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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Front Power Seat Control (Diagnostic Codes & Symptom Tests) >> Front Power Seat Control System >> DTC B2650: Slide Sensor Malfunction >> Procedure

DTC B2650: Slide Sensor Malfunction: Procedure

  1. CHECK FOR DTC 
    1. DTC output area check
      1. Using the Techstream, determine the area that output the DTC.

        Result

        Result Proceed to
        B2650 output from driver seat ECU A
        B2650 output from passenger seat ECU B

    B → See step   9 

    A: Go to next step 

  2. PERFORM ACTIVE TEST USING TECHSTREAM (POWER SEAT MOTOR FUNCTION) 
    1. Select the Active Test, use the Techstream to generate a control command, and then check the power seat motor function.
      DRIVER SEAT

      Tester Display Test Part Control Range
      Seat Slide Operation Seat sliding operation FRONT / REAR

      OK

      Motor operates normally.

    NG → See step   7 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT MOTOR AND BODY GROUND) 
    1. Disconnect the e46 switch connector.
      Fig 1: Identifying e46 Switch & e63 Motor Connector
      GTY264651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the e63 motor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      e46-8 (PVCC) - e63-5 (VCC) Always Below 1 Ω
      e46-23 (SSRS) - e63-2 (O/P) Always Below 1 Ω
      e46-18 (SGND) - e63-6 (GND) Always Below 1 Ω
      e46-8 (PVCC) - Body ground Always 10 kΩ or higher
      e46-23 (SSRS) - Body ground Always 10 kΩ or higher
      e46-18 (SGND) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK FRONT SEAT ADJUSTER ASSEMBLY LH (POSITION CONTROL SENSOR) 
    1. Disconnect the e63 motor connector.
      Fig 2: Identifying e63 Motor Connector
      GTY272495Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      e63-5 (VCC) - e63-6 (GND) Sliding switch signal ON 7.2 to 8.8 V

    NG → See step   16 

    OK: Go to next step 

  5. CHECK FRONT SEAT ADJUSTER ASSEMBLY LH (POSITION CONTROL SENSOR) 
    1. Reconnect the e63 motor connector.
      Fig 3: Identifying e63 Motor Connector
      GTY254687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      e63-2 (O/P) - Body ground Sliding switch signal ON 0 to 8 V

    NG → See step   17 

    OK: Go to next step 

  6. CHECK FOR DTC 
    1. Clear the DTC. Refer to DTC CHECK / CLEAR .
    2. Recheck the DTC.

      OK

      DTC B2650 is not output.

    NG → See step   18 

    OK → END (SYSTEM RETURNS TO NORMAL) 

  7. INSPECT FRONT SEAT ADJUSTER ASSEMBLY LH (POWER SEAT MOTOR) 
    1. Check operation of the power seat motor (slide motor).
      Fig 4: Identifying Power Seat Motor Connector
      GTY262269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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 (+) → 4
        Battery negative (-) → 3        		 Forward
        Battery positive (+) → 3
        Battery negative (-) → 4        		 Backward

    NG → See step   19 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT MOTOR) 
    1. Disconnect the e46 switch connector.
      Fig 5: Identifying e46 Switch Connector
      GTY283963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the e63 motor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      e46-12 (SLD+) - e63-4 (FWD) Always Below 1 Ω
      e46-11 (SLD-) - e63-3 (BACK) Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   20 

  9. PERFORM ACTIVE TEST USING TECHSTREAM (POWER SEAT MOTOR FUNCTION) 
    1. Select the Active Test, use the Techstream to generate a control command, and then check the power seat motor function.
      PASSENGER SEAT

      Tester Display Test Part Control Range
      Seat Slide Operation Seat sliding operation FRONT / REAR

      OK

      Motor operates normally.

    NG → See step   14 

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT MOTOR AND BODY GROUND) 
    1. Disconnect the e20 switch connector.
      Fig 6: Identifying e20 Switch & e59 Motor Connector
      GTY264649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the e59 motor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      e20-8 (PVCC) - e59-5 (VCC) Always Below 1 Ω
      e20-23 (SSRS) - e59-2 (O/P) Always Below 1 Ω
      e20-18 (SGND) - e59-6 (GND) Always Below 1 Ω
      e20-8 (PVCC) - Body ground Always 10 kΩ or higher
      e20-23 (SSRS) - Body ground Always 10 kΩ or higher
      e20-18 (SGND) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  11. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (POSITION CONTROL SENSOR) 
    1. Disconnect the e59 motor connector.
      Fig 7: Identifying e59 Motor Connector
      GTY272496Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      e59-5 (VCC) - e59-6 (GND) Sliding switch signal ON 7.2 to 8.8 V

    NG → See step   21 

    OK: Go to next step 

  12. CHECK FRONT SEAT ADJUSTER ASSEMBLY RH (POSITION CONTROL SENSOR) 
    1. Reconnect the e59 motor connector.
      Fig 8: Identifying e59 Motor Connector
      GTY281657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      e59-2 (O/P) - Body ground Sliding switch signal ON 0 to 8 V

    NG → See step   22 

    OK: Go to next step 

  13. CHECK FOR DTC 
    1. Clear the DTC. Refer to DTC CHECK / CLEAR .
    2. Recheck the DTC.

      OK

      DTC B2650 is not output.

    NG → See step   23 

    OK → END (SYSTEM RETURNS TO NORMAL) 

  14. INSPECT FRONT SEAT ADJUSTER ASSEMBLY RH (POWER SEAT MOTOR) 
    1. Check operation of the power seat motor (slide motor).
      Fig 9: Identifying Power Seat Motor Connector
      GTY262269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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 (+) → 3
        Battery negative (-) → 4        		 Forward
        Battery positive (+) → 4
        Battery negative (-) → 3        		 Backward

    NG → See step   24 

    OK: Go to next step 

  15. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT MOTOR) 
    1. Disconnect the e20 switch connector.
      Fig 10: Identifying e20 Switch e59 Motor Connector
      GTY264650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the e59 motor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      e20-12 (SLD+) - e59-3 (FWD) Always Below 1 Ω
      e20-11 (SLD-) - e59-4 (BACK) Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   25 

  16. REPLACE FRONT POWER SEAT SWITCH LH. Refer to  DISASSEMBLY 
  17. REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH. Refer to  DISASSEMBLY 
  18. REPLACE FRONT POWER SEAT SWITCH LH. Refer to  DISASSEMBLY 
  19. REPLACE FRONT SEAT ADJUSTER ASSEMBLY LH. Refer to  DISASSEMBLY 
  20. REPLACE FRONT POWER SEAT SWITCH LH. Refer to  DISASSEMBLY 
  21. REPLACE FRONT POWER SEAT SWITCH RH. Refer to  DISASSEMBLY 
  22. REPLACE FRONT SEAT ADJUSTER ASSEMBLY RH. Refer to  DISASSEMBLY 
  23. REPLACE FRONT POWER SEAT SWITCH RH. Refer to  DISASSEMBLY 
  24. REPLACE FRONT SEAT ADJUSTER ASSEMBLY RH. Refer to  DISASSEMBLY 
  25. REPLACE FRONT POWER SEAT SWITCH RH. Refer to  DISASSEMBLY 
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