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Home >> Lexus >> 2024 >> GX 550 Premium+ >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Occupant Classification System - Diagnostic Codes & Circuit Tests >> Occupant Classification System >> DTC B00C2-28: Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure [12/2023 - ] >> Procedure
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DTC B00C2-28: Passenger Seat Occupant Classification Sensor "C" Signal Bias Level Out of Range / Zero Adjustment Failure [12/2023 - ]: Procedure

  1. PERFORM ZERO POINT CALIBRATION 
    1. Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".

      HINT: 

      Refer to INITIALIZATION [12/2023 - ]

      Body Electrical > SRS Airbag > Utility 

      Tester Display
      Occupant Detection Sensor Zero Point Calibration

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CLEAR DTC 
    1. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK DTC 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    3. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result  Proceed to
      B00C2-28 is output A
      B00C2-28 is not output B

      Post-procedure1

    4. None

    Result: 

    END (NORMAL AFTER PERFORMING ZERO POINT CALIBRATION) 

    Result: 

    See step  4

  4. REPLACE FRONT SEAT ADJUSTER ASSEMBLY RH 
    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 60 seconds.
    3. Replace the front seat adjuster assembly RH with a new one.

      HINT: 

      Refer to DISASSEMBLY [12/2023 - ]

    4. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. PERFORM ZERO POINT CALIBRATION 
    1. Using the GTS, perform "Occupant Detection Sensor Zero Point Calibration".

      HINT: 

      Refer to INITIALIZATION [12/2023 - ]

      Body Electrical > SRS Airbag > Utility 

      Tester Display
      Occupant Detection Sensor Zero Point Calibration

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)