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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag (Event #1) System Diagnosis (Except HEV) >> DTC B1493-00: OCS (Occupant Classification System) Communication Error >> Wiring Inspection >> CAN communication Line Inspection

CAN communication Line Inspection

  1. Ignition "OFF".
  2. Connect SRSCM and Passenger side BodySense sensor ECU connector.
  3. IG KEY ON.
  4. Measure signal waveform between CAN HIGH terminal and CAN LOW terminal of BodySense sensor ECU connector.

    Specification:  Refer to Signal waveform and Data

  5. Is the measured signal waveform normal?

    YES 

    • Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

      Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Check a circuit open and short of the CAN communication line, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      Substitute a known-good Passenger side BodySense sensor ECU and check for proper operation. If the problem is corrected, replace Passenger side BodySense sensor ECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure and Go to "BODY SENSOR RESET " procedure.

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