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Home >> Mazda >> 2018 >> MX-5 Miata Club, Standard Trans >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> On-Board Diagnostic - SAS Control Module - Two-Step Deployment Control System >> DTC B00A0-09; Occupant Classification Sensor Internal Signal Output Unstable >> Notes
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DTC B00A0-09; Occupant Classification Sensor Internal Signal Output Unstable: Notes

System malfunction location
  • Occupant classification sensor internal signal output unstable
Detection condition
WARNING:
  • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
  • Occupant classification sensor internal malfunction
  • Occupant classification sensor calibration setting has not been done correctly
Fail-safe -
Possible cause
  • Occupant classification sensor malfunction
  • SAS control module malfunction
  • Seat cushion is damp
  • Malfunction in the power supply circuit of the occupant classification sensor
  • Malfunction in the body ground circuit of the occupant classification sensor
  • Passenger's seat electric parts malfunction
  • Malfunction in the power supply circuit of the passenger's seat electric parts
  • Malfunction in the body ground circuit of the passenger's seat electric parts
Fig 1: Occupant Classification Sensor - Circuit Diagram
G11276693Courtesy of MAZDA MOTORS CORP.