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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (On-Board Diagnostic - 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

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
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: SAS Control Module Circuit Diagram
G10910463Courtesy of MAZDA MOTORS CORP.