Occupant Classification Module
Works out who is sitting in the passenger seat — empty, a child or child restraint, a small occupant, or an adult — from a sensing mat, a fluid-filled bladder or strain gauges in the seat frame. The passenger airbag is then enabled, disabled or deployed at reduced force accordingly, which is what the passenger airbag off lamp reports.
Its faults are overwhelmingly physical rather than electrical, and mostly innocent. Anything loading the seat from above or below corrupts the reading: a bag or a jack wedged under the frame, a heavy aftermarket seat cover, a cushion, a floor mat trapped under the rails, or a child seat belted in tightly.
And the system must be re-zeroed after almost any work on that seat — a step skipped constantly when a seat comes out for carpet drying or wiring. Emptying the seat and the space beneath it, removing any cover and sitting in it normally is a free first test that resolves a good proportion of these.
Also known as: ocs, ocs module, occupant classification, seat weight sensor, passenger seat sensor, occupant sensor, seat occupancy sensor, weight sensing system
Referenced by 33 codes
Codes involving this component (33)
- B0060 Driver Seat Belt Tension Sensor High
- B0061 Passenger Seat Belt Tension Sensor High
- B00A0 Occupant Classification System High
- B00A1 Occupant Position System High
- B00B0 Driver Seat Occupant Classification Sensor A High
- B00B1 Driver Seat Occupant Classification Sensor B High
- B00B2 Driver Seat Occupant Classification Sensor C High
- B00B3 Driver Seat Occupant Classification Sensor D High
- B00B4 Driver Seat Occupant Classification Sensor E High
- B00B5 Driver Seat Track Position Restraints Sensor High
- B00B6 Driver Seat Recline Position Restraints Sensor High
- B00B7 Driver Seat Occupant Position Sensor A High
- B00B8 Driver Seat Occupant Position Sensor B High
- B00B9 Driver Seat Occupant Position Sensor C High
- B00BA Driver Seat Occupant Position Sensor D High
- B00BB Driver Seat Occupant Position Sensor E High
- B00C0 Passenger Seat Occupant Classification Sensor A High
- B00C1 Passenger Seat Occupant Classification Sensor B High
- B00C2 Passenger Seat Occupant Classification Sensor C High
- B00C3 Passenger Seat Occupant Classification Sensor D High
- B00C4 Passenger Seat Occupant Classification Sensor E High
- B00C5 Passenger Seat Track Position Restraints Sensor High
- B00C6 Passenger Seat Recline Position Restraints Sensor High
- B00C7 Passenger Seat Occupant Position Sensor A High
- B00C8 Passenger Seat Occupant Position Sensor B High
Other components in Body, Interior and Safety
- Body Control Module 299
- Restraints Control Module 177
- Air Conditioning Control Module 80
- Door Control Module 58
- Seat Belt Pretensioner 55
- Audio Amplifier 28
- Seat Control Module 28
- Fuel Filler Door 26
- Impact Sensor 26
- Steering Column Clockspring 24
- Steering Column Control Module 21
- Stop-Start Switch 20
- Door Switch 17
- Door Window Motor 10
- Air Conditioning Refrigerant Expansion Valve 7
- Instrument Cluster 6
- Moveable Roof Control Module 5
- Mirror Control Module 5
- Pedestrian Alert Module 3
- Front Radar Sensor 3
- Park Assist Module 3
- Remote Function Actuation Module 3
- Automated Driving System Control Module 2
- Seat Control Switch Module 2
- Speech Recognition Module 2
- Folding Top Control Module 1
- Heated Steering Wheel Module 1
- Haptic Control Module 1
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