Normal Operation
WARNING: This page is about a different car, the 2013 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The Occupant Classification System Module (OCSM) monitors Occupant Classification System (OCS) weight sensor bolt "D" and circuitry for faults. If the OCSM detects a fault, it stores DTC B00C3:12, B00C3:13 or B00C3:1A in memory and sends a message to the Restraints Control Module (RCM).
The RCM stores DTC B00A0:09 in memory and sends a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator.
- DTC B00C3:12 (Passenger Seat Occupant Classification Sensor "D": Circuit Short To Battery) - A fault is indicated when the OCSM measures voltage on the OCS weight sensor bolt "D" signal circuit above 4.85 volts. An open sensor return circuit also sets this DTC.
- DTC B00C3:13 (Passenger Seat Occupant Classification Sensor "D": Circuit Open) - A fault is indicated when the OCSM measures resistance above a calibrated threshold on the OCS weight sensor bolt "D" signal circuit.
- DTC B00C3:1A (Passenger Seat Occupant Classification Sensor "D": Circuit Resistance Below Threshold) - A fault is indicated when the OCSM measures resistance below a calibrated threshold on the OCS weight sensor bolt "D" signal circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCS weight sensor bolt "D"
- OCSM