Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The Occupant Classification System Module (OCSM) monitors Occupant Classification Sensor (OCS) weight sensor bolt "C" and circuitry for faults. If the OCSM detects a fault, it will store DTC B00C2:12, B00C2:13 or B00C2:1A in memory and send a message to the Restraints Control Module (RCM).
The RCM will store DTC B00A0:09 in memory and send a message to the Instrument Cluster (IC) module to illuminate the air bag warning indicator.
- DTC B00C2:12 (Passenger Seat Occupant Classification Sensor "C": Circuit Short To Battery) - When the OCSM measures voltage on the OCS weight sensor bolt "C" signal circuit above 4.85 volts, a fault will be indicated.
- DTC B00C2:13 (Passenger Seat Occupant Classification Sensor "C": Circuit Open) - When the OCSM measures resistance greater than 498,200 ohms on the OCS weight sensor bolt "C" signal circuit, a fault will be indicated.
- DTC B00C2:1A (Passenger Seat Occupant Classification Sensor "C": Circuit Resistance Below Threshold) - When the OCSM measures resistance less than 441,800 ohms on the OCS weight sensor bolt "C" signal circuit, a fault will be indicated.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCS weight sensor jumper harness
- OCS weight sensor bolt "C"
- OCSM