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 each Occupant Classification Sensor (OCS) weight sensor bolt and circuitry for faults. If the OCSM detects unwanted voltage on any weight sensor VREF circuit it will store DTC U200D:12 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 U200D:12 (Control Module Output Power A: Circuit Short to Battery) - If the OCSM
detects voltage above 5 volts on any weight sensor VREF circuit, it will set this DTC.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCSM