Normal Operation
WARNING: This page is about a different car, the 2014 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 each Occupant Classification System (OCS) weight sensor bolt and its circuitry for faults. If the OCSM detects unwanted voltage on any weight sensor VREF circuit, it stores DTC U200D:12 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 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 sets this DTC.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCSM