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 circuitry for faults. If the OCSM detects a fault, it stores DTC B1A59:01 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 B1A59:01 (Sensor 5 Volt Supply: General Electrical Failure) - A fault is indicated when the OCSM senses a short between the Belt Tension Sensor (BTS) VREF circuit and one of the OCS weight sensor bolt VREF circuits. DTC U200E:1A may also set when this DTC is present. The OCSM only checks for this fault when the module is first powered on, and does not monitor for this fault after the initial power-on self test.
- DTC B1A59:11 (Sensor 5 Volt Supply: Circuit Short To Ground) - A fault is indicated when the OCSM senses a short to ground on either of the OCS weight sensor bolt VREF circuits, or if the BTS VREF circuit is shorted to ground while an open circuit exists on the BTS VREF circuit (BTS disconnected).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Passenger seat track assembly
- OCSM