Normal Operation

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The Restraints Control Module (RCM) is in constant communication with various control modules on the High Speed Controller Area Network (HS-CAN), one of them is the Occupant Classification System Module (OCSM). The RCM continuously monitors the HS-CAN for fault messages reported by the OCSM system. The RCM also checks for the correct identification of the OCSM. If the RCM receives fault message(s) from the OCSM system, it will store DTC B00A0:09, B00A0:4A, B00A0:63, B00A0:64 or B00A0:68 in memory and send a message to the Instrument Panel Cluster (IPC) to illuminate the air bag warning indicator.

This pinpoint test is intended to diagnose the following:

OCSM
RCM

DTC FAULT TRIGGER CONDITIONS

DTC Description	Fault Trigger Condition
B00A0:09 - Occupant Classification System: Component Failures	When the RCM receives a message from the OCSM that a fault exists within the OCS system, a fault will be indicated.
B00A0:4A - Occupant Classification System: Incorrect Component Installed	When the RCM senses the OCSM is present but not configured, a fault will be indicated.
B00A0:63 - Occupant Classification System: Circuit / Component Protection Time-Out	When the RCM receives 8 or more invalid states from the OCSM, a fault will be indicated.
B00A0:64 - Occupant Classification System: Signal Plausibility Failure	When the RCM receives messages containing upper or lower data limits other than limits stored in memory, a fault will be indicated.
B00A0:68 - Occupant Classification System: Event Information	When the RCM receives a message from the OCSM containing incorrect data, a fault will be indicated.