Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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 message reported by the Occupant Classification Sensor (OCS) system. The RCM also checks for the correct identification of the OCSM . If the RCM detects one of the following faults reported by the OCS 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 Cluster (IC) module to illuminate the air bag warning indicator.
This pinpoint test is intended to diagnose the following:
- OCSM
- RCM DTC DESCRIPTION CHART
DTC Description Fault Trigger Conditions - B00A0:09 - Occupant Classification System: Component Failures
When the RCM receives a message from the OCSM that fault exists within the OCS system, a fault will be indicated. - B00A0:4A - Occupant Classification System: Incorrect Component Installed
When the RCM senses the OCS system 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 containing incorrect data, a fault will be indicated.