Normal Operation
The Occupant Classification System Module (OCSM) monitors internal circuitry, hardware and the 4 Occupant Classification Sensor (OCS) weight sensor bolts and circuitry for faults. If a fault is detected the OCSM , will store DTC B1342 in memory and send a message to the Restraints Control Module (RCM). The RCM will store DTC B2290 in memory and send a message to the Instrument Cluster (IC) module to illuminate the air bag warning indicator.
FAULT DESCRIPTION
| Fault PIDs (1) | Description | Fault Trigger Condition | ||
|---|---|---|---|---|
| 1342_27_OD and 1342_27_CM | Memory Fault | When the Occupant Classification System Module (OCSM) senses a internal hardware failure, a fault will be indicated. | ||
| 1342_28_OD and 1342_28_CM | Microcontroller Internal Fault | When the OCSM senses a internal failure, a fault will be indicated. | ||
| 1342_29_OD and 1342_29_CM | Satellite ASIC Fault [Application-Specific Integrated Circuit (ASIC)] | When the OCSM senses a internal hardware failure, a fault will be indicated. | ||
| 1342_30_OD and 1342_30_CM | Power Supply Internal Fault | When the OCSM
senses a failure with the internal power supply, a fault will be indicated. A short to ground on any of the OCS weight sensor bolt PWR (VREF) circuits, can set this DTC. |
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This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCS system component