Normal Operation and Fault Conditions
The RCM continuously monitors the left front impact sensor circuits for the following faults:
- Open circuit
- Short to voltage
- Short to ground
- Faulted front impact sensor
If a fault is detected, the RCM stores DTC B1413:11, B1413:12, B1413:13 or B1413:96 in memory and sends a message to the IPC to illuminate the airbag warning indicator.
PPT W RCM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1413:11 | Driver Frontal Restraints Sensor: Circuit Short to Ground | Sets when the RCM senses a short to ground from the front impact sensor feed circuit, or a short to voltage from the sensor feed circuit that is less than the normal sensor operating voltage. |
| B1413:12 | Driver Frontal Restraints Sensor: Circuit Short to Battery | Sets when the RCM senses a short to voltage from the sensor feed circuit that is greater than the normal sensor operating voltage. |
| B1413:13 | Driver Frontal Restraints Sensor: Circuit Open | Sets when the RCM senses an open from the front impact sensor feed circuit, or a short to voltage from the sensor feed circuit that is within a pre-determined range from the normal sensor operating voltage. |
| B1413:96 | Driver Frontal Restraints Sensor: Component Internal Failure | Sets when the RCM senses a short to ground from the front impact sensor feed circuit, or a short to voltage from the sensor feed circuit that is less than the normal sensor operating voltage. |