Normal Operation and Fault Conditions

The RCM monitors the passenger front door and second row LH side impact sensors and circuits for the following faults:

Open circuit
Short to voltage
Short to ground
Faulted passenger front door side impact sensor
Faulted second row LH side impact sensor

NOTE: A short to ground on either impact sensor feed circuit sets DTC B0097:11. A short to voltage on either impact sensor feed circuit sets DTC B0097:93.

If a fault is detected, the RCM stores DTC B0091:81, B0097:11, B0097:81 or B0097:93 in memory and sends a message to the IPC to illuminate the airbag warning indicator.

The RCM communicates with each impact sensor. If the RCM is unable to communicate with the sensor, a DTC is stored in memory. A Continuous Memory Diagnostic Trouble Code (CMDTC) no operation (failure type: 93) can be set by a short to voltage on the return circuit of the impact sensor.

When the feed circuit of either impact sensor is shorted to voltage, an invalid data received fault (failure type: 81) may also be present for both sensors.

NOTE: Restraints Sensor 1 Diagnostic Trouble Codes (DTCs) set for the second row (C-pillar) side impact sensor circuits. Restraints Sensor 2 Diagnostic Trouble Codes (DTCs) set for the front door side impact sensor circuits.

DTC FAULT TRIGGER CONDITIONS

DTC	Description	Fault Trigger Conditions
B0091:81	Left Side Restraints Sensor 1: Invalid Serial Data Received	A fault is indicated when the RCM senses a faulted second row LH side impact sensor or an open second row LH side impact sensor circuit.
B0097:11	Right Side Restraints Sensor 2: Circuit Short to Ground	A fault is indicated when the RCM senses a shorted passenger front door side impact sensor, a shorted second row LH side impact sensor, a short to ground on the passenger front door side impact sensor feed circuit or a short to ground on the second row LH side impact sensor feed circuit.
B0097:81	Right Side Restraints Sensor 2: Invalid Serial Data Received	A fault is indicated when the RCM senses a faulted passenger front door side impact sensor or an open passenger front door side impact sensor circuit.
B0097:93	Right Side Restraints Sensor 2: No Operation	A fault is indicated when the RCM senses a faulted second row LH side impact sensor or passenger front door side impact sensor, or a short to voltage on the feed or return circuit of the second row LH side impact sensor or passenger front door side impact sensor.