Test O: LFC 41/DTC B1941 - External Crash Sensor Open CKT or Short to Batt

O1:

O2:

O3 - O5:

Normal Operation
The external crash sensor monitors the severity of the crash event. If the crash event is severe enough, the sensor will close and signal the Restraints Control Module (RCM) to deploy the air bags. The external crash sensor contains a 787 ohm resistor.

The RCM measures this resistance to verify that the crash sensor is correctly mounted and connected. If there is a short to battery or an open on circuit 619 (PK/WH), the RCM will store a Diagnostic Trouble Code (DTC) B1941 in memory and flash a Lamp Fault Code (LFC) 41 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
An external crash sensor open circuit or short to battery fault could be caused by:
^ damaged wiring on circuit 619 (PK/WH).
^ damaged external crash sensor.
^ a short to battery on circuit 619 (PK/WH).