Test T: LFC 44/DTC U2017 - Driver Crash Sensor Communication Fault

T1:

T2:

T3 - T4:

T5:

T6:

T7:

T8:

T9 - T10:

Normal Operation
The driver side crash sensor monitors the severity of a side impact crash event. If the crash event is severe enough, the sensor will signal the Restraints Control Module (RCM) to deploy the driver side air bag.

The RCM monitors the two-wire current loop to the driver side crash sensor for a signal that is out of the expected range. If the RCM detects an out-of-range signal from the driver side crash sensor, indicating a sensor communication fault, it will store Diagnostic Trouble Code (DTC) U2017 and flash a Lamp Fault Code (LFC) 44 (or a higher priority code if one exists) on the air bag indicator.

Possible Causes
A driver side crash sensor communication fault condition could be caused by:
^ damaged wiring on circuit 1261 (WH/LG).
^ damaged wiring on circuit 1262 (BN/LG).
^ damaged driver side crash sensor.