Tests AB: LFC 44/DTC U2017 - Driver Side Sensor Communications Fault

AB1:

AB2:

AB3 - AB5:

AB5:

AB6 - AB7:

AB7 - AB8:

AB9:

AB10:

Normal Operation
The driver side impact sensor monitors the severity of a 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 impact sensor for a signal that is out of the expected range. If the RCM detects an out-of-range signal from the driver side impact 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 impact sensor communication fault condition can be caused by:
^ damaged wiring on circuit 1261 (WH/LG).
^ damaged wiring on circuit 1262 (BN/LG).
^ damaged driver side impact sensor.