Test P: LFC 44/DTC U2017 - Driver Side Impact Sensor Communication Fault

P1:

P2 - P3:

P3 - P5:

P5:

P6 - P7:

P7 - P8:

P9:

P10:

Normal Operation
The driver seat side impact sensor monitors the severity of a impact event. If the impact 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 seat 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 seat 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 seat side impact sensor communication fault can be caused by:
^ damaged wiring on circuit 7-JA39 (YE).
^ damaged wiring on circuit 9-JA39 (BN).
^ damaged driver seat side impact sensor.