Tests AI: LFC 44/DTC U2017 - Driver Side Impact Sensor Communication Fault

PINPOINT TEST AI: LFC 44/DTC U2017 - DRIVER SIDE IMPACT SENSOR COMMUNICATION FAULT

AI1-AI3:

AI4-AI5:

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AI8-AI10:

Normal Operation
The driver 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 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 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 side impact sensor.