Test Q: LFC 45/DTC U2018 - Passenger Side Impact Sensor Communication Fault

Q1:

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Q3 - Q5:

Q5:

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Q9:

Q10:

Normal Operation
The passenger 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 passenger seat side air bag.

The RCM monitors the two-wire current loop to the passenger 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 passenger seat side impact sensor, indicating a sensor communication fault, it will store Diagnostic Trouble Code (DTC) U2018 and flash a Lamp Fault Code (LFC) 45 (or a higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger seat side impact sensor communication fault can be caused by:
^ damaged wiring on circuit 7-JA40 (YE/VT).
^ damaged wiring on circuit 9-JA40 (BN/WH).
^ damaged passenger seat side impact sensor.