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

AC1:

AC2:

AC3 - AC4:

AC4 - AC5:

AC6:

Normal Operation

CAUTION: The crash sensors are sensitive electronic devices. To avoid possible component damage, do not attempt to test crash sensors with an ohmmeter.

The Restraints Control Module (RCM) monitors the communications link to the driver side crash sensor at RCM C310b pins 13 and 14, circuits 1261 (WH/LG) and 1262 (BN/LG). If the RCM loses communication with the driver side crash sensor, it will store Diagnostic Trouble Code (DTC) U2017 in memory and flash Lamp Fault Code (LFC) 44 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A driver side crash sensor communications fault can be caused by:
^ damaged wiring on circuit 1261 (WH/LG) or 1262 (BN/LG).
^ a driver side crash sensor internal fault.
^ an RCM internal fault.