Test O: LFC 43/DTC B2440 -Passenger Side Crash Sensor Mounting Fault

O1 - O2:

O3 - O6:

Normal Operation

WARNING:
^ VEHICLE SENSOR ORIENTATION IS CRITICAL FOR PROPER SYSTEM OPERATION. IF A VEHICLE EQUIPPED WITH AN AIR BAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) IS INVOLVED IN A COLLISION, INSPECT THE SENSOR MOUNTING BRACKET AND WIRING PIGTAIL FOR DEFORMATION. REPLACE AND PROPERLY POSITION THE SENSOR OR ANY OTHER DAMAGED SUPPLEMENTAL RESTRAINT SYSTEM (SRS) COMPONENTS WHETHER OR NOT THE AIR BAG IS DEPLOYED.
^ THE TIGHTENING TORQUE OF THE AIR BAG SIDE CRASH SENSOR RETAINING BOLTS IS CRITICAL FOR PROPER SYSTEM OPERATION.

The passenger side crash 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 passenger side air bag.

The RCM monitors the two-wire current loop to the passenger side crash sensor for a signal that is out of the expected range. If the RCM detects an out-of-range signal from the passenger side crash sensor, indicating a sensor mounting failure, it will store Diagnostic Trouble Code (DTC) B2440 and flash a Lamp Fault Code (LFC) 43 (or a higher priority code if one exists) on the air bag indicator.

Possible Causes
^ damaged wiring on circuit 7-JA40 (YE/VT).
^ damaged wiring on circuit 9-JA40 (BN/WH).
^ damaged passenger side crash sensor.
^ corrosion or damage at the sensor mounting surface.