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

W1:

W2:

W2 - W3:

W4 - W5:

W5 - W6:

Normal Operation
The passenger side impact 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 impact sensor for a signal that is out of the expected range. If the RCM detects a signal from the passenger side impact sensor, indicating a sensor mounting fault, 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
A passenger side impact sensor mounting fault can be caused by:
^ damaged passenger side impact sensor.
^ corrosion or damage at the sensor mounting surface.