Theory of Operation

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The sensor 4 impact sensors are located in the first row driver and passenger doors. Impact pressure sensors perform their own self test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC. The repair of this fault centers on verifying the integrity of the sensor's internal circuitry and software validity. A short to voltage fault on the left side impact sensor 2 sensor wiring can cause a loss of comm impact sensor 4 code to set and the possible replacement of a good left side impact sensor 4. The left side impact 1, 2, and 4 sensors are wired in a daisy chain pattern. The short to battery fault in a loss of comm or internal circuit failure of the side impact sensor 1 can cause the impact sensors 2 and 4 on the same side to set a loss of comm code.