Theory Of Operation
WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The Occupant Restraint Controller (ORC) receives power from both a battery and ignition feed input circuit from the Rear Power Distribution Center. These circuits power the ORC and the capacitors used to initiate the squib deployment circuits in the event of collision detection.