When Monitored:
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 ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 500 ms thereafter while the ignition is on. With the ignition on, the Occupant Restraint Controller (ORC) monitors the resistance of the Right Side Curtain Squib 1 circuits.