When Monitored
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) continuously monitors the Driver and Passenger Head Restraint Solenoid circuits for head restraint messages. The Driver and Passenger Head Restraint communication and on board diagnostics are powered by the ORC signal.