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Home >> Dodge and Ram >> 2012 >> Journey SE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Occupant Restraint Controller (Orc) - B1BC7 To U142A >> Diagnosis And Testing >> U142A-Implausible PRNDL Signal Received >> Theory Of Operation

Theory Of Operation

There are two qualifying states that the Occupant Restraint Control Module ORC uses to modify a Active Headrest (AHR) deployment. One is the PRNDL state signal over the CAN C Bus network. The other is the actual transmission gear state. The ORC utilizes multiple vehicle data bus network communication to support modification of the AHR when it is established the gear state is reverse. The PRNDL data (status and reverse gear state) shall be stored in the Event Data Recorder (EDR).