RAM 2500 Truck 2WD L6-6.7L DSL Turbo (2010)
Air Bag Control Module: Description and Operation
Occupant Restraint Controller - Description
DESCRIPTION
The Occupant Restraint Controller (ORC) (1) is located in the passenger compartment of the vehicle, where it is secured by three nuts to three studs on a
stamped steel mounting bracket welded onto the top of the floor panel transmission tunnel under the center front seat section or the center floor console,
as the vehicle is equipped. Concealed within a hollow in the center of the die cast aluminum ORC housing is the electronic circuitry of the ORC which
includes a microprocessor, an electronic impact sensor, an electronic safing sensor, and an energy storage capacitor. A stamped metal cover plate is
secured to the bottom of the ORC housing with screws to enclose and protect the internal electronic circuitry and components.
An arrow (2) printed on the label (3) on the top of the ORC housing provides a visual verification of the proper orientation of the unit, and should always
be pointed toward the front of the vehicle. The ORC housing has three integral flanges with mounting holes. Two are on the corners oriented towards the
left side of the vehicle, and one is near the center of the side facing the right side of the vehicle. A molded plastic electrical connector (4) with two
receptacles, each containing up to 32 terminal pins, exits the forward facing side of the ORC housing. These terminal pins connect the ORC to the
vehicle electrical system through two dedicated take outs and connectors, one each from the instrument panel and the body wire harnesses.
A molded plastic protective cover is installed over the ORC to provide additional moisture contamination protection to the unit. Integral latch features on
each side of the cover engage a slot (5) on each side of the base of the ORC housing to secure the cover to the ORC. This protective cover must be
reinstalled following any service requiring its removal.
The impact sensor and safing sensor internal to the ORC are calibrated for the specific vehicle, and are only serviced as a unit with the ORC. The ORC
cannot be repaired or adjusted and, if damaged or ineffective, it must be replaced.
