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Occupant Restraint Controller






Occupant Restraint Controller


To avoid serious or fatal injury on vehicles equipped with side curtain airbags, disable the supplemental restraint system before attempting any occupant restraint controller diagnosis or service. The ORC contains a rollover sensor, which enables the system to deploy the side SRS components in the event of a vehicle rollover event. If an ORC is accidentally rolled during service while still connected to battery power, the side SRS components will deploy. Disconnect the negative battery cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.


To avoid serious or fatal injury on vehicles equipped with airbags, disable the SRS before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect the negative battery cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.


To avoid serious or fatal injury, never strike or drop the ORC, as it can damage the impact sensor or affect its calibration. The ORC contains the impact sensor, which enables the system to deploy the SRS components. If an ORC is accidentally dropped during service, the module must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper SRS component deployment.

• Service ORC modules are shipped in a "Locked Out" state and when replaced, will set a B-2722 ORC Unlocked-All Deployment Disabled fault code. Utilize the diagnostic scan tool and access the ORC module and go into the MISCELLANEOUS menu and perform the MODULE INITIALIZATION procedure. This will erase the fault codes and initialize the module.

Removing






- Disconnect the negative battery cable.

- Wait two minutes for the system capacitor to discharge before further service.

- If necessary, remove the electronic stability program dynamics sensor from the right side of the ORC mounting bracket (3).

- Disconnect the instrument panel wire harness connector (4) and body wire harness connector (5) from the ORC (1) connectors located on the rearward facing side of the module. To disconnect the wire harness connectors from the ORC, depress the release tab and lift the lever arm to the fully open position on each connector. Disconnecting the 36 pin connector first will allow for an easier access when disconnecting the 72 pin connector.

- Remove the bolts (2) securing the ORC to the bracket.

- Working from the right side of the floor panel transmission tunnel, lift the ORC far enough to disengage the locating pins and remove the ORC from the bracket.

Installing






- Working from the right side of the floor panel transmission tunnel, carefully position the ORC (1) to the bracket (3) welded onto the top of the floor panel transmission tunnel. When the ORC is correctly positioned, the arrow on the ORC label will be pointed forward in the vehicle and the locating pins on the bottom of the ORC will be engaged into the locating holes in the bracket.

- Install and tighten the three bolts (2) that secure the ORC to the bracket. Tighten the bolts to 10 Nm (88 in lbs).


The lever arms of the wire harness connectors for the ORC must be in the unlatched position before they are inserted into their connector receptacles on the ORC or they may become damaged.

• Service ORC modules are shipped in a "Locked Out" state and when replaced, will set a B2722 - ORC Unlocked-All Deployment Disabled fault code. Utilize the diagnostic scan tool and access the ORC module and go into the MISCELLANEOUS menu and perform the MODULE INITIALIZATION procedure and then erase the fault codes.

- Connect the body wire harness connector (5) and the instrument panel wire harness connector (4) to the ORC connector located on the rearward facing side of the module. Be certain that the latches on both connectors are each fully engaged.

- Install the ESP dynamics sensor, if necessary.

- Perform the SRS verification test procedure.

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