Removal and Replacement
RESTRAINTS CONTROL MODULE (RCM)Removal
WARNING:
- Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow these instructions may result in the inadvertent deployment of the safety canopy and risk of personal injury.
- The restraints control module (RCM) orientation is critical for proper air bag supplemental restraint system (SRS) operation. If a vehicle equipped with an SRS system has been involved in a collision in which the center tunnel area has been damaged, inspect the mounting and bracket for deformation. If damaged, the RCM must be replaced whether or not the air bags have deployed. In addition, make sure the area of the RCM mounting is restored to its original condition.
- Vehicle sensor orientation is critical for proper system operation. If a vehicle equipped with an air bag supplemental restraint system (SRS) is involved in a collision, inspect the sensor mounting bracket and wiring pigtail for deformation. Replace and properly position the sensor or any other damaged supplemental restraint system (SRS) components whether or not the air bag is deployed.
- Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an air bag module. This will reduce the risk of injury in the event of an accidental deployment.
- To reduce the risk of personal injury, do not use any memory saver devices.
CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage can result.
NOTE:
- The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- When installing a new restraints control module (RCM), always make sure the correct RCM is being installed. If an incorrect RCM is installed, erroneous DTCs will result.
- Repair is made by installing a new part only. If the new part does not correct the condition, install the original part and perform the diagnostic procedure again.
All vehicles
1. Depower the system.
2. Remove the floor console.
Vehicles built up to 03/2002
3. Remove the RCM.
1. Slide and disengage the RCM electrical connector locking clips.
2. Push down, releasing the electrical connector and disconnect the RCM electrical connectors.
3. Remove the nuts.
4. Remove the RCM.
Vehicles built 03/2002 onward
4. Disconnect the large restraints control module (RCM) electrical connector.
1. Pinch the thumb tab and pivot the connector position assurance lever all the way back until it stops.
2. Pull out and disconnect the RCM electrical connector.
5. Disconnect the small RCM electrical connector.
1. Push down to release the retaining tab.
2. While releasing the retaining tab, pull out and disconnect the small RCM electrical connector.
6. Remove the RCM.
1. Remove the nuts.
2. Remove the RCM.
Installation
Vehicles built up to 03/2002
1. WARNING: The tightening torque of the air bag restraints control module (RCM) retaining nuts is critical for correct system operation.
NOTE: Make sure the battery negative cable is still disconnected before continuing with the installation portion of this procedure.
Position the RCM in place.
1. Position the RCM.
2. Install the nuts.
3. Connect the RCM electrical connectors.
4. Slide and engage the RCM electrical connector locking clips.
Vehicles built 03/2002 onward
2. WARNING: The tightening torque of the air bag restraints control module (RCM) retaining nuts is critical for correct system operation.
NOTE: Make sure the battery negative cable is still disconnected before continuing with the installation portion of this procedure.
Install the RCM.
1. Position the RCM.
2. Install the nuts.
3. Connect the small RCM electrical connector.
1. Align the small RCM electrical connector.
2. Push in until the connector is fully seated into the RCM.
4. Make sure the connector position assurance lever is in the full release position before attempting to connect the connector.
5. CAUTION: Putting the large RCM electrical connector into the RCM on an angle can cause bad electrical connections and damage components.
NOTE: The RCM has been removed for clarity.
Position the large RCM electrical connector into the RCM.
- CAUTION: Do not push the connector on to where the lever pivots and seats itself. Light pressure is needed to get the connector into position on the RCM before using the lever to fully seat the connector.
With the large RCM electrical connector uniformly aligned to the RCM, lightly push in until a subtle audible click is heard and a slight resistance is felt.
6. NOTE: The RCM has been removed for clarity.
Connect the large RCM electrical connector.
- Using the connector position assurance lever, pivot it toward the RCM, drawing the connector into the RCM.
- Make sure the thumb tab is engaged to the retainer on the RCM and locked in place.
All vehicles
7. Repower the system.