Air Bag Control Module: Service and Repair

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.
- 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 carry out the diagnostic procedure again.

1. Depower the SRS.
2. Remove the center console.







3. Disconnect the large restraint control module (RCM) electrical connector.
1 Pinch the thumb tab and pivot the connector position assurance lever away from the RCM, disengaging the lever.
2 Pull out and disconnect the large RCM electrical connector.







4. Disconnect the small RCM electrical connector.
1 Push down, releasing the retaining tab and disconnect the electrical connector.
2 Remove the bolt.







5. Remove the RCM.
1 Remove the bolts.
2 Remove the RCM.

Installation







1. WARNING: The tightening torque of the air bag restraint control module (RCM) retaining bolts is critical for correct system operation.

Install the RCM.
1 Position the RCM to the bracket.
2 Install the bolts.







2. WARNING: The tightening torque of the air bag restraint control module (RCM) retaining bolts is critical for correct system operation.

Install and connect the RCM.
1 Install the bolt.
2 Connect the small RCM electrical connector.







3. Make sure the connector position assurance lever is in the full release position before attempting to connect the connector.







4. CAUTION: Putting the large RCM electrical connector into the RCM on an angle can cause bad electrical connections and damage components.

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 slight resistance is felt.







5. Connect the 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.

6. Install the center console.
7. Repower the SRS.