OEM 2005 Lincoln Town Car Air Bag Control Module

2005 Lincoln Town Car Air Bag Control Module Parts Questions & Experts Answers

• Q: What precautions should be taken when servicing the air bag control module and ensuring the proper operation of the supplemental restraint system on 2005 Lincoln Town Car?

  A: Safety glasses serve as a necessary protective gear for servicing air bag control modules due to potential deployment-related injuries. Proper operation of the supplemental restraint system (SRS) depends on how the restraints control module (RCM) is positioned. To determine if replacement of the RCM is necessary inspect the RCM mounting and bracket for damage after any collision affecting the center tunnel area; the RCM must be replaced even when air bags did not deploy. Using memory saver devices should be avoided to prevent personal injury incidents. The effect of static electricity poses a danger to electronic modules due to their sensitivity. The RCM fuse removal will cause the air bag warning lamp to illuminate while the ignition switch is turned ON because this indicates standard system functioning. A complete check must verify that the SRS operates without faults prior to vehicle transfer to the customer. To fix the issue you should install fresh components but recurring problems need you to reinstall the initial components while conducting additional checks. Start the procedure by depowering the system then taking out the carpet patch and ashtray using tab release followed by cigarette lighter harness detachment. First position the ashtray bracket to an accessible area before removing the insulator from the RCM and finally removing its bolts. The large RCM electrical connector detaches after fingerting the thumb tab to pivot the connector position assurance lever backward while gently pulling out the connector. Unplug the small electrical connector by pressing down on its retaining tab to detach it after which you should remove the RCM bolt before pulling out the RCM component. Mount the RCM into the center tunnel area beneath the instrument panel while bolting it into position correctly based on system operating requirements. Attach the small RCM electrical connector when the connector position assurance lever is completely backward. The large RCM electrical connector should be positioned carefully to protect components and installed with light force until it produces an audible clicking sound. Before performing the next step please make sure to lock the connector position assurance lever. attach the insulator above the RCM before placing the ashtray bracket and ashtray while reconnecting the wire harness and cigarette lighter. As a closing step, install the carpet patch before turning on the SRS system without proving its operation. The installation of new RCM requires module configuration because diagnostic trouble code (DTC) B2477 will store in memory tracking a continuous fault while activating lamp fault code (LFC) 54 on the air bag indicator. The air bag indicator should stay on for six seconds during an SRS proofing procedure where you switch the ignition key to OFF then back to ON after waiting ten seconds. The indicator light may not illuminate or it might stay on with possible audio signals when a fault exists. A diagnostic tool should be used to clear all continuous DTCs which exist in the RCM.