Operation CHARM: Car repair manuals for everyone.

Test A: Air Bag Warning Illuminated Continuously - RCM Disconnected, Inop or Lost/Low Ign Feed

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Normal Operation

Note: During normal operation the air bag indicator will be lit continuously for 6 seconds after the ignition switch is placed in the RUN position and after five cycles of a Lamp Fault Code (LFC) if a fault exists. Be sure to cycle the ignition switch and look for a 6 second indicator prove-out without LFCs.

The Restraints Control Module (RCM) will communicate Diagnostic Trouble Codes (DTCs) to the scan tool through the Data Link Connector (DLC). If the scan tool displays NO COMMUNICATION when retrieving continuous DTCs, use this pinpoint test to troubleshoot the system.

Possible Causes
An air bag indicator that is illuminated continuously can be caused by one of the following:
^ the ignition circuit damaged.
^ the RCM disconnected from the vehicle harness.
^ a loss of RCM ground circuits.
^ the RCM inoperative.
^ the scan tool damaged.