Test M: The Air Bag Warning Indicator Is Illuminated Continuously - RCM Disconnected or Inoperative, Loss of Battery Feed, or L
PINPOINT TEST M: THE AIR BAG WARNING INDICATOR IS ILLUMINATED CONTINUOUSLY - RCM DISCONNECTED OR INOPERATIVE, LOSS OF BATTERY FEED, OR LOSS OF SIGNAL GROUND - VEHICLES BUILT 03/2002 ONWARDM1:
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Normal Operation
NOTE: During normal operation, the air bag indicator will illuminate continuously for 6 seconds after the ignition switch is placed to the RUN or ON 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, Go To Pinpoint Test AG to troubleshoot the system. Tests AG: No Communication With the Restraints Control Module (RCM) - Vehicles Built 03/2002 Onward
Possible Causes
An air bag indicator that is illuminated continuously can be caused by one of the following:
- damaged ignition circuit.
- RCM disconnected from the vehicle harness.
- a loss of RCM signal ground.
- a faulted RCM.
- damaged wiring, terminals, or connectors.
- loss of RCM battery feed.
- instrument cluster.