Air Bag Warning Indicator

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The air bag warning indicator:

is located in the instrument cluster (IC) module.
and circuitry prove out is a function of the restraints control module (RCM). The RCM will prove out the air bag warning indicator by lighting the air bag warning indicator for 6 seconds and then turn off.
will flash and/or illuminate based on the supplemental restraint system (SRS) fault.
will illuminate if the RCM is disconnected.