Diagnostic Monitor
WARNING: This page is about a different car, the 1996 Ford Ranger and 1996 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The diagnostic monitor is located at center of instrument panel. The diagnostic monitor contains a microcomputer, which monitors electrical system components and connections. Diagnostic monitor performs a system self-check of SRS internal circuits every time ignition switch is turned to RUN position. Monitor also energizes SRS readiness indicator light (AIR BAG warning light) during initial system self-check and whenever a fault is detected. Faults are translated into flash codes and are displayed through AIR BAG warning light.
If a system fault exists and/or AIR BAG warning light is malfunctioning, an audible tone will sound, indicating need for service. See TONE GENERATOR . Diagnostic monitor can also disarm SRS if certain faults occur.