See Figure 1
The air bag diagnostic monitor continually monitors all air bag system components and wiring connections for possible faults in the system. The monitor will display a diagnostic trouble code on the air bag warning indicator if it detects a fault in the air bag system while the ignition switch is in the RUN position.
The monitor performs system diagnostics which is its main function. The air bag diagnostic monitor does not deploy the air bags in the event of a crash! Crash sensors are hard wired to the air bags, and therefore, the sensors determine when to deploy the bags.
The air bag diagnostic monitor illuminates the air bag warning light for approximately six seconds when the ignition switch is turned to RUN and then turns off. This indicates that the air bag warning indicator is operational. If the air bag warning light does not illuminate or if it stays on or flashes at any time, a fault has been detected by the air bag diagnostic monitor.