Optima & Sedona
WARNING: This page does not describe the selected car, but rather 120 other vehicles, including the 2002 Volkswagen Passat, 2002 Volkswagen New Beetle, 2002 Volkswagen Jetta, 2002 Volkswagen Golf, and 2002 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition on, with engine off. Air bag warning light in instrument cluster should flash about 6 times, then turn off. If air bag warning light does not illuminate when the ignition is turned on, or remains lit with the ignition on, there is a fault in the air bag system.