1999 Chevrolet Prizm Owner's Manual - Page 118

yellowblue This light will come on for a few seconds when you start your engine. Then the light should go out. This means the system is ready. Charging System Light This light will come on briefly when you turn on the ignition, but the engine is not running, as a check to show you it is working. Then it should go out when the engine starts. If it stays on, or comes on while you are driving, you may have a problem with the electrical charging system. It could indicate that you have a loose generator drive belt or another electrical problem. Have it checked right away. Driving while this light is on could drain your battery. If you must drive a short distance with the charging system light on, be certain to turn off all your accessories, such as the radio and air conditioner. If the air bag readiness light stays on after you start the engine or comes on when you are driving, your air bag system may not work properly. If the light comes on and flashes, your side impact air bag system or safety belt pretensioner system may not work properly. Have your vehicle serviced right away. The air bag readiness light should come on for a few seconds when you turn the ignition key to ON. If the light doesn't come on then, have it fixed so it will be ready to warn you if there is a problem. 2-48