Chevrolet 2002 Prizm Owner's Manual page 125

CAUTION:
If the air bag readiness light stays on or keeps
flashing after you start your vehicle, it means
the air bag system and safety belt pretensioner
system may not be working properly. The air
bags in your vehicle may not inflate in a crash,
or they could even inflate without a crash.
To help avoid injury to yourself or others, have
your vehicle serviced right away if the air bag
readiness light stays on or keeps flashing after
you start your vehicle.
The air bag readiness light should come on for about
10 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.
Charging System Indicator Light
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.
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.
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