The airbag light generally should light up for a few seconds on startup,
then go away.  If it stays on, then there's a problem.

Common issues are bad connections to the crash sensors.  If there's a
short or corroded connection to these sensors and you can find and fix
it, then you may ahve solved your problems.  You might want to get a
service manual for 02 Grand caravan and look up the location of the
crash sensors.

If the connections all look good, then the other likely problem is with
the bag deployment system itself reporting that something is wrong.
Unless you know exactly what you're doing, you generally don't want to
mess with the pyrotechnics and components involved here; best take it to
a dealer or mechanic that knows a thing or two about airbag systems.

I have a 99 and it was subject to recall. Turns out the clockspring assy. is
bad and needs to be fixed.
But on the notice from Chrysler they said it was just 98 to 2000 model
years??

I would ask the dealer about it. If you want I'll scan the letter from
Daimler-Chrysler and I could email it to you so you can see for yourself. It
goes into more detail about the problem.
Let me know whats up

Hope this helps