1995 Toyota Corolla Air Bag?

My son drove his car to my house after replacing the alternator and battery. Enroute he hit a deer after slowing considerably-minimal damage. A week later I put it in the garage as he was in army boot camp. When he came home for Xmas leave, the car would not start. We checked grounds, start switch, relays/cb's, etc.

It did push start, but alternator indicated battery voltage-no charge. When ignition switch is on, only thing happens is a relay at the power distribution box under hood clicks and the airbag light illuminates on the dash. No power to whipers, stereo, or a/c blower. Nothing at all happens when start attempted.

Is it possible there was enough impact to activate the airbag circuitry disabling normal engine and electrical operation without deploying the airbag? Is it possible to reset? If not, is it possible to bypass the system? If not the airbag, what do you suggest?