How do I check the codes on my daughters '97 J30?

What is your question?

She parked it the other day and now it won't start. The battery has been giving her trouble because the interior lights are repeatedly left on :-<. When the key is inserted and turned to on, the fuel pump comes on and after a few seconds shuts off. The car turns over strong. I tried spraying starting fluid at the air filter, and it does not fire. She said she saw an AT light on the cluster and that she thinks it is Anti Theft. Any thoughts?