Saab Problems? Ask a Mechanic for Answers ASAP
If you don't have access to the scan tool the most you can do is check the fuses. It's very possible that one of them is just blown.
A Tech 2 is a type of ODBII scan tool. It is Saab and GM specific. They aren't terribly expensive, but not cheap either. Your best bet is to find a shop with one unless you want to invest about $1500.