You MUST read all the threads in the FAQs section to learn about your car. It sounds like you want to work on it yourself, so educate yourself.
When you just ask for info, the answers you get may be WRONG. Then you may follow that advice, and PAY $$ for doing what a NON educated writer has offered.
READ the FAQ section, and all the sticky threads in each section before touching a tool.
http://www.toyota-supra.info/forums/...iagnostic.html