In an effort to avoid an accident tonight, I slammed on my brakes to miss some dumb-ass kid in a Taho whom ran a red light. My car skidded to a smoking halt. After I stopped and regained my composure I began to accelerate and noticed a thud..thud..thud..thud..ect. I put two flat spots on my crappy Kuhmo Supras. My ABS light has been coming on lately and obviously it no longer works. My question is how does one go about diagnosing the problem? My car is a 94 auto TT. I need to fix this before getting some new Yokahama AVS 100s. Is there some kind of scan-tool, or can you just retreive the codes just like the engine codes?