picked the car up tonight from being tuned and the engine light is on. my tuner scanned it and said something about tps voltage too low or some nonsense, i really didn't think much of it since the tps has always worked fine whenever i have adjusted it, etc. i get home, get my voltmeter out and start testing and i have zeros across the board. with the key on i have 0 where it should be 5v on the 5v reference wire, 0 on the ground, (i checked these 2 wires with the sensor unplugged) and naturally nothing on the signal wire going back to the computer which should have under a volt with key on and close to 5v at wot. all this on a car that just made over 500 hp on the dyno. how could this be? i'm gonna get a diagram of the computer pins tomorrow from a friend so i can see if there is 5v coming out of the computer, hopefully there is. if not, what could be causing this bullsh-t.