No it won't. It is just a code scanner. I guess I was confused by your statement about OBDII scanner. That is not what you need for the specific testing you are talking about. You would need the dealer scanner. However I have never heard of a good key not communicating with the engine computer, though I suppose it might be technically possible. I am not sure the more likely causes have been ruled out yet, like fuel pump, fuel pump relay, etc. The suggestion was to use the OBDII scanner to see if the computer is alive I think. I guess it would confirm that.

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra