Are you getting any spark at all? Pull a plug wire and stuff a spare plug in it and ground the steel side of the plug. Have someone cycle the key off then back on to start and see if you get any spark at the plug. Best I can tell from looking at the wiring diagram, you only get about one second of fuel pump if no RPM signal (TDC sensor). Signal from the sensor should be at pins 7&8 of your diagnostic connector. Another test: pull the top off the air cleaner and spray a little starting fluid down on the air flow sensor plate. Crank engine and see if it will start to fire. If it tries to fire, you have a fuel problem. No fire equals ignition problem. Might want to look and see if you have a bad ground somewhere. That can cause all kinds of strange issues. Was any work done on the engine around the time this problem occured?