Find the test port for fuel pressure on fuel injector rail, looks like a tire valve with blue cap if still present. It would be best to test the pressure, should be around 70 psi and hold for a few minutes. [at least depress the valve to see if fuel squirts up.. You could also spray some carb cleaner into throttle body to see if it wants to start then, this would confirm a lack of fuel. How old is fuel filter?
if your powering up fuel pump circuit,do you have fuel pressure at this point? The pump should run if jumpered, do you hear it?
Try a different spare key if theft light flashes rapidly when attempting to start, this would indicate the pcm is locking out fuel/ This would need a computer scan tool to be able to pull codes from pats module, and check to see if its getting enable signal or not... an obd2 code reader will NOT work for this.
when i power up the fuel pump i have fuel pressure,and the engine doesn't start, cranks but doesn't start, when you first turn the key on the fuel pump comes on for 1 second, what does parts stand for and how does the theft shut down the engine, ( fuel pump, injectors ? )