#1 - does it have spark ? ( remove one wire from a coil pack and hold it real close to the socket and see if it sparks while trying to start )
#2 - does it have fuel ? ( check for pressure at the test port front passenger side of the engine, kinda like a big tire valve, push the schrader valve with something, don't have your eyes near )

If both 1 & 2, then just maybe a PTCM, but they very seldom ever fail.
O, and make sure you don't have any blown fuses anywhere.