T2005 Neon wont st art,no fire to plugs. no impulse to injectors, starter wont turn with key.

what about your security system? Is the security lamp on the dash on of flashing? If it is your security system, I doubt I can help you from here? Any applicable trouble codes?

Battery has a full charge? Sometimes the battery gets run down from testing?

The asd relay supplies primary voltage to fuel injectors--coil pack and other, engine cranking. The computer usually has to see both the cam and crank sensor signals or it won't ground the asd relay. I can only make suggestions on what to check.

Ok then so what is you question.????????

First check the Timing belt next cam sensor CPS then the throttle position sensor TPS they work together so to tell if all of the internal parts are in line. That way they will not bang togather.

The ASD relay powers the injectors and the coil.
Have you checked it to see if you have power in and out ?
The engine computer grounds the starter relay, injectors and coil, could be something going on with it.

Easy way to check plugs wires while driving, get 4 or 6 small neon lamps depending on how many cylinders,the neon lamps used in appliances to show they are on are good NOT LEDs.
Remove resistors from neon and connect one side of neon lamps together and earth to body, take other side of each lamp and solder long single telephonr wire and wind about 10 turns around each plug wire insulation a little way from plug leave end of this wire disconnected. make sure the end of wire does not earth anywhere on body leave unconnected. the high voltage going through plug wire will induce enough voltage to fire neon and show plug works if one neon does not flicker as plug fires it the bad one.
This will only show electrical misfire not injector problem.
The best time to do this test is at night neons will flicker bright at night. As a mechanic how to check injector and injector voltage.

If the Starter isn't turning the engine over, but you hear a clicking sound, you may have a bad Starter.
If the Starter is turning the engine over, but you are getting no Spark, you may have a failed Camshaft or Crankshaft Position Sensor, or your Timing Belt may have jumped or broken(common on the neons).
If the Starter is turning the engine over, but you are getting Spark, you may have a failed fuel pump, fuel pump relay, or fuel pressure regulator.

Before you start replacing sensor, double check the Timing belt to ensure it hasn't broken or jumped, and check to see if you are getting a spark or not.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

ck see if firing at plugs ck see if has fuel pressure could be timing belt

if it fires then dies, you have to reset the alarm system with the key/remotes???otherwise you need to plug in the diagnostic computer(saves hours of "fun")

check your ecm which is your computer brain that tells the car what to do with electronic impulse signals. also no fuel is reaching fuel rail and injectors. also check your wiring around your spark plug boots too.

the other solution is the alternator.. or the spark plugs arnt firing