I have an ls3 swapped Camaro, that ran great until my foot snagged a wire getting in. Car cut off and will not start up. It cranks but will not start. The swap was performed by hawks motorsports, so wiring is legit.its drive by cable converted running off ls1 PCM(red&blue connectors)
I Have no spark, no injector pulse. Ecm will not connect to scan tool.(tried multiple).
fuel pressure is good.(gauge on rail).rpm gauge doesn't move during cranking,(actually seems to go down during cranking)
The chassis grounds that I could locate were good.
​​​​no blown fuses, I have power to the column and ecm. But no power to either wire coming from the ignition switch itself. (Not sure which one should have voltage from manual. Tested Pinout for voltage at crank and cam sensor, got a oscillating voltage, but not sure if i tested the correcr pins because my wire color didnt match diagram. Ran a diagnostic tree, came up with bad wiring in charging system. I feel like it's the ecm, but I'm not positive. Can anyone point me in the correct direction, and what pin can I check for signal or power out of the ecm?

Rgor

 

Somehow I doubt that checking for signal, or ANYTHING ELSE, "coming out of the ECM", will yield any useful information.

Find the wire you kicked and plug it back in. Quit dinking around with ignition switch, ECM, column, "diagnostic tree", etc. (unless of course that's what your foot caught on) The wire is probably hanging down under there somewhere obvious. Then once you have it reconnected, tie it up so it's out of the way of your feet.

If I was the guessing kind, I'd guess that you kicked The Wire that feeds power to the ECM. Which is one of the main reasons why "check for signal" and "power out" is going to be a waste of time... there's almost certainly no power going INto it. Most likely this wire was plugged into the fuse box but since I didn't do the swap I can only GUESS, maybe Hawk's can tell you what color it is, where they usually plug it, etc., better than the random Internet can GUESS at it.

 

Ok. I'm gonna give it another look. It was the 1st thing I did, and I just felt like I was getting no where. And I will give hawks a call Monday. Get back with the results.

 

Again, if I were the guessing kind, I would GUESS that the wire that's loose is either red (batt) or pink (ign), coming from the foreign (LS3) ECM, to get power from the fuse box. Very simple. After all, that LS3 harness is COMPLETELY independent, electrically, from the whole rest of the car; it only needs batt and ign which are of course CRITICAL, and maybe, MAYBE, a VERY FEW other connections to The Car, to do its job (like maybe brake lights for example); none of which will keep the ECM from generating spark and injector pulses. It's just not that hard or complicated. Just logic.

Now, I'm not Hawk's, and don't know their internal design discipline, but I've done a few engine swaps myself; and being incredibly LAZY and very STUUUPID to begin with, I ALWAYS try to stick with the factory wiring colors, and the simplest possible connections, for this sort of thing. That way I'm not reinventing the wheel somehow or outsmarting myself with cleverness (which since I'm the only person on Earth that I'm smart enough to outsmart, is a menacing possibility I have to remain constantly on guard against). In this case, that would look, to me, like a red and a pink wire, coming through the firewall somewhere near the fuse box, made of wire that's different from The Car's original factory wiring, with aftermarket crimped-on connectors, and maybe an in-line fuse or some such; and I would be looking to plug the red one onto a batt terminal in The Car's fuse box, and the pink one onto Ign. Not that hard or complex. Even I can wrap both of my brain cells around it, even if maybe not both at the same time.

It's just a CAR. One of the most common manufactured items on the planet, able to be produced by virtually every human culture in every corner of the globe; and simple DC electricity; and LOGIC. It just doesn't get any simpler. You can DO THIS.