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2000 7,3 no check engine/wait to start
I have a problem on an E450 2000. The engine die after running couple of seconds.
The check engine and wait to start light won't even come on when turning the key to run. The scanner won't communicate with the ecm. I've search and the only thing I found about this is the fuse of the ecm often blow because of a shorted fuel heater. All fuses are fine, and make some pin point test on the ecm and it has all is power and ground...
The ecm relay is working but the fuel pump and the IDM are not getting the ground signal from the ecm. Found a used ECM for 100$ even if I was pretty sure that this was not the problem.... and it do not solve anything.
Check the ignition switch, the diagnostic connector, the inertia fuel cut off swith(as not 12v because of the IDM). Un plugged every related connector searching for rust. Notice the ecm is getting hot??
I'm pretty sure I'm missing something basic, I'm more qualified on gasoline engine. The ECM seem not receiving the ''ok'' from something to turn on... I have acess to wiring diagram from alldata but did not find anything.
A little help would be appreciated, thanks!