Is there an RPM signal when cranking the engine (if there is a tachometer in the vehicle)? If there isn't, do you have access to a live data scan tool? If you do, check for an RPM signal to see if there is one. If there isn't, my first suspect is the crankshaft position sensor.
Take a look through this link. It discusses the most common symptoms of a bad crankshaft position sensor.
Also, I attached pics below showing the entire wiring schematic for the engine controls. I highlighted the wire you are referring to. It should have 12v from the injection 1 fuse. Check that fuse as well. Also, make sure not only the fuse is good, but also that it has power to and from it. (with the key on run position). Here is a link you may find helpful:
Note: I had to cut the schematics in half to make them readable. I did overlap them so you can follow from one to the next. Also, the highlighted wire is the one to the module.
Images (Click to enlarge)
Monday, July 12th, 2021 AT 9:21 PM