Common Sense + Critical Thinking
Damn, hope you bought a lottery ticket that dayPretty obvious miracle it died right in front of my house and not on the highway, will accept that one. 😂
If you look at the diagram, your ECM/BATT 15amp fuse is powered all the time, those little dots show where the circuits are connected. It's going to the fuel pump relay, the oil pressure switch(and through those two to the pump), prime connector, as well as pins b1 and c16 at the ECM. ECMs rarely fail so very unlikely to be your problem and I agree with Bob that it is most likely a wiring problem. The movement and vibrations from starting/driving could be moving the wires.Edit: looking at the schematic in van manual. Looks like ECMB goes to fuel pump and fuel/oil pressure switch? Cant see anything else thats running off that fuse.
If it is only blowing the fuse while starting/running, then it's most likely between the pump and the relay or between pump and pressure switch as those parts of the circuit are only turned on when the relay is engaged while priming and running and once there is oil pressure(~4psi) closing the oil pressure switch.I can put a new fuse in and it doesnt blow unless i turn the key. I just tested it and as soon as i turn ignition on SNAP the fuse blows.
If it were mine, I would first inspect all of the wiring as well as possible, paying close attention to bends, were it runs close to anything, and where it's supported. If that didn't show anything and I had to drop the tank to inspect the wires, I would go ahead and replace the pump, sock/strainer, filter and get rid of the pulsator that degrades while I was there.