[dcb]

I forget commonrail is a completely different animal, is there a better schematic available?

Bouncing the whole cpu sounds like it might reduce the life expectancy of the cpu, so interrupting the injectors is probably the most thorough, least likely to break something else approach.

we mess w/cam or crank sensors on the gas cars because it is an easy way to kill both injection and ignition, with a switch that only needs to handle signal currents.