I'll say it right up front. That TSB is a nice guideline, but it is hardly the end-all-be-all Ford makes it out to be. I've had several trucks that flat out would not run, and they passed every test in that TSB, before and after performing a PMI as the TSB states. If it sounds like it doesn't have fuel pressure when you try to start it, but it has fuel pressure it's probably a bad FICM.
A bad FICM will fail the buzz test, could be the wiring harness, but I would doubt it unless you park it in a barn and see mice making nests in your engine compartment. JMO
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