Just had same issue, replaced ficm, now it's good. But to make sure here it goes:
1. Ficm does different things (i believe pulsing inj is one of them)when EOilTemp is below 68*F, so the test will need to be done in the morning after sitting ALOT.
2. I think older ficm programs don't pulse injectors(I think)
3. My ficm volts were fine after engine warmup, so I was stumped for a while, but they were low when not at full temp. After you've load tested batteries and checked alternator(it can take a few mins of running to make voltage). Follow the test at Circuit Board Repair - Ford 6.0 FICM Repair | Circuit Board Medics
. If your volts go below 45v then the ficm power board is bad.
4. If the ficm is bad like this, check wiring for chafes and shorts, then before you replace it(because you can't buy a logic half shell) take it to ford to get the ficm updated with latest flash, and if the logic board is bad(possible because it's not pulsing). If its good then you can get the half shell from ford, or get the bulletproof diesel one-way better, have the dealer do it or DIY however you choose.