FordTechOne
FRF Addict
Looks like that may be the DC to DC converter control module. Below is a pinout for it. List start signal at pin 2 but also a few fuses that you may want to look at. (if this is the correct module)
View attachment 153913
View attachment 153915
View attachment 153917
Correct. It is the DC/DC Converter Module. It’s purpose is to stabilize system voltage during auto stop/start events.
Disconnecting the DC/DC Converter Module should not cause PCM damage; I would be suspect of what other circuits or components they disconnected or modified.