I understand what you mean. At this point it's been several big bills. 3 grand alone for a diagnosis & PCM replacement less than a year ago. Several more into excessive replacements of FPDMs and pumps as well as new wiring & connectors. It's just gotta run long enough to get traded in. It has nearly 200,000 miles on the clock & its beat to hell. The bell tolls for thee, 5.4...
I hear the Ecoboosts are just awful. I've heard from several guys saying its in the shop every 3 months, thing gets a warning buzz that says something cryptic like "change oil" and back on jacks it goes. Constantly needing just oil and filters every 10k miles and all. Think I'll steer clear of those
As for the CJB, we've had those for years - used to just be plain in-cab fuse panels. Easier & cheaper to solder pins & connectors on a board than make all the old school wiring connections but apparently it's very hard to make an important piece of the system replaceable. When I worked a Ford parts counter I saw tons of these 14A067s move to the tune of around $499 to $700 depending on who's asking. Sounded like a revenue generating stream to me, and not to mention no one ever made aftermarket CJBs. Never really knew/paid attention to what they did until these issues started... I just figured they were an overpriced fuse box.
I'd encourage you to take another look at the pic, the LB/OG and BN/OG wires from the PCM go directly to the FPDM which then in turn regulates the 12V its getting through the relay in the CJB. It appears the relay circuit in the top right is just 12V on/off. It might even just be running off of a regular hot/start/run line which would have the 2-sec prime controlled via the FPDM rather than CJB relay.