The impact is that you now need a replacement pcm as the regulator is internal to it.

Slide down to your local pick and pull and grab a matching part number pcm from a wreck, avoid reman or repaired pcm's like the plague. Plenty of threads here from members that chronicle the issues that come from them as they are mostly cores being resold that were someone else's problem to start with.

Send me a pm with your email and I'll flash your replacement for you so it's plug and play ready for your skim keys and security when it comes back.

 

alternator was installed in jeep or bench tested.
Did they check for codes - there are codes for field circuits.
System is a simple 2 wire field, battery voltage from ASD relay and control side goes to PCM.
Is there voltage on field wires?

 

If it's charging you battery to 100%, why are you worried please?

 

Autozone bench tested it and it passed. There is no voltage regulator so it failed. The vehicle is clearly not charging.

 

Excellent