Edge Juice w attitude cts 2 issue

Hey guys, I got a 2000 2500 with the edge CTS two with attitude. I keep getting the failed to connect with juice error message and it was causing the truck to throw a map sensor code so I just unhooked the map sensor that goes to the edge and hooked the factory harness back up. I’ve been running the edge unplugged but I want to get it back working. There is power going into the box at the fuse box and the screen comes in they just want connect I have power to screen a juice box. Any help would be greatly appreciate.