Thanks biggie. I know this is a 3 year old thread but a Google search for the 77-48 code brought me here. As soon as I saw smashed ACD connector I knew what the problem was. I disconnected the harness and was back in business. BrianDo you have a ACD connector on your machine? The electrical plug. Is it Bent/Damaged? Unplug it from the main harrness. The connector is in the back door.Big round plug on the left. The code is for multiple key switches