If anyone ever runs into this problem here's what it was. There is a "source address ground" at every PDM on a different pin. It runs bundled with the can bus network wires. The section of wire had an open at the spade connector and was held together by the plastic only. You can pull on it...
Hello all. I am a professional tech working at a big dealership in the PNW. I have a 2018 257 that has developed some really odd ballast issues. I'll try to supply all of the relevant factors.
I replaced the V drive on this unit after which all the electrical functions were working fine...