So car in question is a 2005 R53 with about 120k on it. CEL came on last year (P1477 + P2400), and I already went ahead and checked the wires on the control arm. They were in fact pinched, shorting, and corroded. I cleaned them up, insulated them and the lights are still on after that. Next course of action I'm unsure where to go with.

This is what I found someone day previously. What I'd like to do is find a way to bench test the LDP to rule that out. I'd also like to test the wiring, does anyone by chance happen to have a pin out or schematic of here the LDP plug wires go to so I can check for continuity and resistance?

Gas cap was replaced previously as well. I am not getting the gas cap light on the dash, so I assume that's not the issue.