According to the manual on my car pin 1 and 2 should have 12v with key on. Pin 2 and 3 5v with key on. That part tested fine. The N75 is supposed to have 25-45ohms mine showed 8ohms. Egr supposed to be 14-20ohms mine showed 10ohms. Maybe that's why swapping them didn't do me any good, both of them are bad. I'm going to have a guy with a VCDS diagnose for me soon.