Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: 2012 Fusion HVAC Blend Door Help Needed
Can't find a wiring diagram for that year either, but we can make a few deductions. First find the pin(s) carrying 12V with the blend door controller in mid position. Then look for one that's ground. That should leave either 3 or 4 remaining. Out of those, look for the pair(s) that have varying continuity when the blend door adjuster is turned. If the remaining are all open or have near complete continuity with no variations, you might need a new controller.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?