Sorry to bump an old thread, but I was looking for some clarification, as I have been having an issue where all is working fine except for heat and only heat is coming out of the passenger side dash vents (foot vents are fine, I think). As mentioned in multiple posts after reading all 8 pages, there is a ton of conflicting information. The post above me was great, and I hope some of y'all can confirm it being correct (I have no clue, unfortunately).
So, to figure out WHICH actuator should be looked at depending on symptoms, could someone please explain the functional difference between the 4 actuators? Better yet, what symptoms would be seen for a malfunction for each?
On that note, how can you tell the difference between a blend door needing replacing versus a motor needing replacing?
Thanks guys!
Also: From looking at stuff on Sparky's Answers, it seems he was pulling codes that was diagnosing specifically which actuator was out. Is this true?