So I dove into the task of changing out the mode door actuator (MDA) with a new Mopar part. I started long version by dismantling the dash and console until I got the MDA out and installed the new one. Reassembled the dash parts, reconnected the battery, ran the self diagnostic.....
Frik'n code 24 came back . Guess what I said next.
So instead of the total dismantle, I did the internet video short version. Remove ATC bezel, remove radio, left duct, right duct, center duct. At that point I could remove and reinstall the MDA at will and watch its operation during self test. I also checked the vent rotor (the item that the MDA engages) and was able to switch the ducts from floor to defroster by hand with little effort.
I ran several self checks while watching the MDA.Sometimes it would rotate sometimes it would not. When it would rotate, it would turn clockwise (looking at the drive pinion) only, never turned counter clock wise. I would think, a self check test of a "servo", would include a sweep check, from clockwise a to b then counter clockwise b to a.
My next step is to get a known good ATC display and try that. Anyone have one for testing and purchase? If you are in the Rockford Il area drop me a PM.
If that isn't it maybe a junk yard BCM?
Thanks for the help so far.
I hope to beat this yet!