Bringing back a thread from the dead. Excellent info in here, and the correct part numbers and functions of the actuators.
My car had a bad driver's side temp actuator, so when I wanted AC, it was blowing hot air. Inconvenient.
I was not looking forward to taking out the dash, so I tried it from the bottom, above the pedals. It is a PITA, but it's possible. Didn't even take too long, but it's just very tight.
I took off the panel above the pedals, then removed the rectangular MT/AT module that is attached to the steering shaft. 3 electrical connectors, a clip, and 2 10mm bolts hold it to the shaft. I used a Gearwrench to take them out.
With the module removed, I could see 2 of the 3 screws, and the arm that is supposed to actuate the temp flap. When I turned the key on, and adjusted the temp, it moved twice, then quit. So I removed the 2 screws, and squeezed the white tube so the ziptie would come off the bottom tab of the actuator.
The 3rd screw is out of sight on the top, and recessed a bit, and hidden by the white tube. It helps if you have a mirror, or a tiny snake camera ( I have one that connects to my phone, very handy). Look at the bracket on the new actuator to get an idea of where the screw goes. I jammed my hand past the wire bundles and used a stubby #2 screwdriver to take the screw out. The actuator comes out pretty easily.
To get it back in, I used electrical tape to secure that 3rd screw to the bracket, and carefully put the new unit in, just starting the bottom 2 screws and making sure the pin on the actuator's arm was in the slot for the flap lever. Then I tightened up that 3rd screw, then the other 2.
It works!
-Paul