Flaps, shafts e.t.c everything is ok, i can easily turn them by hand when i unscrew the motors.

I think the problem its not with motors, when i'm take passenger side temp damper motor (which works good) and swap it with defrost damper motor, it's still the same situation, temp motor works, defrost not.

I have 4 control units each of them works the same.
The temp knobs, fan speed, recirculation works but the floor, defrost motors doesn't.

Hello, from couple of months i have a problem with ECC damper motors, the air comes only from the front, when i switch to floor or defrost nothing happen, Temp adjustment and fan speed works good There is two error codes 2-3-1 and 2-3-3. All damper motors working when i plug them to 9v battery. I've...