Dodge Repair: Mode Selector, software calibration, shaft position

Question
My 1997 Dodge Stratus mode selector stop working.  The selector works only on defrost no matter which mode I select.  The defrost always work when the heat or AC is on.  Any ideas?  Thank you!  Shanon Gregory

Answer
possible motor it self ,wire issue  or AC control head issue.


MODE DOOR ACTUATOR MOTOR
NOTE: If battery voltage is low or not sensed at the actuator/motor for less than a (60) second interval, the actuator/motor will be out of calibration. Remove the M1 (I.O.D.) fuse for a minimum of (60) seconds. The actuator/motor will then self calibrate itself upon reinstallation of fuse.

The mode door actuator is an electric motor. It mechanically positions the A/C unit panel/bi-level door and the floor/defrost door. Prior to part replacement, re-calibration of the HVAC actuator is recommended. Calibration is performed by disconnecting the battery negative cable or the removal of the instrument panel M-1 fuse. Electrical power should be re-established after (60) seconds which will automatically initiate the software calibration procedure. If this procedure fails, it will be necessary to replace the mode door actuator/motor. The mode door actuator/motor is not serviceable and must be replaced if found to be defective.

The mode door actuator is located on the upper left side of the A/C- Heater housing Mode Door Motor Location

REMOVAL
Disconnect battery negative cable.
Remove left underpanel silencer/duct.
Remove electrical connection on actuator Mode Motor Connector
Remove actuator retaining screws. Then pull actuator straight down. Upon removal, note the shaft position of the actuator, because the shaft on this motor is keyed. When installing new actuator, its shaft must be positioned in the same location.
INSTALLATION
For installation, reverse the above procedures.