QuestionHi Kevin,
I got a 1996 Chrysler Concorde and when I turn the heater on it will only blow through the front(dashboard) vents. The direction is controlled by buttons, I press the buttons they light up, but the air still blows only through the same front vents, won't blow through windshield defrost vents, legs, or any other for that matter.
Would really appreciate you help. If it was just manual control I would look for vacuum leaks, but with the buttons, I do not know where to start.
Thanks in advance.
Egor.
AnswerMODE DOOR ACTUATOR (ATC)
The mode door actuator is located on the lower left side of the A/C- Heater housing. This actuator controls the position of the panel/bi-level door and the floor defrost door.
Power for the mode door actuator is supplied on circuit C26 from the Body Control Module (BCM) This is a 5 volt feed.
Circuit C35 is the mode drive circuit from the BCM. to the actuator.
The C37 circuit is the feedback from the actuator to the BCM. The BCM uses this information to adjust the door to the proper position.
Circuit C57 is the sensor return to the BCM. This circuit is spliced with the other actuators in the housing.
Circuit C34 is the common line that is spliced, and connects, to the other sensors in the housing.
MODE DOOR ACTUATOR (MANUAL A/C)
The mode door actuator is located on the lower left side of the A/C- Heater housing. This actuator controls the position of the panel/bi-level door and the floor/defrost door.
Power for the mode door actuator is provided by the control head on the C26 circuit. This is a 5 volt feed.
Circuit C35 is the mode drive circuit from the control head to the actuator.
The C37 circuit is the feedback from the actuator to the control head. The control head uses this information to adjust the door to the proper position.
Circuit C57 is the sensor return to the control head. This circuit is spliced with the blend air door actuator.
Circuit C34 is the common line that is spliced, and connects, to the blend air door actuator and the recirculation door actuator
