Air Delivery

The climate control unit receives battery voltage at all times through fuse 56. With the ignition switch in RUN, voltage is supplied to the climate control unit. The control unit is grounded at G303.


The climate control unit controls the air delivery motors, and supplies a 5 VDC reference voltage to the air mix and mode control motors.


The air mix motor regulates the mixture of cold and hot air by varying the position of the heater/ evaporator door.


The mode control motor controls the direction and volume of outlet air. Air flow can be directed to the dashboard vents or the corner vents.


Both the air mix control motor and mode control motor are grounded at the sensor ground terminal of the climate control unit.


The max cool motor and recirculation control motor are both energized through fuse 19 when the ignition switch is in RUN. Both motors are controlled by two position inputs from the climate control unit.


The max cool motor controls the position of the max cool door; the door has two positions, open and closed.


The recirculation control motor regulates the position of the fresh/recirc door. The motor is controlled by two position inputs from the climate control unit, "Recirc" and "Fresh".