Manual Climate Control System
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The manual climate control system heats or cools the vehicle interior depending on the position of the function selector switch and the temperature selected. The position of the function selector switch determines heating or cooling and air distribution. The temperature control setting determines air temperature.
The blower motor switch:
- sets the blower motor speed.
- directs the blower motor path to ground through the blower motor resistor to allow blower motor operation in LO, M2 (medium-low) and Ml (medium-high).
- provides the blower motor a direct path to ground through the blower motor switch, which allows the blower motor to operate in HI.
The temperature control actuates a cable attached directly to the temperature blend door located in the heater core housing.
The function selector switch:
- controls various mode door vacuum motors to determine the airflow position.
- enables blower motor operation.
- combines a vacuum switch and 2 electrical switches.
- supplies an A/C request signal to the PCM in MAX A/C, A/C, A/C RECIRC, DEF/FLOOR and DEFROST positions.