Climate Control System - General Information and Diagnostics
CLIMATE CONTROL SYSTEMManual Climate Control System
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 M1 (medium-high).
- gives 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 switch actuates a cable attached directly to the temperature blend door located in the heater core housing.
The function selector switch:
- determines where the system airflow is directed.
- enables blower motor operation.
- combines a vacuum with 2 electrical switches.
- supplies power to the A/C clutch circuit in the MAX A/C, A/C, FLOOR/DEFROST and DEFROST positions.