Air Temperature Actuator

The vehicle operator can determine the level of A/C by sliding the temperature control, located on the HVAC control module, to any setting. The temperature control can change the vehicle's air temperature regardless of the HVAC mode setting, heater or A/C. The fuse block provides power to the left air temperature actuator through the ignition 3 voltage circuit. Power and ground are provided to the HVAC control module by the ignition 3 voltage and ground circuits.

When a desired temperature setting is selected, the HVAC control module outputs a voltage signal to the air temperature actuator over the control circuit of the air temperature actuator. A potentiometer inside the HVAC control module varies the voltage value on the control circuit based on the position of the air temperature switch. Based on the voltage value on the control circuit, the actuator positions the air temperature door to a to divert sufficient air around or through the heater core to achieve the desired vehicle temperature. Ground is provided by the ground circuit of the air temperature actuator.