A/C System Components
A/C System Components DescriptionA/C Evaporator Temperature Sensor
The A/C evaporator temperature sensor (1) is a temperature sensor to sense the temperature of air discharged from evaporator.
The electrical characteristic is shown.
When temperature is lower than specified, A/C controller makes magnet clutch turn off to prevent evaporator from frosting.
A/C System Introduction
There are two types of air conditioning system, manual air conditioning system and automatic air conditioning system. For vehicles equipped with manual air conditioning system, users manually set inside air temperature, blower speed, airflow outlet and so forth by HVAC control module (1).
On the other hand, automatic air conditioning system is that controller in HVAC control module automatically controls inside air temperature, blower speed, airflow outlet and so forth. Once users set up desired inside air temperature by temperature control selector of HVAC control module, controller in HVAC control module detects inside air temperature, outside air temperature, amount of sunlight, and engine coolant temperature by inside air temperature sensor (2), outside air temperature sensor (3), sunload sensor (4), and engine coolant temperature sensor. Then, controller of HVAC control module keeps desired in-car temperature at any time.