Stratus L4-2.4L VIN X (1998)
Evaporator Temperature Sensor / Switch: Description and Operation
SYSTEM OPERATION
The evaporator temperature probe prevents condensate water on the evaporator coil from freezing and obstructing A/C system air flow. It does this
by cycling the compressor clutch on and off. The switch is attached to the evaporator coil with the sensing probe inserted into the coil fins.
The evaporator probe is a temperature sensing element located at the coldest point on the face of the evaporator. Output from the probe is sampled
by the Body Control Module (BCM). It is used to switch the A/C compressor clutch OFF before evaporator freeze up occurs. The clutch is
switched OFF when the probe temperature reaches 0.94 degree Celsius. (33.7 degree Fahrenheit). It is allowed to switch ON when the probe
temperature reaches 2.05 degree Celsius. (35.7 degree Fahrenheit).
The evaporator probe is located on the lower right side of the evaporator housing.
