Dakota Quad Cab 2WD V8-5.9L VIN Z LDC (2002)
Evaporator Temperature Sensor / Switch: Description and Operation
The evaporator temperature sensor is a temperature sensing element located at the coldest point on the face of the evaporator. Output from the probe is
sampled by the HVAC Control Module. The evaporator temperature sensor is used to switch the A/C compressor clutch OFF before evaporator
freeze-up occurs.
Output from the probe is sampled by the HVAC control module. The A/C compressor clutch is switched OFF/ON when the probe temperatures are near
0 °C (32 °F).
NOTE: Hysteresis and OFF/ON temperatures vary depending on the blower speed and software algorithm.
The evaporator temperature sensor prevents condensate water on the evaporator coil from freezing and obstructing A/C system air flow. The evaporator
temperature sensor is non-repairable, and must be replaced if found faulty
