That's an evaporator temperature sensor.
It is a negative temperature variable resistor (NTC). If the temperature is high, the resistance is low, consequently, if the temperature is low, the resistance is high. So, if the wires leading to the sensor has high resistance, it would simulate low temperature. If the sensor connector was unplugged, the resistance would be infinite meaning it will cause the climate control computer to disable the compressor operation. Check the circuit resistance of the circuit first. Don't be an unthinking parts replacer.




The placement of the sensor is as follows:


With the inlet and outlet to the left, the sensor tip is at 43.5 mm from the mating edge between the upper and lower case and 159 mm measured from the edge of the evaporator on the right. That is the calculated superheated region (installation location of the evaporator temperature sensor)