300E (124.030) L6-3.0L (103.983) (1986)
Evaporator Temperature Sensor / Switch: Description and Operation
Evaporator Temperature Sensor
PURPOSE
The evaporator (cooling) temperature sensor, which is located at the left side of the evaporator housing, sends evaporator temperature information to the
push-button control unit.
CONSTRUCTION
The evaporator temperature sensor is a negative temperature coefficient (NTC) type resistor. As the surrounding temperature increases the resistance
decreases.
OPERATION
The temperature of the evaporator produces a resistance value in the sensor circuit. The resulting current flow in the sensor circuit is recognized by the
ACC control unit as a measurement of the evaporator temperature.