Caravelle L4-153 2.5L SOHC (1986)
Cabin Temperature Sensor / Switch: Description and Operation
Semi-Automatic Temperature Control (SATC)
Fig. 3 System components
The in-car-sensor assembly is connected to the aspirator suction nipple and the instrument panel. Air from the passenger compartment is drawn
through the instrument panel opening past a temperature sensing thermistor located in the sensor assembly. Electrical resistance of the thermistor
increases when in-vehicle air temperature decreases and decreases when the temperature increases. This action permits the system to detect in-vehicle air
temperature changes.