9-3 Viggen Convertible (9400) L4-2.3L Turbo (B235) HO (2001)
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Cabin Temperature Sensor / Switch: Description and Operation
Cabin Temperature Sensor
The cabin temperature sensor is positioned in the dashboard under the ACC unit. The unit has a built-in suction fan that draws cabin air past an NTC
resistor.
The cabin temperature sensor in the most important value for the ACC unit and is compared to the cabin temperature in order to decide if the mixed-air
temperature should be increased or decreased.
The cabin temperature is adjusted with respect to the outside temperature so that the temperature experienced matches the set temperature. As the
difference between selected temperature and adjusted temperature increases, the ventilation fan speed will also increase.
