Intake Air Temperature Sensor - Electronic Climate Control

- The ambient temperature sensor measures the temperature of the inlet air. Thus, during recirculation, the sensor measures the temperature of the air drawn from the interior of the car.
- Ambient temperature sensor is resistor of the NTC (negative temperature coefficient) type, the resistance of which falls with rising temperature. The resistance is 9.9K Ohms at 25 °C (77 °F).
- The system functions even if a sensor is faulty. To prevent the entire unit from being disabled if a sensor becomes faulty, the system is programmed to continue operating in a more or less normal manner in this event. However, it will react more slowly and will control the temperature less precisely. The A/C button will flash to indicate the presence of a fault.