Temperature Display

The Compass and Temperature Display Module applies voltage to the Ambient Air Temperature Sensor. The Ambient Air Temperature Sensor is a Thermistor.
^ As the outside temperature increases the Sensor Resistance decreases.
^ As the outside temperature decreases the Sensor Resistance increases.

Lower Outside Temperature causes the resistance of the Ambient Air Temperature Sensor to increase. The increased resistance causes a larger voltage drop across the Sensor. The Compass and Temperature Display Module senses the larger voltage drop and indicates a Lower Outside Temperature. Higher Outside Temperatures cause the resistance of the Ambient Air Temperature Sensor to decrease. The decreased resistance causes a smaller voltage drop across the Sensor. The Compass and Temperature Display Module senses the smaller voltage drop and indicates a higher Outside Temperature. The Compass and Temperature Display Module also senses a vehicle speed signal from the Vehicle Control Module. The vehicle speed signal is used to determine when to update the Temperature Display with a new Ambient Air Temperature Reading. The vehicle must be driven over 30 km/h (18 mph) before the Temperature Display will be updated.