Optima V6-2.7L (2003)
Ambient Temperature Sensor / Switch HVAC: Description and Operation
AMBIENT TEMPERATURE SENSOR
1. The air temperature sensor is located at the front of the condenser fan and detect ambient air temperature. It is a negative type thermistor;
resistance will increase with lower temperature, and decrease with higher temperatures.
2. The sensor output will be used for discharge temperature sensor, sensor fail-safe, temperature regulation door control, blower motor level control,
mix mode control and in-car humidity control.