What is the function of the car ambient temperature sensor?
1 Answers
The function of the car temperature sensor is: To detect the external ambient temperature, and the control system will determine the control method based on the difference between the external temperature and the internal temperature; To provide the ECU with the temperature signal outside the vehicle cabin. The ECU compares this signal with the internal temperature signal to determine the temperature inside the cabin, meeting the needs of the occupants. For example: If the external temperature is 5 degrees and the internal temperature is 30 degrees, the temperature difference is too large. The ECU will control the air conditioning to work, reducing the internal temperature to around 20 degrees, ensuring that the occupants do not feel too hot or too cold. The car temperature sensor is installed on the front bumper mounting bracket and is a thermistor. Characteristics of a faulty car temperature sensor: When the car's temperature sensor is damaged, the engine may overheat, and a yellow coolant temperature warning light will appear on the dashboard to alert the driver to check it; When the car's temperature sensor is damaged, the vehicle may also experience difficulty starting when cold because the system will incorrectly determine that the engine oil and coolant temperatures are too low, preventing normal operation and making the engine hard to start. The car temperature sensor controls the temperature of the engine oil and coolant, helping the engine run better. If the temperature sensor is damaged, the engine's normal operation may be affected, potentially leading to overheating. In such cases, the temperature sensor should be repaired or replaced promptly.
