Where is the outdoor temperature sensor located on the Audi A3?
1 Answers
The sensor is installed at the position where the circulating water in the engine returns to the radiator. It can detect the temperature inside the engine. Generally, cars have a thermostat, so the temperature is always controlled at 90 degrees, which is the optimal operating temperature for the engine. Below is relevant information: 1. Water temperature sensor: The water temperature sensor, also known as the coolant temperature sensor, is divided into two main types. Regardless of the type, its internal structure consists of a thermistor with a resistance ranging between 275 ohms and 6500 ohms. Moreover, the resistance increases as the temperature decreases and decreases as the temperature rises. 2. Function: The role of the water temperature sensor is to convert the coolant temperature into an electrical signal. After inputting the signal into the ECU, it: adjusts the fuel injection amount—increasing the injection amount at low temperatures; adjusts the ignition timing—advancing the ignition timing at low temperatures and retarding it at high temperatures to prevent knocking; affects the idle control valve—at low temperatures, the ECU controls the idle control valve based on the water temperature sensor signal to increase the idle speed; affects the EGR valve.
