Where is the intake air temperature sensor located on the Volkswagen Touran?
1 Answers
Intake air temperature sensor is located on the intake hose after the air filter or on the mass air flow sensor. Working principle of intake air temperature sensor: The intake air temperature sensor is a negative temperature coefficient thermistor. When the temperature rises, the resistance decreases, and when the temperature drops, the resistance increases. As the resistance in the circuit changes, it causes voltage variations, thereby generating different voltage signals to complete the automatic operation of the control system. When the engine is cold, the signal from the intake air temperature sensor is basically the same as that from the engine coolant temperature sensor. When the engine is warm, its signal voltage is approximately 2 to 3 times that of the coolant temperature sensor. Function of intake air temperature sensor: To detect the intake air temperature of the engine and convert it into a voltage signal input to the ECU as a signal for fuel injection correction.