Air Temp Sensor Resistance

The intake air temperature sensor or iat sensor has the core function of monitoring the temperature of the air that is entering the engine of your vehicle.

Air temp sensor resistance.

You will need a hair drier and ohmmeter for the testing portion of this process. A faulty sensor can decrease the life of the engine and reduce the efficiency of fuel consumption. Allow the sensor to cool before further testing. Intake air temperature sensor location.

An iat sensor is an important component that is needed while starting up a vehicle s engine. Automotive air conditioning systems use ntc sensors to monitor air temperature. This information is very useful for the engine control unit or ecu for many functions and calculations such as calculating the air density for effective ignition timing and fuel efficiency. The resistance of the temperature sensor changes depending on the intake air temperature.

Temperature and resistance values of an iat sensor. Remove the air intake temperature sensor after first removing the air intake housing. Two types of iat sensors. A checking iat sensor resistance.

The control unit evaluates these voltage values since they are directly related to the intake air temperature low temperatures result in high voltage values. Let the engine cool before doing this as you can be severely burned. The in car temperature sensor icts is an ntc. Take a look at the symptoms and understand why such a problem occurs.

Verify any suspicions with a visual inspection of the sensor and its connector. As the temperature increases the resistance is reduced which reduces the voltage at the sensor. Testing the iat sensor. Use a multimeter and verify the manufacturer s specifications 220 240 ohms at 70 80 f to test this sensor for proper resistance.

Testing the iat sensor off the vehicle. Never use this to test.