Air Temp Sensor Resistance

Testing the iat sensor off the vehicle.

Air temp sensor resistance.

Allow the sensor to cool before further testing. A checking iat sensor resistance. Automotive air conditioning systems use ntc sensors to monitor air temperature. Let the engine cool before doing this as you can be severely burned.

A faulty sensor can decrease the life of the engine and reduce the efficiency of fuel consumption. Temperature and resistance values of an iat sensor. B checking the iat sensor power and ground circuit. Remove the air intake temperature sensor after first removing the air intake housing.

Testing the iat sensor. 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. 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.

Two types of iat sensors. The in car temperature sensor icts is an ntc. You will need a hair drier and ohmmeter for the testing portion of this process. As the temperature increases the resistance is reduced which reduces the voltage at the sensor.

The control unit evaluates these voltage values since they are directly related to the intake air temperature low temperatures result in high voltage values. Never use this to test. Intake air temperature sensor location. Different names for the iat sensor.

An iat sensor is an important component that is needed while starting up a vehicle s engine. Causes and symptoms of a bad intake air temperature iat sensor.