Air Temp Sensor Resistance

The resistance of the temperature sensor changes depending on the intake air temperature.

Air temp sensor resistance.

As the temperature increases the resistance is reduced which reduces the voltage at the sensor. Two types of iat sensors. Remove the air intake temperature sensor after first removing the air intake housing. A checking iat sensor resistance.

Testing the iat sensor off the vehicle. 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. 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.

Causes and symptoms of a bad intake air temperature iat sensor. Let the engine cool before doing this as you can be severely burned. Never use this to test. Different names for the iat sensor.

B checking the iat sensor power and ground circuit. Intake air temperature sensor location. You will need a hair drier and ohmmeter for the testing portion of this process. An iat sensor is an important component that is needed while starting up a vehicle s engine.

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. Verify any suspicions with a visual inspection of the sensor and its connector. The in car temperature sensor icts is an ntc. Automotive air conditioning systems use ntc sensors to monitor air temperature.

Use a multimeter and verify the manufacturer s specifications 220 240 ohms at 70 80 f to test this sensor for proper resistance. Temperature and resistance values of an iat sensor.