Air Temp Sensor Resistance

Temperature and resistance values of an iat sensor.

Air temp sensor resistance. You will need a hair drier and ohmmeter for the testing portion of this process. Allow the sensor to cool before further testing. Never use this to test. Causes and symptoms of a bad intake air temperature iat sensor.

A checking iat sensor resistance. Two types of iat sensors. Automotive air conditioning systems use ntc sensors to monitor air temperature. Verify any suspicions with a visual inspection of the sensor and its connector.

The in car temperature sensor icts is an ntc. Let the engine cool before doing this as you can be severely burned. 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.

Remove the air intake temperature sensor after first removing the air intake housing. The control unit evaluates these voltage values since they are directly related to the intake air temperature low temperatures result in high voltage values. 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 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.

Take a look at the symptoms and understand why such a problem occurs. The resistance of the temperature sensor changes depending on the intake air temperature. B checking the iat sensor power and ground circuit. Testing the iat sensor off the vehicle.

Intake air temperature sensor location. As the temperature increases the resistance is reduced which reduces the voltage at the sensor.