Air Temp Sensor Resistance

Let the engine cool before doing this as you can be severely burned.

Air temp sensor resistance.

Take a look at the symptoms and understand why such a problem occurs. The in car temperature sensor icts is an ntc. 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. Remove the air intake temperature sensor after first removing the air intake housing.

Use a multimeter and verify the manufacturer s specifications 220 240 ohms at 70 80 f to test this sensor for proper 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. Causes and symptoms of a bad intake air temperature iat sensor.

Automotive air conditioning systems use ntc sensors to monitor air temperature. 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. Testing the iat sensor. An iat sensor is an important component that is needed while starting up a vehicle s engine.

B checking the iat sensor power and ground circuit. Temperature and resistance values of an iat sensor. The resistance of the temperature sensor changes depending on the intake air temperature. The control unit evaluates these voltage values since they are directly related to the intake air temperature low temperatures result in high voltage values.

Intake air temperature sensor location. Allow the sensor to cool before further testing. Testing the iat sensor off the vehicle. Verify any suspicions with a visual inspection of the sensor and its connector.

A checking iat sensor resistance. Never use this to test.