Air Temp Sensor Resistance

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.

Air temp sensor resistance.

A faulty sensor can decrease the life of the engine and reduce the efficiency of fuel consumption. The control unit evaluates these voltage values since they are directly related to the intake air temperature low temperatures result in high voltage values. An iat sensor is an important component that is needed while starting up a vehicle s engine. Remove the air intake temperature sensor after first removing the air intake housing.

A checking iat sensor resistance. Two types of iat sensors. Never use this to test. B checking the iat sensor power and ground circuit.

Intake air temperature sensor location. Take a look at the symptoms and understand why such a problem occurs. Use a multimeter and verify the manufacturer s specifications 220 240 ohms at 70 80 f to test this sensor for proper 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. Different names for the iat sensor. 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.

Allow the sensor to cool before further testing. Verify any suspicions with a visual inspection of the sensor and its connector. 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.

Testing the iat sensor off the vehicle. The in car temperature sensor icts is an ntc.