Automotive air conditioning systems use ntc sensors to monitor air temperature.
Air temp sensor resistance.
Testing the iat sensor.
Causes and symptoms of a bad intake air temperature iat sensor.
The resistance of the temperature sensor changes depending on the intake air temperature.
Take a look at the symptoms and understand why such a problem occurs.
Testing the iat sensor off the vehicle.
A checking iat sensor resistance.
An iat sensor is an important component that is needed while starting up a vehicle s engine.
Two types of iat sensors.
Remove the air intake temperature sensor after first removing the air intake housing.
Different names for the iat sensor.
B checking the iat sensor power and ground circuit.
Verify any suspicions with a visual inspection of the sensor and its connector.
Let the engine cool before doing this as you can be severely burned.
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.
Allow the sensor to cool before further testing.
Intake air temperature sensor location.
Never use this to test.
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.
Use a multimeter and verify the manufacturer s specifications 220 240 ohms at 70 80 f to test this sensor for proper resistance.
As the temperature increases the resistance is reduced which reduces the voltage at the sensor.
The in car temperature sensor icts is an ntc.