Air Temp Sensor Function

The intake air temperature sensor is commonly integrated with the mass air flow maf sensor and is found in the air intake passage below the hood.

Air temp sensor function.

As the ambient temperature sensor plays a direct role in the automated function of the ac system when it is having a problem this may interfere with the system s ability to cool the vehicle. This is because the sensor may be preventing clutch operation because it is disconnected. Ambient temperature sensor function can be scanned with a scan tool or a multimeter. To operate as efficiently as possible car engines rely on the ecu a small computer to monitor and adjust various components and processes as conditions change.

The ambient air temperature sensor symptoms include no ac clutch compressor operation. Intake air temperature sensors iat november 2012. The air charge temperature sensor sends data to the computer which allows it to make continuous adjustments to the engine s air fuel mixture for maximum fuel efficiency. In automotive applications air density varies with the ambient.

This is a resistance based sensor which correlates the temperature of the incoming air with the magnitude of resistance and relays this information to the car computer. An intake air temperature sensor is an essential component of an engine which ensures that the vehicle starts smoothly and that the fuel to air ratio is maintained at appropriate levels for effective combustion of the fuel when the engine is cold. The air mass information is necessary for the engine control unit ecu to balance and deliver the correct fuel mass to the 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.

Any problems with the sensor can result in incorrect calculations by the ecu which may result in a decrease in fuel efficiency. What is an ambient temperature sensor. The intake air temperature sensor measures the temperature of the air entering a car s engine through the intake manifold and relays the information to the engine control unit. Functions of an iat sensor.

The air charge temperature sensor plays an. If the ambient temperature sensor fails or is sending out an inconsistent signal then the ac system may have trouble maintaining cool and comfortable. 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. Iat function the intake air temperature sensor iat has been utilised as an engine control unit ecu input signal from the very first efi systems to the currently used systems as a requirement for calculating the air mass volume for the incoming air charge.