Hyundai i20 Quiz
Engine/Fuel Control System

Intake Air Temperature (IAT) Sensor Description and Operation

In this manual: Engine/Fuel Control System
General Information — 17Engine Mechanical System — 79Engine Electrical System — 50Emission Control System — 22Engine/Fuel Control System — 107Clutch System — 27MANUAL TRANSMISSION SYSTEM — 21Drive Shaft and Axle — 18Suspension System — 29Steering System — 21Restraint — 41Braking System — 53Body Work (Interior and Exterior) — 190Body Electrical System — 181Heating, Ventilation and Air Conditioning — 58
~1min read

Description

Built into the manifold absolute pressure sensor, the intake air temperature sensor (IATS) measures the temperature of the intake air. Air temperature correction is necessary to calculate the air volume accurately, because air density depends on temperature. The ECM uses the IATS signal as well as the MAPS signal. It is a negative temperature coefficient (NTC) type, and its resistance is inversely proportional to temperature.

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