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Fuel System

Intake Air Temperature (IAT) Sensor Description and Operation

In this manual: Fuel System
General Information — 15Maintenance — 7Engine Mechanical System — 84Engine Electrical System — 49Emission Control System — 22Fuel System — 95Clutch System — 28Manual Transmission — 21Dual Clutch Transmission (DCT) System — 47Drive Shaft and Axle — 20Suspension System — 36Steering — 23Restraints — 39Brake System — 54Body (Interior and Exterior) — 209Body Electrical System — 254Heating, Ventilation, and Air Conditioning — 56
~1min read

Description

The Intake Air Temperature Sensor (IATS) is built into the Manifold Absolute Pressure Sensor. The sensor detects the temperature of the intake air. Air temperature correction is necessary for accurate calculation of the air volume because air density depends on temperature. Therefore, the ECM uses both the MAPS signal and the IATS signal. This sensor is a Negative Temperature Coefficient (NTC) thermistor, and its resistance changes inversely proportional to temperature.

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