Hyundai Elantra HD: Intake Air Temperature Sensor (IATS). Description and Operation
Function And Operation Principle
Intake Air Temperature Sensor (IATS) is installed inside the Mass Air
Flow Sensor (MAFS) and detects the intake air temperature. To calculate precise
air quantity, correction of the air temperature is needed because air density
varies according to the temperature. So the ECM uses not only MAFS signal but
also IATS signal. This sensor has a Negative Temperature Coefficient (NTC) and
its resistance is in inverse proportion to the temperature.
