Hyundai Sonata: Engine Control System / Intake Air Temperature Sensor (IATS) Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Engine Control System / Intake Air Temperature Sensor (IATS) Description and Operation

Description

Intake Air Temperature Sensor (IATS) is included inside Manifold Absolute Pressure Sensor 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 MAPS signal but also IATS signal. This sensor has a Negative Temperature Coefficient (NTC) Thermister and it's resistance changes in reverse proportion to the temperature.

Manifold Absolute Pressure Sensor (MAPS) Repair procedures

Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the MAPS at idle and IG ON. Specification: Refer to "Specification" Removal 1. Tur ...

Intake Air Temperature Sensor (IATS) Specifications

Specification TemperatureResistance (k?)°C°F-40-4040.93 ~ 48.35-20-413.89 ~ 16.030325.38 ~ 6.0910503.48 ~ 3.9020682.31 ~ 2.57401041.08 ~ 1.21501221.56 ~ 1.74601400.54 ~ 0.62801760.29 ~ 0.34 ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: AVN Remote Controller (Sonata Sports) Components and Components Location
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Hyundai Sonata LF 2014-2019 Service Manual: Manifold Absolute Pressure Sensor (MAPS) Description and Operation
Description Manifold Absolute Pressure Sensor (MAPS) is a speed-density type sensor and is installed on the surge tank. It senses absolute pressure of the surge tank and transfers the analog signal proportional to the pressure to the ECM. By using this signal, the ECM calculates the intak ...