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 Owners Manual: Theft-alarm system
This system helps to protect your vehicle and valuables. The horn will sound and the hazard warning lights will blink continuously if any of the following occurs: - A door is opened without using the remote key or smart key. - The trunk is opened without using the remote key or smart key. - The eng ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Inspection [System Inspection] 1. Disconnect the vapor hose from the intake manifold and connect a vacuum pump to the nipple on the intake manifold. · At Cold Engine [Engine Coolant Temperature < 60°C(140°F)] EngineOperatingConditionAppliedVacuumResultIdleMin. 20 inHg (Min. 0.7 kgf/ ...