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

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 ...
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: General Service Information
General Information
Protection Of The Vehicle
Always be sure to cover fenders, seats, and floor areas before starting work.
The support rod must be inserted into the hole near the edge
of the hood whenever you inspect the engine compartment to prevent the
hood from fal ...
Hyundai Sonata LF 2014-2019 Owners Manual: Smart Cruise Control system
➀ Cruise Indicator
➁ Set Speed
➂ Vehicle-to-Vehicle Distance
The Smart Cruise Control System allows you to program the vehicle to maintain
constant speed and distance detecting the vehicle ahead without depressing the accelerator/
brake pedal.
WARNING
For your safety, please read the owner' ...