Kia Optima: Intake Air Temperature Sensor (IATS). Description and OperationTo 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.

Installation
Intake Air Temperature Sensor (IATS). SpecificationsSeat Heater (Non-Air Ventilation). Components and Components Location
Component Location
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Front Seat. Components and Components Location
Components
1. Headrest
2. Headrest guide
3. Front seat back cover
4. Front seat back warmer
5. Front seat back frame
6. Front seat duct
7. Front seat back boa ...
Winter Driving
We recommend that you carry emergency equipment, including tire chains,
a window scraper, windshield de-icer, a bag of sand or salt, flares, a small
shovel and jumper cables.
Make sure you ...