WARNING: This page is about a different car, the 2018 Kia Forte5 and 2018 Kia Forte. However, it is still accessible from the selected car via links, so may be relevant.
Turn the Ignition Switch ON.
Blow air with changing temperature into the In-Car Sensor air inlet. Measure the sensor resistance between 1 and 2 terminals.
Fig 1: In-Car Sensor Air Inlet Connector Terminals