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). SpecificationsInspection
1.
Disconnect the negative(-) battery
terminal.
2.
Remove the lighting switch of
the multi-function switch. (Refer to the multi-function switch)
3.
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Removal
1.
Turn the ignition switch OFF and disconnect the battery
negative (-) cable.
2.
Disconnect the purge control solenoid valve connector
(A).
3. ...
Map lamp
Push the lens to turn the map lamp on or off. This light produces a spot beam
for convenient use as a map lamp at night or as a personal lamp for the driver and
the front passenger.
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