Hyundai Sonata: 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.
...
Intake Air Temperature Sensor (IATS). Specifications
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
40.93 ~ 48.35
-20
...
See also:
Air conditioning
Push the A/C button to turn the air conditioning system on (indicator light will
illuminate).
Push the button again to turn the air conditioning system off. ...
Interior light bulb replacement
1. Using a flat-blade screwdriver, gently pry the lens from the interior light
housing.
2. Remove the bulb by pulling it straight out.
WARNING
Prior to working on the Interior Lights, ensure th ...
Troubleshooting
Troubleshooting
Problem Symptoms Table
Use the table below to help you find the cause of the problem. The numbers
indicate the priority of the like cause of the problem. Check each ...
