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.
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Intake Air Temperature Sensor (IATS). Specifications
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
40.93 ~ 48.35
-20
...
See also:
Roof Trim. Components and Components Location
Components
1. Roof trim
2. Sunvisor
3. Retainer
4. Assist handle bracket
...
Troubleshooting
Troubleshooting
Symptom
Suspect area
Engine will not start or struggle to start
Vapor hose damaged or disconnected
Engine strugg ...
Injector. Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the injector connector.
3.
Measure resistance betwee ...
