Hyundai Sonata: Intake Air Temperature Sensor (IATS) Description and Operation - Engine Control System - Engine Control / Fuel SystemHyundai 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. Specification: Refer to "Specification" Removal 1. Tur ...

    Intake Air Temperature Sensor (IATS) Specifications
    Specification TemperatureResistance (k?)°C°F-40-4040.93 ~ 48.35-20-413.89 ~ 16.030325.38 ~ 6.0910503.48 ~ 3.9020682.31 ~ 2.57401041.08 ~ 1.21501221.56 ~ 1.74601400.54 ~ 0.62801760.29 ~ 0.34 ...

    See also:

    Relay Box (Engine Compartment). Schematic Diagrams
    Circuit Diagram ...

    Lumber Support Units Components and Components Location
    Component Location [Mechanical Lumbar Support Assembly] ...

    Rear Door Module Components and Components Location
    Component Location 1. Rear door module ...