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. ...

    Intake Air Temperature Sensor (IATS). Specifications
    Specification Temperature Resistance (kΩ) °C °F -40 -40 40.93 ~ 48.35 -20 ...

    See also:

    Flex Steer. Schematic Diagrams
    Schematic Diagrams ...

    Body Control Module (BCM). Description and Operation
    Description Body control module receives various input switch signals controlling time and alarm functions for the intermittent wiper timer, washer timer, rear defogger timer, seat belts ...

    Repair procedures - Revised
    Fuel Pressure Test 1. Release the residual pressure in fuel line (Refer to “Release Residual Pressure in Fuel Line” in this group). ...