Hyundai Sonata: Engine Coolant Temperature Sensor (ECTS). Description and Operation - Engine Control System - Engine Control/Fuel SystemHyundai Sonata: Engine Coolant Temperature Sensor (ECTS). Description and Operation

Description

Engine Coolant Temperature Sensor (ECTS) is located in the engine coolant passage of the cylinder head for detecting the engine coolant temperature. The ECTS uses a thermistor that changes resistance with the temperature.
The electrical resistance of the ECTS decreases as the temperature increases, and increases as the temperature decreases. The reference +5V is supplied to the ECTS via a resistor in the ECM. That is, the resistor in the ECM and the thermistor in the ECTS are connected in series. When the resistance value of the thermistor in the ECTS changes according to the engine coolant temperature, the output voltage also changes.
During cold engine operation, the ECM increases the fuel injection duration and controls the ignition timing using the information of engine coolant temperature to avoid engine stalling and improve drivability.


    Intake Air Temperature Sensor (IATS). Repair procedures
    Inspection 1. Turn the ignition switch OFF. 2. Disconnect the IATS connector. 3. Measure resistance between th ...

    Engine Coolant Temperature Sensor (ECTS). Specifications
    Specification Temperature Resistance (kΩ) °C °F -40 -40 48.14 -20 -4 ...

    See also:

    Limitation of Active ECO operation
    If the following conditions occur while Active ECO is operating, the system operation is limited even though there is no change in the ECO indicator. When the coolant temperature is low: The sys ...

    Multimedia jack. Schematic Diagrams
    Circuit Diagram ...

    Driving off-road
    Drive carefully off-road because your vehicle may be damaged by rocks or roots of trees. Become familiar with the off-road conditions where you are going to drive before you begin driving. ...