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:

    Seat Belt Buckle Switch (BS). Description and Operation
    Description The SRSCM shall monitor the status of the driver and front passenger seat belt buckle. The SRSCM provides one pin each for the driver and front passenger seat belt buckle status ...

    Power window lock button
    The driver can disable the power window switches on a front and rear passenger door by pressing the power window lock button located on the driver’s door to the LOCK position (pressed). ...

    Relay Box (Passenger Compartment) Components and Components Location
    Component Location [Interior Junction Block] ...