Hyundai Elantra: Engine Control System / Engine Coolant Temperature Sensor (ECTS) Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/Fuel System / Engine Control System / 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 whose resistance changes 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 the IATS terminals 3 and 4. 4. Check that the resistance is within the speci ...

Engine Coolant Temperature Sensor (ECTS) Specifications

Specification TemperatureResistance (k?)°C°F-40-4048.14-20-414.13 ~ 16.830325.7920682.31 ~ 2.59401041.15601400.59801760.32 ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Engine Cover Repair procedures
Removal and Installation 1. Remove the engine cover (A). • To avoid damage, remove the engine cover on room temperature. • To avoid damage of the engine cover, do not disengage both front and rear mounting point at the same time. 2. Install in the rev ...

Hyundai Elantra AD (2016-2020) Service Manual: Components and Components Location
Component Location 1. Smart key unit2. Body control module (BCM)3. Interior antenna 14. Interior antenna 25. FOB Key6. Start Stop Button (SSB)7.Door handle & Door antenna8. Bumper antenna9. Trunk antenna10. Trunk lid switch ...