Hyundai Veloster: Engine Coolant Temperature Sensor (ECTS). Description and Operation

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:

Gauges
Speedometer The speedometer indicates the speed of the vehicle. The speedometer is calibrated in miles per hour and/or kilometers per hour. Tachometer The tachometer indicates the approximate ...

Specifications
Specification Item Resistance (Ω) Driver Airbag (DAB) 1.7 ~ 2.3 Passenger Airbag (PAB) 1.7 ~ 2.3 ...

Specifications
Specifications Items Specifications Rated voltage DC +5V Load Max. 1.5mA (When head lamp lighting) I ...