Hyundai Venue: Engine Control System / 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 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.

Repair procedures

Inspection 1. Turn ignition switch OFF. 2. Disconnect IATS connector. 3. Measure resistance between IATS terminals 3 and 4...

Engine Coolant Temperature Sensor (ECTS). Specifications

Specification Temperature [°C (°F)] Resistance (kΩ) -40 (-40) 48.14 -20 (-4) 14...

Other information:

Hyundai Venue (QX) (2020-2023) Service Manual: Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the cluster fascia panel. (Refer to Body - "Cluster Fascia Panel") 3. Remove the cluster (A) from the housing after loosening the mounting screws...

Hyundai Venue (QX) (2020-2023) Service Manual: Front Stabilizer Bar. Repair procedures

Removal 1. Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. 2. Remove the front wheel and tire (A) from front hub. Tightening torque : 107...