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) (2020-2022) Service Manual: Repair procedures

Removal Brake Hose [Front] 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Disconnect the brake fluid level sensor connector (A). 3...

Hyundai Venue (QX) (2020-2022) Owners Manual: Rear Seat Belt – Passenger’s 3-point system with convertible locking retractor

This type of seat belt combines the features of both an emergency locking retractor seat belt and an automatic locking retractor seat belt. Convertible retractor type seat belts are installed in the rear seat positions to help accommodate the installation of child restraint systems...