Hyundai Kona: 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 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.

Boost Pressure Sensor (BPS) Repair procedures

Inspection 1. Connect a GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the BPS at idle and IG ON. ...

Engine Coolant Temperature Sensor (ECTS) Specifications

Specification Temperature Resistance (kΩ) °C °F -40 -40 48.14 -20 ...

Other information:

Hyundai Kona (OS) 2018-2022 Owners Manual: Auto start
To restart the engine in the auto stop mode Manual transmission vehicle Depress the clutch pedal with the gear in N (Neutral). The auto stop indicator () goes OFF on the instrument cluster, when the engine is restarted. Dual clutch transmission vehicle Release the brake pedal. When Auto Hold ...

Hyundai Kona (OS) 2018-2022 Owners Manual: Brake operation
In an urgent situation, the braking system enters into the ready status for prompt reaction against the driver's depressing the brake pedal. The FCA provides additional braking power for optimum braking performance, when the driver depresses the brake pedal. The braking control is automatica ...