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) 2018-2026 Service Manual: Schematic diagrams
Operation Condition for the ISG function Operation Condition for the ISG function After every engine start, the function is automatically active and on stand-by. The ISG OFF switch can be used to deactivate the function manually until the next terminal change. Pressing ...

Hyundai Kona (OS) 2018-2026 Service Manual: Components and components location
Components (1) [General Type] 1. Sunvisor 2. Assist handle 3. Assist handle bracket 4. Roof trim Components (2) [Sunroof Type] 1. Sunvisor 2. Assist handle 3. Assist handle bracket ...