Kia Cee'd: 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.

Intake Air Temperature Sensor (IATS) Repair procedures

Inspection 1. Turn the ignition switch OFF. 2. Disconnect the IATS connector. 3. Measure resistance betwe ...

Engine Coolant Temperature Sensor (ECTS) Specifications

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

Other information:

Kia Cee'd Owners Manual: Closing the tailgate
❈ The actual luggage room in the vehicle may differ from the illustration. Lower and push down the tailgate firmly. Make sure that the tailgate is securely latched. WARNING Make sure your hands, feet and other parts of your body are safely out of the way before closing the tailgate. ...

Kia Cee'd Service Manual: Troubleshooting
Troubleshooting   Symptom Possible cause Remedy Tachometer does not operate Memory2 fuse (10A) blown Check for short and replace fuse CAN line faulty Check the EMS ...