Kia Sportage: Engine Control System / Engine Coolant Temperature Sensor (ECTS) Repair procedures

Kia Sportage QL (2015-2025) Service Manual / Engine Control / Fuel System / Engine Control System / Engine Coolant Temperature Sensor (ECTS) Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Remove the ECTS (Refer to "Removal").

3.	After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECTS terminals 3 and 4.

Check that the resistance is within the specification.

Temperature		Resistance (kΩ)
°C	°F	Resistance (kΩ)
-40	-40	48.14
-20	-4	14.13 - 16.83
0	32	5.79
20	68	2.31 - 2.59
40	104	1.15
60	140	0.59
80	176	0.32

Removal

1.	Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.	Remove the air cleaner. (Refer to Engine Mechanical System - "Air Cleaner")

3.	Disconnect the engine coolant temperature sensor connector (A).

Remove the spring clip (A), and then pull the sensor from the water temperature control assembly.

Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.

Installation

•	Install the component with the specified torques.

•	Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.

•	Apply the engine coolant to the O-ring.

•	Insert the sensor in the installation hole and be careful not to damage.

1.	Install in the reverse order of removal.

2.	Supplement the engine coolant. (Refer to Engine Mechanical System - “Coolant”)

Engine Coolant Temperature Sensor (ECTS) Schematic diagrams

Circuit Diagram Harness Connector ...

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