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

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Engine Control/Fuel System / Engine Control System / Engine Coolant Temperature Sensor (ECTS) Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the ECTS connector.

3.	Remove the ECTS.

4.	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 (k?)
°C	°F	Resistance (k?)
-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.	Disconnect the engine coolant temperature sensor connector (A).

Remove the fixing 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. In this case, use it after inspecting.

•	Apply the engine coolant to the O-ring.

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

1.	Install in the reverse order of removal.

Engine Coolant Temperature Sensor (ECTS) Schematic Diagrams

Circuit Diagram ...

Crankshaft Position Sensor (CKPS) Description and Operation

Description Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one of the most important sensors of the engine control system. If there is no CKPS signal input, the engine may stop ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Components and Components Location

Component(1) Component(2) 1. Steering column shaft2. Lighting switch3. Wiper and washer switch4. Screw5. Clock spring6. Steering angle sensor ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Rear Seat Components and Components Location

Components - 1 [ General ] 1. Headrest2. Headrest guide3. Rear seat back cover4.Rear seat back frame assembly5. Rear back armrest board6. Rear seat cushion cover7. Rear back armrest8. Rear seat cushion frame assembly Components - 2 [ Seat folding ] 1. Headrest2. Headrest guide3. Rear side cover4. Rear ...