Kia Optima: Engine Coolant Temperature Sensor (ECTS). Description and Operation
Description
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 between the IATS terminals 3 and
4.
...
Engine Coolant Temperature Sensor (ECTS). Specifications
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
48.14
-20
-4
...
See also:
Using CD Player
1. CD Button
If the CD is loaded, turns to CD mode. If no CD, it displays “No Media” for 3
seconds and returns to the previous mode.
2. 1 Button (RANDOM)
Press this button for less than 0.8 sec ...
Using a child restraint system
Rearward-facing child restraint system
Forward-facing child restraint system
For small children and babies, the use of a child seat or infant seat is required.
This child seat or infant seat s ...
Tilt Steering
To change the steering wheel angle, pull up on the lock release (located beneath
the steering column), adjust the steering wheel to the desired angle, then release
the lock-release to lock the s ...