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:
Room lamp
Type A
Type B
Type B
DOOR : In the DOOR position, the map lamp and the room lamp come on when
any door is opened regardless of the ignition switch position. When doors are
unlocked by ...
Removal
•
Take care not to scratch
the center fascia panel and related parts.
•
Eject all the ...
Inspection
1.
The rear glass defogger switch
inputs can be checked using the GDS.
2.
To check the input value of rear
glass defogger switch, select option "Body Control Mod ...