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:
Rear Seat Belt. Repair procedures
Replacement
Rear Seat Belt Replacement
•
When installing the belt,
make sure not to damage the retractor.
...
Inspection
1.
Check each part for cracks, damage
or wear, and replace the coolant pump assembly if necessary.
2.
Check the bearing for damage,
abnormal noise and sluggish rotat ...
Disc Brake Wear Indicators
Your vehicle has disc brakes.
When your front brake pads are worn and it’s time for new pads, you will hear
a high-pitched warning sound from your front brakes. You may hear this sound come
and g ...