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:
Anti-Lock Brake System (ABS)
WARNING - ABS Brakes
Your ABS is not a substitute for good driving judgement. You can still have an
accident. In fact, your ABS system will probably not be able to prevent an accident
in the ...
26 Brake Control Solenoid Valve(26/B_VFS). Specifications
Specifications
Direct control VFS[26/B]▷ Control type : Normal low type
Control Pressure kpa(kgf/cm², psi)
9.81~500.14(0.1~5.1, 1.42~72.54)
Curren ...
Inspection
1.
Measure terminal-to-terminal
resistance of the blower resistor.
2.
measured resistance is not within
specification, the blower resistor must be replaced. (After re ...