Kia Carens: Engine Control System / Engine Coolant Temperature Sensor (ECTS) Description and operation
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.

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the IATS connector.
3.
Measure resistance betwe ...
Specification
Temperature
Resistance (kΩ)
°C
°F
-40
-40
48.14
-20 ...
Other information:
You should always attach chains between your vehicle and your trailer. Cross
the safety chains under the tongue of the trailer so that the tongue will not drop
to the road if it becomes separated from the hitch. Instructions about safety chains
may be provided by the hitch manufacturer or by the ...
Removal
Front/Rear SPAS Sensor
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front/ rear bumper cover.
(Refer to Body - "Front Bumper Cover")
(Refer to Body - "Rear Bumper Cover" ...