Kia Rio: 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.

Temperature
Resistance (kΩ)
°C
°F
-40
-40
48.14
-20
-4
14.13 ~ 16.83
0
32
...
See also:
Emission control system
The emission control system of your vehicle is covered by a written limited warranty.
Please see the warranty information contained in the Warranty & Maintenance booklet
in your vehicle.
Your ...
Description
The GDI injector is similar to a standard injector, but sprays fuel at
a much higher pressure directly into the combustion chamber and has a swirl
disc to get the fuel swirling as it exits th ...
On-vehicle Inspection
Inspect ignition coil assembly and
Perform spark test
1.
Check for DTCs.
...