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Kia Sorento: Engine Coolant temperature sensor (ECTS) On Vehicle Inspection - Engine Control System - Engine Control / Fuel SystemKia Sorento: Engine Coolant temperature sensor (ECTS) On Vehicle Inspection

Kia Sorento (MQ4, 2021-2026) Service Manual / Engine Control / Fuel System / Engine Control System / Engine Coolant temperature sensor (ECTS) On Vehicle Inspection

On Vehicle Inspection
1.
The engine control system can be more quickly diagnosed for problems with the KDS. (Refer to "DTC guide")
(1)
Self diagnosis : Checking failure and Diagnosis Trouble Code (DTC)
(2)
Data analysis : Checking the system input/output data state
(3)
Actuation test : Checking the system operation condition
(4)
Software Management : Controlling other features including system option setting and Zero-Adjustment
Inspection Components
1.
Remove the Engine Coolant Temperature Sensor (ECTS).
(Refer to Engine Coolant Temperature Sensor - "Removal")
2.
After immersing the thermistor of the sensor into engine coolant, measure resistance between ECTS signal terminal and ground terminal.
3.
Compare the measured resistance with the specification to below.
Temperature
 Resistance (kΩ)
°C
 °F
-40
 -40
 41.74 - 54.54
-30
 -22
 23.54 - 29.94
-20
 -4
 14.13 - 16.83
-10
 14
 8.39 - 10.22
0
 32
 5.28 - 6.29
10
 50
 3.42 - 4.00
20
 68
 2.31 - 2.59
30
 86
 1.55 - 1.86
40
 104
 1.08 - 1.21
50
 122
 0.77 - 0.85
60
 140
 0.56 - 0.61
70
 158
 0.41 - 0.44
80
 176
 0.31 - 0.33
90
 194
 0.23 - 0.25
100
 212
 0.18 - 0.19
110
 230
 0.145 - 0.149
120
 248
 0.113 - 0.118
130
 266
 0.090 - 0.095
140
 284
 0.073 - 0.077
150
 302
 0.059 - 0.063

Engine Coolant temperature sensor (ECTS) Description and Operation
Description • The Engine Coolant Temperature Sensor (ECTS) uses a thermistor whose resistance changes with the temperatur...
Engine Coolant temperature sensor (ECTS) Removal and Installation
Removal Engine Coolant Temperature Sensor (ECTS) - ITM 1. Remove the air cleaner assembly. (Refer to Engine Mec...
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