Kia Cee'd: Troubleshooting / Evaporator Temperature Sensor Repair procedures

Kia Cee'd JD Service Manual / Heating,Ventilation, Air Conditioning / Troubleshooting / Evaporator Temperature Sensor Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the evaporator temperature sensor connector.
3.
Measure resistance between terminal “+” and “-” of the evaporator temperature sensor.

4.
Connect the evaporator temperature sensor connector.
5.
Run the engine and turn the A/C switch ON, then measure the voltage between the terminals of the harness connector.
Specification
 
Evaporator core
temperature
[°C(°F)]
Resistance [kΩ]
Voltage [V]
-20(-4)
70.04
3.50
-10(14)
43.35
2.96
0(32)
27.62
2.40
10(50)
18.07
1.88
20(68)
12.11
1.44
30(86)
8.30
1.08
40(104)
5.81
0.81
50(122)
4.15
0.61

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Disconnect the evaporator temperature sensor connector (A).

3.
Remove the evaporator temperature sensor (B) by pulling it out after rotating it 90° in a counterclockwise direction.
4.
Install in the reverse order of removal.
Evaporator Temperature Sensor Description and operation
Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by exc ...

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