Kia Forte: Air Conditioning System / Evaporator Temperature Sensor
Description and operation
The evaporator temperature sensor will detect the evaporator core temperature
and interrupt compressor relay power in order to prevent evaporator from freezing
by excessive cooling. The evaporator temperature sensor has the Negative Temperature
Coefficient (NTC). Electrical resistivity of NTC will increase with decreasing temperature
and decrease with increasing temperature.
Repair procedures
1. |
Turn the ignition switch OFF.
|
2. |
Disconnect the evaporator temperature sensor connector.
|
3. |
Measure the resistance between terminal "+" and "-" of the evaporator
temperature sensor.
![](images/evaporator_temperature_sensor-883/392/aqjf206b_n.gif)
Specification
Evaporator core temperature
[°C (°F)]
|
Resistance [KΩ]
|
Voltage [V]
|
-10 (14)
|
43.35
|
2.96
|
0 (32)
|
27.62
|
2.4
|
10 (50)
|
18.07
|
1.88
|
20 (68)
|
12.11
|
1.44
|
30 (86)
|
8.30
|
1.08
|
40 (104)
|
5.81
|
0.81
|
![](images/evaporator_temperature_sensor-883/392/sdhha3016d_n.gif)
1. Sensor Ground
|
2. Evaporator sensor
(+)
|
|
1. |
Disconnect the negative (-) battery terminal.
|
2. |
Remove the evaporator core.
(Refer to Air Conditioning - "Evaporator Core")
|
3. |
Remove the evaporator temperature sensor (A) from the evaporator core.
![](images/evaporator_temperature_sensor-883/392/sbdha9036d.gif)
|
4. |
To install, reverse the removal procedure.
|
Description and operation
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Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
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