Kia Optima: Air Conditioning System / Ambient Temperature Sensor
Description and operation
The ambient temperature sensor is located at the front of the condenser and detects
ambient air temperature. It is a negative type thermistor; resistance will increase
with lower temperature, and decrease with higher temperature.
The sensor output will be used for discharge temperature control, temperature
regulation door control, blower motor level control, mix mode control and in-car
humidity control.

• |
If the ambient temperature is below 2.0°C (35.6°F), the A/C compressor
will stop.
The compressor will operate manually.
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|
Repair procedures
1. |
Check the resistance of the ambient temperature sensor between terminals
1 and 2 whether it changes by changing the ambient temperature.

1. Ambient Sensor (+)
|
2. Sensor ground
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Specification
Ambient temperature [°C(°F)]
|
Resistance between terminal 1 and 2 (kΩ)
|
-30 (-22)
|
480.41
|
-20 (-4)
|
271.21
|
-10 (14)
|
158.18
|
0 (32)
|
95.10
|
10 (50)
|
58.50
|
20 (68)
|
37.32
|
30 (86)
|
24.26
|
40 (104)
|
16.13
|
50 (122)
|
10.95
|
|
1. |
Disconnect the negative (-) battery terminal.
|
2. |
Remove the front bumper assembly.
(Refer to Body - "Front Bumper Assembly")
|
3. |
Separate the connector (A) and remove the ambient temperature sensor
(B).

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4. |
To install, reverse the removal procedure.
•
|
Make sure connectors are connected properly.
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Description and operation
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Description and operation
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The auto defogging sensor is installed on the front window glass. The sensor
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Other information:
Restraint of pregnant women
Pregnant women should wear lap/shoulder belt assemblies whenever possible according
to specific recommendations by their doctors. The lap portion of the belt should
be worn AS SECURELY AND LOW AS POSSIBLE.
WARNING - Pregnant women
Pregnant women must never place th ...
Schematic diagrams
Circuit Diagram
Repair procedures
Removal
Parking Distance Warning-Forward
(PDW-F) Sensor
1.
Remove the front bumper assembly.
(Refer to Body - "Front Bumper Assembly")
2.
Disconnect the connect ...