Kia Optima: Inspection - Ambient Sensor. Repair procedures - Air Conditioning System - Heating,Ventilation, Air Conditioning - Kia Optima TF 2011-2026 Service ManualKia Optima: Inspection

1. Ignition "OFF"
2. Disconnect ambient temperature sensor.
3. Check the resistance of ambient temperature sensor between terminals 1 and 2 whether it is changed by changing of the ambient temperature.

1. Sensor Ground
2. Ambient Sensor Signal

Specification

Ambient temperature
[°C(°F)]
Resistance between terminals 1and 2 (kΩ)
-30(-22)
480.41
-20(-4)
271.21
-10(14)
158.18
0 (32)
95.10
10 (50)
58.80
20 (68)
37.32
30(86)
23.76
40(104)
16.13
50(122)
10.95

4. If the measured resistance is not specification, substitute with a known-good ambient temperature sensor and check for proper operation.
5. If the problem is corrected, replace the ambient temperature sensor.

Ambient Sensor. Repair procedures
...

Replacement
1. Disconnect the negative (-) battery terminal. 2. Loosen the mounting bolts and then remove the under cover (A). 3. Disconnect the connector ...

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