Hyundai Tucson: Air Conditioning System / Ambient Sensor Repair procedures

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 (kx)
-30(-22)
479.22
-20(-4)
271.45
-10(14)
158.32
0 (32)
95.10
10 (50)
58.76
20 (68)
37.30
30(86)
24.27
40(104)
16.17
50(122)
11.00

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.
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Disconnect the connector and then remove the ambient temperature sensor (A).

3.
Install in the reverse order of removal.
Ambient Sensor Description and Operation
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