Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Ambient Sensor

Hyundai Santa Cruz: Air Conditioning System / Ambient Sensor

- Description 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 1.0°C (33.8°F), the A/C compressor will stop.- The compressor will operate manually.

- Inspection

1.Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature.Specification

Ambient temperature [°C (°F)]	Resistance between terminals 1 and 2 (kΩ ± 3%)	Voltage (V)
-10(14)	158.18	4.20
0(32)	95.096	3.80
10(50)	58.799	3.31
20(68)	37.315	2.77

1. Ambient Sensor (+)
2. Sensor ground

- Replacement

1.Disconnect the negative (-) battery terminal.

2.Remove the front bumper assembly.(Refer to Body - "Front Bumper Assembly")

3.Disconnect the connector (A) and then remove the ambient temperature sensor (B).

4.Install in the reverse order of removal.

Photo Sensor

- Description 1.The photo sensor is located at the center of the defrost nozzles. 2.The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar radiation received by its ...

Auto defoging sensor

- Description The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control ...

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