Hyundai Creta: Air Conditioning System / Ambient Temperature Sensor

Hyundai Creta GS 2014-2025 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Ambient Temperature Sensor

Description and operation

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.

Repair procedures

Inspection

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

Specification

Ambient temperature [°C (°F)]	Resistance between terminal 1 and 2 (KΩ)
-30 (-22)	480.41
-20 (-4)	271.21
-10 (14)	158.20
0 (32)	95.10
10 (50)	58.80
20 (68)	37.32
30 (86)	24.26
40 (104)	16.13
50 (122)	10.95

Diagnosis With GDS

The heating, ventilation and air conditioning can be quickly diagnosed failed parts with vehicle diagnostic system (GDS).

※ The diagnostic system (GDS) provides the following information.

(1) Self diagnosis : Checking the failure code (DTC) and display.

(2) Current data : Checking the system input/output data state.

(3) Actuation test : Checking the system operation condition.

(4) Additional function : Other controlling such as he system option and zero point adjustment.

2.	Select the 'Car model' and the system to be checked in order to check the vehicle with the tester.

3.	Select the 'Current data' menu to search the current state of the input/output data. The input/output data for the sensors corresponding to the Ambient Temperature Sensor can be checked.

Replacement

1.	Disconnect the negative (-) battery terminal.

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

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

4.	Install in the reverse order of removal.

Photo Sensor

Description and operation Description The photo sensor is located at the center of the defrost nozzles. The photo sensor contains a photovoltaic (sensitive to sunlight) diode. Th ...

Auto Defogging Sensor

Description and operation 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 d ...

Other information:

Hyundai Creta GS 2014-2025 Service Manual: Evaporator Temperature Sensor
Description and operation Description 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 Temper ...

Hyundai Creta GS 2014-2025 Owners Manual: Fuses
A vehicle’s electrical system is protected from electrical overload damage by fuses. This vehicle has 2 fuse panels, one located in the driver’s side panel bolster, the other in the engine compartment near the battery. If any of your vehicle’s lights, accessories, or controls d ...