Hyundai Creta: Air Conditioning System / Evaporator Temperature Sensor

Hyundai Creta GS 2014-2025 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / 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 Temperature Coefficient (NTC). Electrical resistivity of NTC will increase with decreasing temperature and decrease with increasing temperature.

Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the evaporator temperature sensor connector.

Measure the resistance between terminal “+” and “-” of the evaporator temperature sensor.

Specification

Evaporator core temperature [°C (°F)]	Resistance [KΩ]	Voltage [V]
-10 (14)	43.35	2.96
0 (32)	27.62	2.4
10 (50)	18.07	1.88
20 (68)	12.11	1.44
30 (86)	8.3	1.08
40 (104)	5.81	0.81

1. Sensor Ground

2. Evaporator sensor (+)

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 Evaporator Temperature Sensor can be checked.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the crash pad under cover [RH].

3.	Disconnect the evaporator temperature sensor connector (A).

4.	Remove the evaporator temperature sensor (A) by pulling it out after rotating it 90° in a counterclockwise direction.

5.	Install in the reverse order of removal.

A/C Pressure Transducer

Components and components location Components Location 1. A/C Pressure Transducer Description and operation Description The A/C Press ...

In-car Sensor

Description and operation Description The In-car air temperature sensor is built in the heater & A/C control unit. The sensor contains a thermistor which measures the temperat ...

Other information:

Hyundai Creta GS 2014-2025 Service Manual: Repair procedures
Fuel Pressure Test 1. Release the residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line") ...

Hyundai Creta GS 2014-2025 Service Manual: Engine Room Under Cover
Components and components location Components 1. Engine room side cover Repair procedures Removal and Installation Engine room under cover front pannel 1. Remove the engine room under cover (A). ...