Hyundai Sonata LF: Air Conditioning System / In-car Sensor Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / In-car Sensor Repair procedures

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 In-car Sensor can be checked.

In-car Sensor Description and Operation

Description The sensor contains a thermistor which measures the temperature of the inside. The signal decided by the resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit and according to this signal the control unit regulates incar temperature to intended value...

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...

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Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures