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

Diagnosis With GDS
1.
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 temperatu ...

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. The solar radiation received by its light r ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Stop Signal Electronic Module Schematic Diagrams
System Circuit Diagram Terminal Function TeminalDescription1Ground 2HAC/DBC Signal (Active Low)3ESS Signal (Active Low)4Stop lamp5Stop lamp switch6ECU/ SMK7ESS Signal (Active High)8Battery ...

Hyundai Sonata LF 2014-2019 Service Manual: Power Window Switch Description and Operation
Description System Diagram Driver Door Module (DDM) Driver Door Module (DDM) is part of CAN configuration, communicating with BCM, SMK, SJB, PSM, and ADM via CAN while performing wired signal I/Os with safety power windows. Operate the buttons of DDM located on the inner side of the ...

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