Hyundai Elantra: Air Conditioning System / Photo Sensor Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / 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 receiving portion, generates an electromotive force in proportion to the amount of radiation received which is transferred to the automatic temperature control module so that the solar radiation compensation will be performed.

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 follow ...

Photo Sensor Repair procedures

Inspection 1. Turn the ignition switch ON. 2. Connect the GDS. 3. Emit intensive light toward the photo sensor using a lamp, and check the output voltage change. 4. The voltage will ri ...

Other information:

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Hyundai Elantra AD (2016-2020) Service Manual: Heater & A/C Control Unit (Manual) Components and Components Location
Components ConnectorPin NOFunctionConnectorPin NOFunctionA1LowB18ILL- (RHEO)2Common19Sensor ground3Ground20Ground4Middle Low21Battery (+)5Middle High22ISG DC6High23ISG B+B1IGN224ILL+ (TAIL)2PAB IGN125Sensor REF (+5V)3HTD (Rear defog indicator)26EVAP sensor (+)4Detent Out (-)27AMB sensor (+)5PTC ...