Hyundai Sonata: 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:

Hyundai Sonata LF 2014-2019 Service Manual: Radiator Grill Components and Components Location
Component Location 1. Radiator grill ...

Hyundai Sonata LF 2014-2019 Service Manual: TPMS Receiver Repair procedures
Replacement 1. Disconnect the negative (-) battery cable. 2. Remove the glove box. (Refer to Body - "Crash Pad") 3. Remove faulty part and fit bracket assembly to new part. 4. Secure new part to vehicle and fit connector. 5. Re-connect battery and turn Ignition on. 6. After ...

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