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: Front Pillar Trim Repair procedures
Replacement     • Put on gloves to protect your hands.     • When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage. • Us ...

Hyundai Sonata LF 2014-2019 Service Manual: Memory power seat unit Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the driver seat assembly. (Refer to Body - "Front Seat Assembly") 3. Loosening the IMS unit mounting screws. 4. Disconnect the IMS module connectors (B) and then remove the IMS unit (A). Installation 1. Install ...

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