Hyundai Elantra: 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 Elantra AD (2016-2020) Service Manual: Sunroof Assembly Repair procedures
Replacement     • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. • Put on glove to protect your hands. 1. Remove the roof trim. (Refer to Roof Trim - "Roof Trim Assembly") 2. ...

Hyundai Elantra AD (2016-2020) Service Manual: Heated Steering wheel Repair procedures
Removal Heated steering wheel switch 1. Disconnect the negative (-) battery terminal. 2. Remove the floor console upper complete assembly. (Refer to Body - "Floor Console Assembly") 3. Disconnect the connector (A). 4. To install, reverse the removal procedure. Heated steering ...

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