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: Front Door Belt Outside Weatherstrip Repair procedures
Replacement 1. Pull down the front door window glass to the lowest level by pressing the power window glass switch. 2. After loosening the mounting screws, remove the front door belt outside weatherstrip (A). Tightening torque : 1.0 ~ 2.0 N.m (0.1 ~ 0.2 kgf.m, 0.7 ~ 1.4 lb-ft) 3. T ...

Hyundai Elantra AD (2016-2020) Service Manual: General Service Information
General Information Protection of the Vehicle Always be sure to cover fenders, seats, and floor areas prior to beginning work.     • The support rod must be inserted into the hole near the edge of the hood whenever you inspect the engine compartment to prevent the hoo ...

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