Hyundai Palisade: Air conditioning System / Photo Sensor

Hyundai Palisade (LX2) 2020-2024 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.
Repair procedures
Inspection
1.
Emit intensive light toward the photo sensor using a lamp, and check the output voltage change.
2.
The voltage will rise with higher intensive light and reduce with lower intensive light.

Hyundai Palisade. Repair procedures

[Dual photo]
1. Auto light ground
2. Auto light power (+5V)
3. Auto light signal (OUT)
4. Photo sensor_DRV (OUT)
5. Photo sensor power (+5V)
6. Photo sensor_Pass (OUT)
[Single photo]
1. Auto light ground
2. Auto light power (+5V)
3. Auto light signal (OUT)
4. Photo sensor signal (OUT)
5. Photo sensor power (+5V)
6. -

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Using a remover and remove the center speaker grill (A).

Hyundai Palisade. Repair procedures

3.
Separate the photo sensor connector (A) and security sensor connector (B).

Hyundai Palisade. Repair procedures

4.
Remove the photo sensor (A).

Hyundai Palisade. Repair procedures

5.
Install in the reverse order of removal.
Hyundai Palisade. Repair procedures   
Make sure the hood latch release cable is connected properly.
Replace any damaged clips (or retainers or fasteners).

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