Hyundai Elantra: Air Conditioning System / 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 rise with higher intensive light and reduce with lower intensive light.

1. Auto light signal
2. Auto light ground
3. Photo signal (RH)
4. LED power (B+)
5. LED ground (To BCM)
6. Photo signal (LH)
7. Photo power
8. Auto light power (5V)

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Using a screwdriver or remover, remove the photo sensor (A).

3.
Install in the reverse order of removal.
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 r ...

Ambient Temperature Sensor Description and Operation
Description The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower te ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Room Lamp Repair procedures
Removal [Room Lamp] 1. Disconnect the negative (-) battery terminal. 2. Using a screwdriver or remover, Separate the room lamp lens (A) from the room lamp.     • Put on gloves to prevent hand injuries. • When removing with a flat-tip screwdriver or remover, w ...

Hyundai Elantra AD (2016-2020) Owners Manual: Conventional Cluster
The trip computer is a microcomputer- controlled driver information system that displays information related to driving. Information Some driving information stored in the trip computer (for example Average Vehicle Speed) resets if the battery is disconnected. Trip modes To change the tr ...

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