Hyundai Elantra: Air Conditioning System / Photo Sensor Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Heating, Ventilation and Air Conditioning / 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.

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: Intake Air Temperature Sensor (IATS) Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the IATS connector. 3. Measure resistance between the IATS terminals 3 and 4. 4. Check that the resistance is within the specification. Specification : Refer to "Specification" ...

Hyundai Elantra AD (2016-2020) Owners Manual: Warning Light and Message
Keep hands on steering wheel If the driver takes their hands off the steering wheel for several seconds while the LKA system is activated, the system will warn the driver. Information If the steering wheel is held very lightly, the message may still appear because the LKA system may not rec ...