| SONATA(YF) >2013 > G 2.4 GDI > Heating,Ventilation, Air Conditioning > Air Conditioning System > Photo Sensor>Repair procedures |

Inspection

1. | Ignition "ON"

2. | Using the scan tool.

3. | Emit intensive light toward 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 GND 3. Photo Signal (RH) 4. Led power (BAT) | 5. Led GND (To BCM) 6. Photo Signal 7. Photo Power (SW) 8. Auto Light Power (5V)

Replacement

1. | Disconnect the negative (-) battery terminal.

2. | With the (-) driver, remove the photo sensor (B) from the center of defrost nozzle.

3. | Install in the reverse order of removal.