Hyundai Elantra AD Quiz
Heating, Ventilation, and Air Conditioning

Photo Sensor Repair Procedures

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 9Engine Mechanical System — 84Engine Electrical System — 60Emission Control System — 24Engine Control System/Fuel System — 90Automatic Transmission — 92Drive Shaft and Axle — 20Suspension System — 31Steering — 20Restraints — 50Brake System — 63Body (Interior and Exterior) — 214Body Electrical System — 221Heating, Ventilation, and Air Conditioning — 71
7steps
~42min
2/5difficulty
Done 0 of 7

Inspection

  1. Turn the ignition on.
  2. Connect the GDS.
  3. Direct intense light onto the photo sensor using a lamp, and check the change in output voltage.
  4. The voltage will increase with more intense light and decrease with less intense light.
    1. Auto Light Signal
    2. Auto Light Ground
    3. Photo Signal (Right)
    4. LED Power (B+)    		 5. LED Ground (to BCM)
    6. Photo Signal (Left)
    7. Photo Force
    8. Auto Light Power (5 V)

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Using a screwdriver or puller, remove the photo sensor (A).
  3. Install in the reverse order of removal.

Test yourself

A quick Hyundai Elantra AD quiz: every answer comes with an explanation and a link to the manual page.