Heating, Ventilation, and Air Conditioning

Photo Sensor Repair Procedures

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 increases with stronger light and decreases with weaker light.
    1. Auto Light Signal
    2. Auto Light Ground
    3. Photo Signal (Right)
    4. LED Power (B+)
    5. LED Ground (kΩ)
    6. Photo Signal (Left)
    7. Photo Force
    8. Auto Light Power (5 V)

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Using a flat-head screwdriver, remove the photo sensor (A) from the center of the defroster nozzle after disconnecting the connector (B).
  3. To install, reverse the removal procedure.

Test yourself

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