Hyundai i20 Quiz
Heating, Ventilation and Air Conditioning

PHOTO SENSOR Repair Procedures

In this manual: Heating, Ventilation and Air Conditioning
General Information — 17Engine Mechanical System — 79Engine Electrical System — 50Emission Control System — 22Engine/Fuel Control System — 107Clutch System — 27MANUAL TRANSMISSION SYSTEM — 21Drive Shaft and Axle — 18Suspension System — 29Steering System — 21Restraint — 41Braking System — 53Body Work (Interior and Exterior) — 190Body Electrical System — 181Heating, Ventilation and Air Conditioning — 58
7steps
~42min
2/5difficulty
Done 0 of 7

Inspection

  1. Start.
  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 if the light is intense and decrease if the light is dim.
    1. Automatic light signal
    2. Auto light ground
    3. Photo signal (D)
    4. Power indicator (B+)    		 5. LED ground (to BCM)
    6. Photo signal (G)
    7. Photo flow
    8. Automatic lighting power (5 V)

REPLACEMENT

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

Test yourself

A quick Hyundai i20 quiz: every answer comes with an explanation and a link to the manual page.