Hyundai Tucson Quiz
Heating, Ventilation and Air Conditioning

PHOTO SENSOR

In this manual: Heating, Ventilation and Air Conditioning
General Information — 17Engine Mechanical System — 51Engine Electrical System — 26Emission Control System — 23Engine/Fuel Control System — 44Clutch System — 12MANUAL TRANSMISSION SYSTEM — 12AUTOMATIC TRANSMISSION SYSTEM — 42Four-Wheel Drive (4WD) System — 14Drive Shaft and Axle — 22Suspension System — 30Steering System — 16Restraint — 21Braking System — 47Body Work (Interior and Exterior) — 145Body Electrical System — 162Heating, Ventilation and Air Conditioning — 39
7steps
~42min
2/5difficulty
Done 0 of 7

Description and Operation

Description

The photo sensor is located in the center of the defroster nozzles. The photo sensor contains a photoelectric diode (sensitive to sunlight). The sun's rays captured by the photo sensor receiver generate an electromotive force proportional to the amount of radiation received, which is transmitted to the automatic temperature control module so that solar radiation compensation is performed.

Repair Procedures

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 Tucson quiz: every answer comes with an explanation and a link to the manual page.