Kia Rio YB Quiz
Heating, Ventilation, and Air Conditioning

Photo Sensor (FATC only)

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 8Maintenance — 31Engine Mechanical System — 44Engine Electrical System — 14Emission Control System — 9Engine Control System/Fuel System — 30Clutch System — 10Manual Transmission — 10Automatic Transmission — 23Drive Shaft and Axle — 8Suspension System — 15Steering — 9Restraints — 14Brake System — 22Body (Interior and Exterior) — 115Body Electrical System — 84Heating, Ventilation, and Air Conditioning — 28
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 photovoltaic (sunlight-sensitive) diode. The solar radiation received by its light-receiving part generates an electromotive force proportional to the amount of radiation received, which is sent to the automatic temperature control module to compensate for solar radiation.

Repair Procedures

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 brighter light and decrease with lower light intensity.

    1. Auto light sensor signal
    2. Auto light sensor ground
    3. Passenger side photo sensor
    4. LED (power)    		 5. LED (signal)
    6. Driver side photo sensor
    7. Photo sensor power
    8. Auto light sensor power

Replacement

  1. Disconnect the negative (-) battery terminal.

  2. Using a flat-blade screwdriver, remove the photo sensor (A) from the center defroster nozzle after disconnecting the connector (B).

  3. Install in the reverse order of removal.

Test yourself

A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.