Hyundai Santa Fe (TM): Air conditioning System / Photo Sensor. Description and operation
The photo sensor is located at the center of the defrost nozzles.
The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The
solar radiation received by its light receiving portion, generates an electromotive
force in proportion to the amount of radiation received which is transferred
to the automatic temperature control module so that the solar radiation compensation
will be performed.
Description
The In-car air temperature sensor is built in the heater & A/C control unit.
The sensor consists of a thermistor that measures the inside temperature.
Inspection
1.
Emit intensive light toward the photo sensor using a lamp, and check
the output voltage change.
2.