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2. RAIN SENSING SYSTEM
In the rain sensing wiper operation system, the rain sensing unit only sends the information about the
amount of rain drops to the STICS, and it does not operate the wiper directly. The wiper and washer are
controlled by the STICS according to the driver's choice.
Rain sensing unit
This sensor emits infrared rays through LED
and then detects the amount of rain drops
by receiving the rays reflected off the
sensing section (rain sensor mounting
section on the windshield) with photodiode.
In the vehicle for EU market, the auto light sensor is not available.
Multifunction wiper switch
AUTO and sensitivity control
AUTO: Wiper operates automatically by rain
sensor
FAST <-------> SLOW:
Auto delay/auto speed control.
A position that can control the sensitivity for
the amount of rains on the windshield and
transmit the wiping request signal
accordingly.
Rain sensor emitter lens
Auto light sensor
sensing portion
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