Rain Sensing Wiper System; System Diagram - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

RAIN SENSING WIPER SYSTEM

Overview
Rain sensor wiper system is a wiper operation system that sets wiper operation time to fast or slow automatically
without driver's operation by controlling wiper motor drive when the rain sensing unit on the inner upper central wind-
shield senses rain.

System Diagram

Rain
Principle of Rain Sensor
(All emitted radio wave reflect and return)
LED
Rain sensing unit
(Sunny)
1. Rain sensing unit detects amount of rains through
LED and photodiode.
2. When infrared rays emitted from LED are reflected
against rains on the windshield surface, photodiode
detects the amount of rains.
SWITCHES
REXTON SM - 2004.4
Multi-function switch
(ON/OFF and wiper mode control)
Rain sensing unit
(The sensor senses rain – Determines
optimum wiper motor speed according to
sensing rain)
Windshield
Photodiode
(Radio wave loss occurs when contact rains)
LED Photodiode
Rain sensing unit
(Raining)
3. Rain sensing unit has glass transmitting rate
compensation circuit so it can detect rains constantly
regardless of transmitting rays.
4. Windshield transmitting rate can be measured at the
central point on the glass between LED and
photodiode.
9D-31
Wiper motor
Y220_09D189
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN