7810-01 07-3
1. OVERVIEW
The wiper and washer system are controlled by STICS according to driver's wiper switch
operation. And the detection of rain drops by rain sensor is transmitted to STICS as the signal for
wiper system control.
(saem as KYRON)
The characteristics of the wiper and washer system including basic functions of manual wiper are
as follows.
1) Wiper Function Coupled Auto Washer
Pressing the AUTO washer switch with the
ignition key OFF and INT AUTO switch OFF
Auto
sprays the washer fluid for 2 sec. and
washer
operates the wiper 4 times and then
operation
immediately sprays the washer fluid for 1.5
switch
sec. and operates the wiper 3 times.
(press)
2) Integrated Auto Light Sensor in Rain Sensor Unit
The rain sensor unit is installed on the best
location to detect the rain drops and the
lighting intensity. And an auto light sensor is
Rain sensor
newly integrated into the rain sensor unit for
emitter lens
more precise measurements. To control the
system, the sensed values of rain sensor and
auto light sensor are sent to pin no. 63 in
Auto light
STICS unit.
sensor
photodiode
07-4
3) Fluidic Washer Nozzle
Fluidic Washer Nozzle is applied to the front washer spray system in this vehicle. The inside of
nozzle is designed to utilize the fluidic movement.
This is a shape of the inside of nozzle. It is designed to change the spraying direction
continuously according to the spraying time (fan-shape). The figure below shows the changes of
spraying direction according to the spraying time.
Washer fluid outlet
Passage
Counter-current
Spray passage
Whirlwind
Washer fluid inlet
It is designed to be changed spraying direction using the whirlwind and backflow generated in
nozzle.
7810-01 07-5
2. CONFIGURATION (INCLUDING RAIN SENSOR)
Multifunction wiper and washer switch Rain sensor unit
Integrated into the auto light sensor.
Auto washer switch
Detects and sends amount of rain
Pressing the switch makes washer fluid to be
drops to STICS
sprayed for 2 sec. with four wiping, and washer
fluid to be sprayed for 1.5 sec. with three
wiping, with no delay of time
Front nozzle assembly
Front nozzle
Installed on both sides of the cowl grille
assembly (one on each side). Sprays
washer fluid in fan-shape to cover the
windshield area as much as possible.
Washer reservoir tank assembly
STICS
Washer reservoir tank
Tank that supplies washer fluid to front washer
system
07-6
3. FUNCTIONS
1) Wiper and Washer Fluid Switch Operation
MIST The wiper operates for 1 cycle when
pushing up the lever. The lever will return Front Automatic Wiping Speed
to the "OFF" position when released. Control Switch
OFF Fast: Fast interval
Slow: Slow interval
Stop the operation.
AUTO
Operates automatically
according to the vehicle
speed or amount of rain.
LO
Continuous wipe,
slow operation
HI
Continuous wipe,
fast operation
Front Auto Washer Switch (AFW)
When the front wiper switch is off
and this switch is pressed,
Wiping without washer fluid will be sprayed and
washer spray the wiper will automatically
operate 4 times. Then, the fluid
will be sprayed again and the
wiper will automatically operate 3
times.
Wiper and Washer Coupled Operation
Pull the lever briefly (for less than 0.6 seconds):
One wiping cycle with washer spray Pull and hold the
Wiping stops lever for more than 0.6 seconds: Three wiping cycles
with washer spray
7810-01 07-7
2) STICS Control Logic Related to Wiper and Washer
▶ Wiper MIST and Front Washer Coupled Wiper
1. The wiper relay is turned on 0.3 seconds after turning "ON" the washer switch for 0.1 ~
0.59 seconds with the ignition key "ON", and it is turned off when the parking terminal is
turned off.
2. The wiper relay is turned on at 0.3 seconds after from the time when the washer switch is
turned on for more than 0.6 seconds with the ignition switch "ON". The wiper relay gets on
3 times immediately after turning off the washer switch.
07-8
3. When the washer switch is turned on for more than 0.6 seconds during the wiper operation
by INT switch, the operation in step (2) is performed.
4. When it is turned on for a certain period of time (0.1 to 0.59 seconds), the operation in
step (1) is performed.
7810-01 07-9
4. CIRCUIT DIAGRAM
