02-78710-01
If the washer operating signal is inputted while the wipers are operating in intermittent or AUTO
mode, the system stores the previous intermittent interval and operates the washer coupled
wiper. After then, the wiper operation returns back to intermittent or AUTO mode with the
stored operating interval. 3.
02-8
(2) Rain Sensor Coupled Wiper
▶ System layout
This vehicle has a different wiper control logic compared to other models. As shown in the
system diagram, the rain sensor unit does not control wiper directly. The rain sensor unit sends
infrared rays signal through LED and then receives it with photo diode and then sends the
returned signal to STICS and the STICS controls the wipers directly.
For more details, refer to rain sensing wiper section in this manual.
02-14
▶ Speed Sensitive INT (Intermittent) Wiper
For STICS without rain sensor, perform the following operation:
1. Controls the wiper intermittent operation by the values from vehicle speed and volume.
Calculates and converts the Intermittent interval automatically by using the vehicle speed and
<00700075007b0047007d00760073007c0074006c0047009e008f008c00950047009b008f008c00470090008e00950090009b0090009600950047009a009e0090009b008a008f00470090009a004700900095004702c80076007502c9004700970096009a00
90009b009000960095004700880095008b0047009b008f008c> INT switch is in “ON”
position (the engine is running).
The wipers are operated in vehicle speed sensitive mode when turning the INT switch to
<02c80076007502c9004700970096009a0090009b0090009600950047009e0090009b008f0047009b008f008c0047008c0095008e00900095008c00470099009c0095009500900095008e0047009600990047009a009b00880099009b00900095008e004700
9b008f008c0047008c0095008e00900095008c0047009e0090>th the INT switch positioned
“ON”.
<00700095009b008c009900940090009b009b008c0095009b004700900095009b008c0099009d008800930047004f0088009b004700570047009200940056008f005000610047005a004700b7004700570055005c004700a5004700580060004700b7004700
590047009a008c008a00960095008b009a> -
-
-
2. Vehicle speed calculation
[Input the vehicle speed]
It is calculated by the numbers of input pulses for one second.
1 [pulses/sec] = 60 [km/h] x 60 [sec] / 637 pulses = 1.41 [km/h]
3. VOLUME calculation
Calculates the INT VOLUME with 5 grades as shown in the table in next page. -
4. Pause time calculation
Pause time: the duration that wipers are stopped at parking position
Elapsed time: the duration after the wiper motor started to operate from parking position
The pause time is calculated by the vehicle speed and VOLUME value as shown in the table
in next page. -
-
-
If the pause time is below 1.0 second, the wipers operate without pause.
If the pause time is over 1.5 seconds, the wipers operate intermittently. ·
·
07-4
2. CAUTIONS ON RAIN SENSOR
When the wiper switch is in the AUTO position, the wiper will operate for 1 cycle if the initial
engine start is made. This may cause the wiper blades to wear prematurely. Therefore, other
than rainy days, set the switch to the OFF position. Especially during the winter time, check if
the wiper blades are not frozen to the windshield.
Operating the wiper with the blades frozen can damage the wiper motor.
If you operate the wipers when the windshield is dry without spraying washer fluid, the
windshield can be scratched and the wiper blades can wear prematurely. Use the wiper with the
washer fluid when the windshield is dry.
When it does not rain, turn the wiper switch to the OFF position.
Turn the wiper switch to the OFF position before any car wash to avoid unwanted operation of
the wipers. -
-
-
-
When cleaning the windshield over the sensor with damp clothes, the wiper may operate
suddenly. It could cause serious injury. Make sure to place the wiper switch to the OFF
position and ignition switch OFF when not in use.
Irregular operation (abrupt operation) ▶
Check if the sensor is off the position.
Check if the rain sensor cover is securely installed.
Check if the customer is familiar to how to control the wiper sensitivity.
Check if the wiper sensitivity control is set to the FAST side (step 5).
Check the wiper blade for wear.
If the wiper blade cannot wipe the glass uniformly and clearly, it may cause the rain sensor to
work irregularly. Therefore, in this case, replace the wiper blade with a new one. -
-
-
-
08-58610-11
2. RAIN SENSOR OPERATION
The rain sensor is installed on the specific heat treated windshield that has minimum 13% of
transmittance rate with specified intensity of radiation. It is installed on the glass with a adhesive
of Sorepa.
It communicates with STICS and makes the wipers to operate automatically under the rain
sensing mode (multifunction switch wiper: AUTO mode).
The emitting section of the rain sensor unit emits infrared rays against the windshield and then
detects the amount of rain drops by receiving reflected rays with photodiode.
The sensing section on the windshield is located just above the center point between LED and
photodiode.
Components and functions of the rain sensor unit
Unit latch
Rain
sensor unit
PCB assembly and
emitter lens
Emitter lens
The LED emits the infrared
rays is located at bottom and
the lens guides the infrared
rays to target point.
Receiver lens
The receiver lens guides the
reflected infrared rays from
windshield to photodiode.
Housing and
receiver lens
Housing and PCB
Rear
Front
Rain sensor unit (including cover)
08-6
1) Rain Sensor Coupled Wiper
▶ System layout
This vehicle has a different wiper control logic compared to other models. As shown in the
system diagram, the rain sensor unit does not control wiper directly. The rain sensor unit sends
infrared rays signal through LED and then receives it with photo diode and then sends the
returned signal to STICS and the STICS controls the wipers directly.
For more details, refer to rain sensing wiper section in this manual.
08-138610-11
4. FUNCTIONS OF RAIN SENSOR
1) Windshield Glass and Coupler Attachment
Check the outer windshield surface of sensing area for wear, damage and scratch. The sensor is
able to compensate the wear up to a specific level. Check the coupler attached surface of
windshield for porosity. If the porosity exists, the sensor cannot function properly.
2) Recognition of AUTO Mode
3) Instant Wipe Function
When the variable resistance knob on the multifunction wiper switch is turned by each 1 stage
from low sensitivity (Smark) to high sensitivity (F mark), the wiper operates one cycle.
And, the wiper also operates during raining up to 5 minutes after rain stops.When the engine is started with the wi
per switch “AUTO” position, the wiper operates one cycle
<009b009600470099008c009400900095008b004700880047008b00990090009d008c00990047009b008f0088009b0047009b008f008c0047009e00900097008c00990047009a009e0090009b008a008f00470090009a004700900095004702c80068007c00
7b007602c9004700970096009a0090009b0090009600950055>
<007e008f008c00950047009b008f008c0047009e00900097008c00990047009a009e0090009b008a008f00470090009a0047009b009c00990095008c008b0047009b0096004702c80068007c007b007602c90047008d00990096009400470076006d006d00
530047009b008f008c0047009e00900097008c009900470096>perates one cycle. It always
operates one cycle for the initial operation, however, the wiper does not operate afterwards to
<00970099008c009d008c0095009b0047009b008f008c0047009e00900097008c00990047008900930088008b008c0047009e008c0088009900470090008d004700950096009b0047009900880090009500900095008e0047009e008f008c00950047009b00
9c0099009500900095008e0047009b008f008c0047009e0090>per switch to “AUTO” from
<02c80076006d006d02c900550047006f0096009e008c009d008c009900530047009b008f008c0047009e00900097008c0099004700960097008c00990088009b008c009a0047009c00970047009b00960047005c0047009400900095009c009b008c009a00
470088008d009b008c0099004700990088009000950047009a>tops.
If this function does not occur, check No. 2 terminal on the rain sensor. If any defective cannot
be found, check the wiper relay (LOW) for defective. 1.
2.
3.If the installed wiper brushes are out of specification (size and length), the rain sensing area
<008a0088009500950096009b00470089008c0047008d009c0093009300a00047009e00900097008c008b005500470047007000950047009b008f0090009a0047008a0088009a008c00530047009b008f008c004700990088009000950047009a008c009500
9a0096009902c5009a0047009a008c0095009a0090009b0090>vity could be decreased and the
wipers are not properly operated - The followings are the detailed description of the functions and operations of the rain sensing
wiper control.
<0068009a0047008b008c009a008a009900900089008c008b00530047009b008f008c0047007a007b0070006a007a00470099008c008a0096008e0095009000a1008c009a0047009b008f008c0047009e00900097008c00990047009a009e0090009b008a00
8f004702c80068007c007b007602c9004700970096009a0090>tion. If there are not any
problem, go to diagnosis mode in STICS and check the terminal that receives signal from
wiper and communication lines between rain sensor unit and STICS. -
When the variable resistance knob is rotated by 4 stage from 0 stage without stoping, the
wiper operates one cycle. The wiper operates one cycle when changing the wiping stage (0
→ 1, 1 → 2, 2 → 3). -