while the wiper switch is in the “AUTO” position.
Symptom 1.
When starting the engine with the multifunction wiper switch in the “AUTO”
position, the wiper operates one cycle to remind a driver that the wiper switch is in the
“AUTO” position.
If the above operation does not occur, place the wiper switch to "AUTO" position and
perform the following procedures:
If the wiper operates one cycle when moving the variable resistance knob from 5th
stage to 4th stage, replace the rain sensor or check the sensor for contamination and
tighteness. If the wiper does not operates, replace STICS and check if the wipe
operates properly.
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It rains but the system does not work in “AUTO” position.
Symptom 2.
Check if the wiper operates at high speed when grounding pin 1 and pin 2.Check
whether the multifunction wiper switch is in the “AUTO” position.
Check the power to the sensor. Check the conditions of the pin 3 (Ground) and the
pin 4 (IGN).
Check the wiper relay for defective.
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The wiper operates 3 or 4 times at high speed abruptly.
Symptom 3.
Check whether the variable resistance knob on the multifunction wiper switch is set in
“FAST”. The “FAST” is the highest stage of the sensitivity and very sensitive to
small amount of rain drops. Therefore, change the knob to the low sensitivity.
▶Trouble Shooting
Symptom 4. The wiper operates continuously even on the dry glass.
Check the wiper blade for wear. If the wiper blade cannot wipe the glass uniformly
and clearly, this problem could be occurred. In this case, replace the wiper blade with
a new one.
Check whether the variable resistance knob on the multifunction wiper switch is set in
“FAST”. The “FAST” is the highest stage of the ensitivity and very sensitive to
small amount of rain drops. Therefore, change the knob to the low sensitivity.
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Symptom 5. The wiper responses are too fast or too slow.
Check whether the variable resistance knob on the wiper switch is set in “FAST” or
“SLOW”. Notify that the customer can select the sensitivity by selecting the variable
resistance value. And, select a proper stage.
▶Auto Light Control
The tail lamps and headlamps can be controlled by the communication with the rain
sensor only when the auto light switch is in “AUTO” position with the ignition
switch “ON”.
Rain detected headlamp: If it rains heavy which requires the highest AUTO speed, the
headlamps are turned on automatically (while the light switch is in “AUTO”
position and the wiper switch is in “AUTO” position).
Night detected wiping: When the auto light control turns on the headlamps and the rain
sensor detects the rain, the wiper sensitivity is automatically increased by one level.
(i.e. the AUTO wiper switch is at the 3rd level, but the wiper operates at the 4th level.)
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▶Speed Sensitive AUTO Wiper
For RKSTICS without the rain sensor, perform the following operation:
Controls the wiper intermittent operation by the values from the vehicle speed and the
volume.
-
Calculates and converts the Intermittent interval automatically by using the
UTO
switch to the “ON” position with the engine running or starting the engine with
the AUTO switch positioned to “ON”.
Intermittent interval (at 0 km/h): 3 ± 0.5 ~ 19 ± 2 seconds
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Vehicle speed calculation-
[Input the vehicle speed]
It is calculated by the numbers of input pulses for one second.
1 [PULSE/SEC] =
60 [km/h] x 60 [sec]
637 x 4 PULSE
≒ 1.41 [km/h]
VOLUME calculation-
The pause time of the vehicle speed sensitive AUTO wiper is calculated by the
AUTO volume (input voltage). Each level has the hysteresis.
·
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 the VOLUME.
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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.
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