Hyundai Santa Fe (2006 year). Manual - part 179

WINDSHIELD WIPER／WASHER

BE -177

DESCRIPTION

E65E5882

The Rain sensing windshield wiper system is a wiper sys-
tem that, in addition to providing normal wiper functions off,
mist, manual low speed, manual high speed, and wash,
provides automatic control of automatic intermittent auto-
matic low, and automatic high speeds.
When the ignition key is in the ON position, the rain sensor
(A) will be activated.

SCMBE6354D

OPERATING MODES - RAINSENSING

WINDSHIELD WIPER SYSTEM

E72BA1AD

MULTIFUNCTION SWITCH
POSITION

RAINSENSOR
OPERATING MODE

SENSOR ACTION

MIST

Mist is controlled by the column switch. The sensor
has no affect on this function

OFF

If not already parked, wiper motor runs in low speed
until blades are in the depressed park position.

AUTOMATIC
Automatic mode has 5
SENSITIVITY settings. This
is further defined in par 84.

AUTOMATIC

AUTOMATIC
Automatic INT/speed control.
The sensitvity to raindrop accumulation on the
windshield is set by the MULTIFUNCTION SWITCH
sensitivity adjustment.

LOW SPEED

MANUAL

Wiper motor runs continuously in low speed, for
example 45 wipes/minute.
The sensor has no affect on this function

HI SPEED

MANUAL

Wiper motor runs continuously in high speed,
for example 60 wipes/minute.
The sensor has no affect on this function

WASH - DEMAND
WASHER SW ≥ 0.6 SEC

WASH

If washer sw on after 0.6 sec then wipes during
2.5 to 3.8 sec. The rain sensor enables the wipers
and controls the after wipes.

WASH - DEMAND
WASHER SW ＜ 0.6 SEC

WASH

If washer sw on less than 0.2 to 0.6 sec then once wipes

BE -178

BODY ELECTRICAL SYSTEM

OFF MODE

With the wipe switch in the OFF position and the ignition
switch in the ON positions, the Rainsensor is considered
to be in "OFF" mode. In this mode, the sensor commands
the wiper to be off.

The Rainsensor monitors the state of the windshield dur-
ing OFF mode so that knowledge of the state of the wind-
shield is present when the MULTIFUNCTION SWITCH is
moved to any SENSITIVITY setting. This optimizes the
performance of the sensor when moving from the OFF
condition to an AUTOMATIC mode.

The algorithm as-

sumes the nominal sensitivity setting when in the OFF
mode.

AUTOMATIC MODE

When the MULTIFUNCTION SWITCH is moved to AUTO
position and the ignition switch is in the RUN or ACCES-
SORY positions, the Rainsensor is considered to be in
"AUTOMATIC" mode. Once a single "Instant wipe" as de-
scribed in par 8.8 has occurred, the wipers remain at "In-
nerwiper/park" untill the Rainsensor determines that the
dwell time at that position is appropriate for the amount of
precipitation on the windshield, considering the driver in-
put from the switch SENSITIVITY setting. After the dwell
time the Rainsensor provides input to the wiper motor to
activate the wipers to clear the preciptation from the wind-
shield.

AUTOMATIC INT

For all AUTOMATIC INT operations the Rainsensor com-
mands the wipers to operate in LOW SPEED for one wipe,
followed by a variable dwell period in the inner wipe posi-
tion.

AUTOMATIC LOW

AUTOMATIC LOW SPEED operation is utilized when the
amount of precipitation imping on the windshield exceeds
the AUTOMATIC INT TO AUTOMATIC LOW threshold.
This threshold includes sufficient hysterisis to prevent
cycling between AUTOMATIC INT and AUTOMATIC LOW
SPEED operation with a steady amount of precipitation
accumulation on the windshield.

AUTOMATIC HIGH

AUTOMATIC HIGH SPEED operation is utilized when the
amount of precipitation imping on the windshield exceeds
the AUTOMATIC LOW to AUTOMATIC HIGH threshold.
This threshold includes sufficient hysterisis to prevent cy-
cling between AUTOMATIC LOW to AUTOMATIC HIGH
operation with a steady amount of precipitation accumu-
lation on the windshield.

WASH MODE

The Rainsensor monitors the MULTIFUNCTION SWITCH
to determine if the wash function is selected. Rainsensor
enables the wiper motor to run in low speed during the
wash mode and performs follow up wipes during 2.5 to 3.8
sec.

MANUAL MODE

The Rainsensor determines when a manual mode such
as manual low, Mist, Off or manual high is selected. The
column switch performs these modes and the rain sensor
has no affect.

WINDSHIELD WIPER／WASHER

BE -179

INSPECTION

EF3F0CB0

RAIN SENSING WIPER

In IGN2 ON state, if auto switch input (LIN commu-
nication) is ON then both wiper low relay and wiper
high relay outputs are controlled by the rain sensor
input signal.

If the wiper switch has been left in automatic mode
with the vehicle ignition OFF, and then the vehicle ig-
nition switch is turned on, a single wipe will be per-
formed.

WIPER AUTO

IGN2

WIPER LOW

RELAY

OFF

AUTO

OFF

ETBF145E

A single wipe will be performed whenever rain has
been detected (Rain Detected signal from Rain sen-
sor) and the wiper switch is moved to the AUTO posi-
tion. But a single wipe will not be performed when the
wiper switch is moved to the AUTO position and OFF
signal is being received from Rain sensor. But if the
wiper switch is moved to AUTO position for the first
time since vehicle ignition switch is turned on then a
single wipe will be performed regardless of Rain De-
tected or OFF signal.

IGN2

WIPER AUTO

WIPER

AUTO

OFF

ON
OFF

LOW

Single

ETBF145F

The drive may adjust the rain sensor performance
by adjusting the sensitivity input. When in automatic
mode, the BCM will perform a single wipe each time
the sensitivity is adjusted upward to a more sensitive
setting (downward more then one step). This single
wipe will only be performed if Rain Detected signal is
being received from the Rain sensor. If the sensitivity
adjustment is adjusted upward more than one sensi-
tivity, the BCM will only perform a single wipe unless
the time between Increases is more than 2 seconds.

WIPER AUTO

SENSITIVITY

ADJUSTED UP

LESS THEN 2SEC

RAIN SENSOR

WIPER LOW

RELAY

OFF

AUTO

OFF

Step 1

Step 2

Step 3

Step 5

Rain Detected

OFF

Step 4

ETBF145G

Fault strategy for the rain sensor
Rain Sensor Fault 1 - Internal Fault Detected
This failure is detected when the wiper is in automatic
mode and the input faulty rain sensor from the rain
sensor has a duty cycle corresponding to Fault 1. The
confirmation delay for the failure is of 1 sec.
When this failure is detected, the wiper outputs are
OFF and the wiper will also do a wipe in slow speed
on the transition from sensitivity 3 to sensitivity 2 (Step
2 to 3) in order to signal the presence of this fault. If
another sensitivity is set, the wiper won’ t make any
additional wipe.

Fault 1

Sensitivity 3

Single

Wiping

Sensitivity 2

Rain sensor

Output to BCM

Sensitivity Adjust

from 3 to 2

Wiper Low

Relay

OFF

ETBF145H

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BODY ELECTRICAL SYSTEM

Rain Sensor Fault 2 - Glass Attachment Fault De-
tected
This failure is detected when the wiper is in automatic
mode and the input faulty rain sensor from the rain
sensor has a duty cycle corresponding to Fault 2. The
confirmation delay for the failure is of 1 s.
When this failure is detected, the wiper outputs are
OFF and the wiper will also do a wipe on the transition
from sensitivity 4 to sensitivity 3 (Step 1 to 2) in order
to signal the presence of this fault. If another sensitiv-
ity is set, the wiper won’ t make any additional wipe.

Fault 2

Sensitivity 4

Single

Wiping

Sensitivity 3

Rain sensor

Output to BCM

Sensitivity Adjust

from 4 to 3

Wiper Low

Relay

OFF

ETBF145I

Rain Sensor Fault 3 - No Input Signal Present
This failure is detected when the wiper is in automatic
mode and the input faulty rain sensor from the rain
sensor has a duty cycle corresponding to Fault 3 or
in case the duty cycle of the input faulty rain sensor is
0% or 100%. The confirmation delay for the failure is
of 1 s.
When this failure is detected, the wiper outputs are
OFF.

REMOVAL

EB4E2F2B

CAUTION

The dust or foreign substance on the rain sensor
have a bad effect upon the rain sensor capabil-
ity,so protect the sensor surface with protection
cover until installing the rain sensor to bracket for
accurate funtion.
The coupling pad on the rain sensor surface has
adherive strength, so the coupling pad could stick
to the windshield by environment condition dur-
ing the using time.
If separate it by force, it could be damaged. So
make sure to separate the rain sensor from the
windshield carefully.

Remove the rain sensor cover first. Be careful not to
damage the cover latch by applying excessive force.
To remove the latch, pull aside the latch using the
cover hole (B) with the little (-) screwdriver (A).

KTBF365B

Remove the wiring harness connector (C) from sen-
sor.

Rain sensor module is attached to the front windshield
by glue replacing the front windshield, remove the rain
sensor module from the existing front windshield and
install on the new front windshield.

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