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FRONT WIPER AND WASHER SYSTEM
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BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication according to the
front wiper INT operation condition and the intermittent operation delay interval judged value.
Front wiper INT operating condition- Ignition switch ON
- Front wiper switch INT
Intermittent operation delay interval judgment- BCM calculates the intermittent operation delay interval from the vehicle speed signal received from the
wiper dial position and the combination meter with CAN communication.
IPDM E/R turns the integrated front wiper relay ON so that the front wiper is operated only once according to
the front wiper request signal (INT).
BCM detects stop position/except stop position of the front wiper motor according to the front wiper stop
position signal received from IPDM E/R with CAN communication.
BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval after
the front wiper motor is stopped.
FRONT WIPER AUTO OPERATION (IF EQUIPPED)
BCM receives the wiping speed request signal from the rain sensor with the light and rain sensor serial link.
BCM judges the auto wiping condition depending on the wiping speed request signal and the rain sensor
sensitivity setting under front wiper AUTO operating condition.
BCM transmits the front wiper request signals (LO or HI) to the IPDM E/R through CAN communication line
according to the auto wiping condition.
NOTE:
When the wiper volume is turned down at 1 level with front wiper AUTO operating condition, BCM transmits
front wiper request signal (LO) to IPDM E/R with CAN communication.
Front wiper AUTO operating condition- Ignition switch ON
- Front wiper switch AUTO
Rain sensor sensitivity setting- BCM determines rain sensor sensitivity according to a wiper volume.
Wiper intermittent dial posi-
tionIntermittent
operation
intervalIntermittent operation delay Interval (s)
Vehicle speed
Vehicle stopped or
less than 5 km/h
(3.1 MPH)5 km/h (3.1 MPH)
or more or less
than 35 km/h (21.7
MPH)35 km/h (21.7
MPH) or more or
less than 65 km/h
(40.4 MPH)65 km/h (40.4
MPH) or more
1Short
↑
↓
Long0.8 0.6 0.4 0.24
2 4321.2
3107.553
4161284.8
5 2418127.2
6 3224169.6
7 4231.52112.6
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FRONT WIPER AND WASHER SYSTEM
IPDM E/R turns ON the integrated front wiper relay and front wiper HI relay according to the front wiper
request signal (LO or HI).
Light and rain sensor transmits rain sensor signal to BCM for HI operation immediately after sensing the
raindrops increase under the wiper motor LO operating with the front wiper switch AUTO.
FRONT WIPER AUTO STOP OPERATION
BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
IPDM E/R detects the front wiper auto stop signal from the front wiper motor and detects the front wiper
motor position (stop position/except stop position).
When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper
motor returns to the stop position.
NOTE:
BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF.
IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.
FRONT WIPER OPERATION LINKED WITH WASHER
BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the
washer linked operating condition of the front wiper.
BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 3 times
when the front washer switch OFF is detected.
Washer linked operating condition of front wiper- Ignition switch ON
- Front washer switch ON (0.4 second or more)
IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
The front and rear washer motor is grounded through the combination switch with the front washer switch
ON.
FRONT WIPER DROP WIPE OPERATION
BCM controls the front wiper to operate once according to the conditions of front wiper drop wipe operation.
Front wiper drop wipe operating condition- Ignition switch ON
- Front wiper switch OFF
Wiper intermittent dial posi-
tionSensitivity
1
High sensitivity
2
3
Medium−high sensitivity
4
5
Low−medium sensitivity
6
7 Low sensitivity
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FRONT WIPER AND WASHER SYSTEM
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- Front washer switch OFF
BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication so that the front
wiper operate once three seconds after front wiper operation linked with washer.
IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
FRONT WIPER FAIL−SAFE OPERATION
IPDM E/R performs the fail-safe function when the front wiper auto stop circuit is malfunctioning. Refer to
WW-52, "
FailSafe".
BCM performs fail-safe operation when light and rain sensor (if equipped) or light and rain sensor-related
systems are malfunctioning. Refer to EXL-55, "
Description".
Component Parts LocationINFOID:0000000001366594
1. IPDM E/R E45, E46, E48 2. BCM M18, M20 (view withglove box
removed)3. Front wiper motor (LHD) E1 (view
with cowl top cover removed)
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FRONT WIPER AND WASHER SYSTEM
Component Description
INFOID:0000000001366595
4. Front wiper motor (RHD) E1 (view
with cowl top cover removed5. Front and rear washer motor E2
(view with front bumper fascia re-
moved)6. Combination switch (wiper and wash-
er switch) M28
7. Light and rain sensor R11 (if
equipped) (view with finisher re-
moved)8. Combination meter M24 Front
Part Description
BCM Judges each switch status by the combination switch reading function.
Requests (with CAN communication) the front wiper relay and the front wiper high relay ON to
IPDM E/R.
IPDM E/R Controls the integrated relay according to the request (with CAN communication) from BCM.
Performs the auto stop control of the front wiper.
Combination switch
(Wiper and washer
switch)Refer to WW-4, "
System Diagram".
Combination meter Transmits the vehicle speed signal to BCM with CAN communication.
Light and rain sensor (if
equipped)Detects water droplets on the windshield with infrared rays, and transmits the rain sensor signal
to BCM through the light and rain sensor serial link.
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REAR WIPER AND WASHER SYSTEM
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Component Parts LocationINFOID:0000000001366598
Component DescriptionINFOID:0000000001366599
1. Combination switch (wiper and wash-
er switch) M282. BCM M18, M20 (view with glove box
removed)3. Front and rear washer motor E2
(view with front bumper fascia re-
moved)
4. Rear wiper motor D404 Front
ALLIA0272ZZ
Part Description
BCM Judges each switch status by the combination switch reading function.
Supplies power to the rear wiper motor.
Performs the auto stop control of the rear wiper.
Combination switch
(Wiper and washer switch)Refer to WW-9, "
System Diagram".
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HEADLAMP WASHER SYSTEM
HEADLAMP WASHER SYSTEM
System DiagramINFOID:0000000001366600
System DescriptionINFOID:0000000001366601
OUTLINE
The headlamp washer is controlled by each function of BCM and IPDM E/R.
Control by BCM Combination switch reading function
Headlamp washer control function
Control by IPDM E/R Relay control function
HEADLAMP WASHER BASIC OPERATION
BCM detects the combination switch condition by the combination switch reading function.
BCM transmits the headlamp washer request signal to IPDM E/R with CAN communication depending on
each operating condition of the headlamp washer.
Operating conditions (The first time)
- Ignition switch ON
- Headlamps ON (PASS excluded)
- Front washer switch ON at first time.
Operating conditions (From the second time)- Ignition switch ON
- Headlamps ON (PASS excluded)
- Front washer switch ON at fifth time after the first time.
ALLIA0274GB
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HEADLAMP WASHER SYSTEM
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IPDM E/R turns ON/OFF the headlamp washer relay by receiving the headlamp washer request signal, and
controls the headlamp washer twice.
Component Parts LocationINFOID:0000000001366602
Component DescriptionINFOID:0000000001366603
1. IPDM E/R E45, E46, E48 2. BCM M18, M20 (view with glove box
removed)3. Headlamp washer motor E35 (view
with front bumper fascia removed)
4. Combination switch (headlamp
switch) M285. Combination switch (wiper and wash-
er switch) M28
ALLIA0273ZZ
Part Description
BCM Judges each switch status by the combination switch reading function.
Requests (with CAN communication) the headlamp washer relay ON to IPDM E/R.
IPDM E/RControls the headlamp washer relay according to the request (with CAN communica-
tion) from BCM.
Combination switch
(Wiper and washer switch)Refer to WW-12, "
System Diagram".
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DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000001366604
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
WIPER
WIPER : CONSULT-III Function (BCM - WIPER)INFOID:0000000001366605
WORK SUPPORT
*:Factory setting
DATA MONITOR
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-54, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM part number is displayed.
CONFIGURATION Enables to read and save the vehicle specification.
Enables to write the vehicle specification when replacing BCM.
System Sub system selection itemDiagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
—BCM×
Exterior lamp HEAD LAMP×××
Wiper and washer WIPER×××
Combination switch COMB SW×
Back door switch DOOR LOCK××
Service itemSetting
itemDescription
WIPER SPEED
SETTINGON*With vehicle speed
(Front wiper intermittent time linked with the vehicle speed and wiper intermittent dial position)
OFFWithout vehicle speed
(Front wiper intermittent time linked with the wiper intermittent dial position)
Monitor Item
[Unit]Description
IGN ON SW Ignition switch ON status judged from ignition power supply.
IGN SW CAN Ignition switch ON status received from IPDM E/R with CAN communication.