Page 5810 of 5883

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< FUNCTION DIAGNOSIS >
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.
Page 5811 of 5883

REAR WIPER AND WASHER SYSTEM
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REAR WIPER AND WASHER SYSTEM
System DiagramINFOID:0000000001366596
System DescriptionINFOID:0000000001366597
OUTLINE
The rear wiper is controlled by each function of BCM.
Control by BCM Combination switch reading function
Rear wiper control function
REAR WIPER BASIC OPERATION
BCM detects the combination switch condition by the combination switch reading function.
BCM controls the rear wiper to start or stop.
REAR WIPER ON OPERATION
BCM supplies power to the rear wiper motor according to the rear wiper ON operating condition.
Rear wiper ON operating condition
- Ignition switch ON
- Rear wiper switch ON
REAR WIPER INT OPERATION LINKED WITH VEHICLE SPEED
BCM supplies power to the rear wiper motor according to the INT operating condition.
Rear wiper INT operating condition- Ignition switch ON
- Rear wiper switch INT
BCM controls the rear wiper to operate once.
BCM detects the rear wiper motor stopping position.
BCM supplies power to the rear wiper motor after an intermittent from the stop of the rear wiper motor.
REAR WIPER AUTO STOP OPERATION
BCM stops supplying power to the rear wiper motor when the rear wiper switch is turned OFF.
ALLIA0271GB
JPLIA0165GB
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< FUNCTION DIAGNOSIS >
REAR WIPER AND WASHER SYSTEM
BCM reads an auto stop signal from the rear wiper motor to detect a rear wiper motor position.
When the rear wiper motor is at other than the stopping position, BCM continues to supply power to the rear
wiper motor until it returns to the stopping position.
NOTE:
BCM stops supplying power to the rear wiper motor when the ignition switch is turned OFF.
REAR WIPER OPERATION LINKED WITH WASHER
BCM supplies power to the rear wiper motor according to the washer linked operating condition of rear
wiper. When the rear washer switch is turned OFF, BCM controls rear wiper to operate approximately three
times.
Washer linked operating condition of rear wiper- Ignition switch ON
- Rear washer switch ON (0.4 second or more)
Washer pump becomes grounded through the combination switch when the rear washer switch is turned
ON.
REAR WIPER DROP WIPE OPERATION
BCM controls the rear wiper to operate once according to the rear wiper drop wipe operating condition.
Rear wiper drop wipe operating condition
- Ignition switch ON
- Rear wiper switch OFF
- Rear washer switch OFF
BCM controls the rear wiper so that it operates once time approximately three seconds later after the washer
interlocking operation of the rear wiper.
JPLIA0166GB
Page 5815 of 5883
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".
Page 5853 of 5883

BCM (BODY CONTROL MODULE)
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ECU DIAGNOSIS
BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000001366631
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
Refer to BCS-38, "Terminal Layout".
PHYSICAL VALUES
Refer to BCS-39, "Physical Values".
Monitor Item Condition Value/Status
FR WASHER SWFront washer switch OFF OFF
Front washer switch ON ON
FR WIPER LOWFront wiper switch OFF OFF
Front wiper switch LO ON
FR WIPER HIFront wiper switch OFF OFF
Front wiper switch HI ON
FR WIPER INTFront wiper switch OFF OFF
Front wiper switch INT ON
FR WIPER STOPAny position other than front wiper stop position OFF
Front wiper stop position ON
H/L SW POSLighting switch OFF OFF
Lighting switch 2ND ON
LIGHT SW 1STLighting switch OFF OFF
Lighting switch 2ND ON
HI BEAM SWLighting switch OFF OFF
Lighting switch HI ON
H/L WASH SWNOTE:
The item is indicated, but not monitoredOFF
IGN ON SWIgnition switch OFF or ACC OFF
Ignition switch ON ON
IGN SW CANIgnition switch OFF or ACC OFF
Ignition switch ON ON
INT VOLUME Wiper intermittent dial is in a dial position 1 - 7 1 - 7
RR WASHER SWRear washer switch OFF OFF
Rear washer switch ON ON
RR WIPER INTRear wiper switch OFF OFF
Rear wiper switch INT ON
RR WIPER ON Rear wiper switch OFF OFF
Rear wiper switch ON ON
RR WIPER STOPRear wiper stop position OFF
Other than rear wiper stop position ON
VEHICLE SPEED While driving Equivalent to speedometer reading
Page 5854 of 5883

WW-52
< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference ValueINFOID:0000000001366636
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
Refer to xxx.
PHYSICAL VALUES
Refer to xxx.
Fail SafeINFOID:0000000001366638
CAN communication control
When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If no CAN communication is available with BCM
Front wiper control
IPDM E/R detects the front wiper stop position with the front wiper auto stop signal.
When the front wiper auto stop signal is in the conditions listed below, IPDM E/R repeats a front wiper 10 sec-
onds operation and 20 seconds stop five times.
Monitor Item Condition Value/Status
HL WASHER REQIgnition switch ON, and low
beam headlamp is ONFront washer switch OFF Off
Front washer switch ON
(When headlamp washer is operat-
ing)On
FR WIP REQ Ignition switch ONFront wiper switch OFF STOP
Front wiper switch INT 1LOW
Front wiper switch LO Low
Front wiper switch HI Hi
WIP AUTO STOP Ignition switch ONFront wiper stop position STOP P
Any position other than front wiper
stop positionACT P
WIP PROT Ignition switch ONFront wiper operates normally Off
Front wiper stops at fail-safe oper-
ationBLOCK
IGN RLYIgnition switch OFF or ACC Off
Ignition switch ON On
IGN ON SWIgnition switch OFF or ACC Off
Ignition switch ON On
Control part Fail-safe in operation
Front wiper The status just before activation of fail-safe control is maintained until the ignition
switch is turned OFF while the front wiper is operating at LO or HI speed.
The front wiper is operated at LO speed until the ignition switch is turned OFF if the
fail-safe control is activated while the front wiper is set in the INT mode and the front
wiper motor is operating.
Headlamp washer Headlamp washer relay OFF