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WW-30
< SERVICE INFORMATION >
REAR WIPER AND WASHER SYSTEM
REAR WIPER AND WASHER SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000001328576
System DescriptionINFOID:0000000001328577
Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input terminals.
Terminal combination status is read by BCM ( body control module) when switch is turned ON.
BCM controls rear wiper ON and INT (intermittent) operation.
Power supplied at all times
through 50 A fusible link (letter M, located in fuse, fusible link and relay box)
to BCM terminal 55,
through 15 A fuse [No. 22, located in fuse block (J/B)]
to BCM terminal 42.
When ignition switch ON or START position, power is supplied
through 15 A fuse [No.1, located in fuse block (J/B)]
to BCM terminal 38,
through 10 A fuse [No. 84, located in IPDM E/R (intelligent power distribution module engine room)]
to combination switch terminal 14.
Ground is supplied
to BCM terminals 49 and 52
through grounds M35, M45 and M85,
to combination switch terminal 12
through grounds M35, M45 and M85.
REAR WIPER OPERATION
When the wiper switch is in rear wiper ON position, BCM detects rear wiper ON signal by BCM wiper switch
reading function.
BCM operates rear wiper motor, power is supplied
through BCM terminal 70
to rear wiper motor 4.
Ground is supplied
to rear wiper motor terminal 2
through grounds B15 and B45.
With power and ground supplied, the rear wiper operates.
PKIC9708E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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REAR WIPER AND WASHER SYSTEMWW-31
< SERVICE INFORMATION >
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INTERMITTENT OPERATION
The rear wiper motor operates the wiper arms at low speed approximately every 7 seconds.
When the wiper switch is in rear wiper INT position, BCM detects rear wiper INT signal by BCM wiper switch
reading function (Refer to BCS-4, "
System Description").
BCM operates rear wiper motor, power supplied
through BCM terminal 70
to rear wiper motor terminal 4.
Ground is supplied
to rear wiper motor terminal 2
through grounds B15 and B45.
With power and ground supplied, rear wiper operates at intermittent.
AUTO STOP OPERATION
With rear wiper switch turned OFF, rear wiper motor will continue to operate until wiper arm reaches rear wiper
stopper.
Then wiper motor turns the other way and wiper arm moves once until wiper arm reaches stopper.
WASHER OPERATION
When the wiper switch is in rear wiper washer positi on, BCM detects rear wiper washer signal by BCM wiper
switch reading function (Refer to BCS-4, "
System Description"), and combination switch (wiper switch) ground
is supplied
to combination switch terminal 11
through front and rear washer pump terminal 2,
to front and rear washer pump terminal 1
through combination switch terminal 13
through combination switch terminal 12
through grounds M35, M45 and M85.
With ground supplied, front and rear washer pump is operated.
When the BCM detects that washer pump has operated fo r. 0.4 seconds or linger, BCM operates rear wiper
pump low speed.
When the BCM detects washer switch is OFF, low speed operation cycles approximately 3 times and then
stops.
BCM WIPER SWITCH READING FUNCTION
Refer to BCS-4, "System Description".
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WW-32
< SERVICE INFORMATION >
REAR WIPER AND WASHER SYSTEM
Wiring Diagram - WIP/ R -
INFOID:0000000001328578
TKWM4376E
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Page 3908 of 3924
REAR WIPER AND WASHER SYSTEMWW-33
< SERVICE INFORMATION >
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Terminal and Reference Value for BCMINFOID:0000000001328579
CAUTION:
Check combination switch system terminal wavef orm under the loaded condition with lighting
switch, turn signal switch an d wiper switch OFF not to be fluctuated by overloaded.
Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper inter-
mittent dial position. Wiper intermittent dial position can be confirmed on CONSULT-III. Refer to WW-
15, "CONSULT-III Functions (BCM)".
TKWM4377E
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WW-34
< SERVICE INFORMATION >
REAR WIPER AND WASHER SYSTEM
Te r m i n a l No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
5Y/R Combination
switch input 2 ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Rear washer switch
Approx. 1.0 V
Rear wiper switch ON Approx. 0.8 v
6SB Combination
switch input 1 ONLighting, turn,
wiper switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Rear wiper INT
Approx. 1.0 V
32 GY/R Combination
switch output 5
ONLighting, turn,
wiper switch
(Wiper intermittent
dial position 4) OFF
Approx. 7.0 - 7.5 V
Rear wiper ON Approx. 1.0 V
PKIB4959J
PKIB4955J
PKIB4959J
PKIB4960J
PKIB4956J
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REAR WIPER AND WASHER SYSTEMWW-35
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How to Proceed with Trouble DiagnosisINFOID:0000000001328580
1. Confirm the symptoms and customer complaint.
33 G Combination
switch output 4 ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF
Approx. 7.2 V
Rear wiper switch INT Approx. 1.2 V
34 W/B Combination
switch output 3
ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF
Approx. 7.2 V
Rear washer switch Approx. 1.2 V
38 W/L Ignition switch
(ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 L/R Battery power
supply
OFF — Battery voltage
49 B Ground ON — Approx. 0 V
52 B Ground ON — Approx. 0 V
55 G Battery power
supply OFF — Battery voltage
59 Y Rear wiper auto
stop signal
ONWiper operating Approx. 0 V
Wiper stopped Battery voltage
70 SB Rear wiper mo-
tor output signal ON Wiper switch OFF Approx. 0 V
ON Battery voltage
Te r m i n a l
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J
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WW-36
< SERVICE INFORMATION >
REAR WIPER AND WASHER SYSTEM
2. Understand operation description and function description. Refer to WW-30, "System Description".
3. Perform the Preliminary Check. Refer to WW-36, "
Preliminary Check".
4. Check symptom and repair or r eplace the cause of malfunction.
5. Does the rear wiper and washer operate no rmally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001328581
CHECK POWER SUPPLY AND GROUND CIRCUIT
1.CHECK FUSES
Check for blown fuses.
Refer to WW-32, "Wiring Diagram - WIP/ R -".
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate caus e of malfunction before installing new fuse, Refer to PG-
3, "Schematic".
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
CONSULT-III Functions (BCM)INFOID:0000000001328582
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
Unit Power source Fuse and fusible link No.
BCM BatteryM
22
Ignition ON or START 1
Front and rear washer pump Ignition ON or START 84
(+) (-)Ignition switch position
BCM connector Terminal OFF ON M3 38 GroundApprox. 0 V Battery voltage
M4 42 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIA7520E
BCM connector Terminal
GroundContinuity
M4 49
Ye s
52
SKIA5294E
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REAR WIPER AND WASHER SYSTEMWW-37
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DATA MONITOR
Display Item List
NOTE:
This item is displayed, but cannot be monitored.
ACTIVE TEST
Display Item List
Rear Wiper Does Not OperateINFOID:0000000001328583
1.CHECK CIRCUIT BETWEEN COMB INATION SWITCH AND BCM
With CONSULT-III
1. Select “RR WIPER ON” of BCM data monitor item.
2. With operating the wiper switch, check the monitor status.
Without CONSULT-III
Refer to LT-104, "
Combination Switch Inspection".
BCM diagnosis position Diagnosis mode Description
WIPER DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Device operation can be checked by applying a drive signal to device.
Monitor item Contents
IGN ON SW “ON/OFF” Displays status (ignition switch IGN position: ON/other: OFF) of ignition switch judged from the
ignition switch signal.
IGN SW CAN “ON/OFF” Displays status (ignition switch IGN position: ON/other: OFF) of ignition switch judged from the
ignition switch signal (CAN communication lines).
FR WIPER HI “ON/OFF” Displays status (front wiper switch high position: ON/other: OFF) of front wiper high switch
judged from the front wiper switch signal.
FR WIPER LOW “ON/OFF” Displays status (front wiper switch low position: ON/other: OFF) of front wiper low switch
judged from the front wiper switch signal.
FR WIPER INT “ON/OFF” Displays status (front wiper switch intermittent
position: ON/other: OFF) of front wiper intermit-
tent switch judged from the front wiper switch signal.
FR WASHER SW “ON/OFF” Displays status (front washer switch ON position: ON/other: OFF) of front washer switch
judged from the front wiper switch signal.
INT VOLUME “1 - 7” Displays status (wiper intermittent dial position setting 1- 7) of intermittent volume switch
judged from the front wiper switch signal.
FR WIPER STOP “ON/OFF” Displays status (front wiper stop position: ON/move: OFF) of front wiper motor stop judged
from the front wiper auto stop signal.
VEHICLE SPEED “km/h” Displays status vehicle sp eed as judged from vehicle speed signal.
RR WIPER ON “OFF” Displays status (rear wiper switch ON position: ON/other: OFF) of rear wiper switch judged
from the rear wiper switch signal.
RR WIPER INT “OFF” Displays status (rear wiper switch intermittent position: ON/other: OFF) of rear wiper intermit-
tent switch judged from the rear wiper switch signal.
RR WASHER SW “OFF” Displays status (rear washer switch ON position: ON/other: OFF) of rear washer switch judged
from the rear wiper switch signal.
RR WIPER STOP “OFF” Displays status (rear wiper stop position: OFF/move: ON) of rear wiper motor stop judged from
the rear wiper auto stop signal.
H/L WASH SW
NOTE“ON/OFF” —
Test item Display on CONSULT-III screen Description
Front wiper output FR WIPER With a certain operation (OFF, HI, LO, INT), front wiper can be operated. Rear wiper output RR WIPER Rear wiper can be operated by any ON-OFF operation
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