bcm INFINITI FX35 2007 Service Manual

REAR WIPER AND WASHER SYSTEM WW-39
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Revision: 2006 July 2007 FX35/FX45
REAR WIPER AND WASHER SYSTEMPFP:28710
Component Parts and Harness Connector LocationNKS00333
System DescriptionNKS00334

Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input termi-
nals. 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
PKIC9708E

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REAR WIPER AND WASHER SYSTEM
Revision: 2006 July 2007 FX35/FX45

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.
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-3, "
COMBINATION SWITCH READING FUNCTION" ).
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 position, BCM detects rear wiper washer signal by BCM wiper
switch reading function (Refer to BCS-3, "
COMBINATION SWITCH READING FUNCTION" ), and combina-
tion 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 for. 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-3, "COMBINATION SWITCH READING FUNCTION" .

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Revision: 2006 July 2007 FX35/FX45
Terminals and Reference Values for BCMNKS00336
CAUTION:

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and 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-II. Refer to LT-
11 7, "DATA MONITOR" .
Terminal
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
5Y/R Combination
switch input 2 ON Lighting, turn,
wiper 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 ON Lighting, 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 ON Lighting, 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

REAR WIPER AND WASHER SYSTEM WW-45
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Revision: 2006 July 2007 FX35/FX45
How to Proceed With Trouble DiagnosisNKS00337
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to WW-39, "
System Description" .
3. Perform the Preliminary Check. Refer to WW-45, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the rear wiper and washer operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS00338
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Refer to WW-41, "Wiring Diagram — WIP/ R —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
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.
Unit Power source Fuse and fusible link No.
BCM Battery
M
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 Ground Approx. 0 V Battery voltage
M4 42 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIA7520E
BCM connector Terminal Ground Continuity
M4 49
Ye s
52
SKIA5294E

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REAR WIPER AND WASHER SYSTEM
Revision: 2006 July 2007 FX35/FX45
CONSULT-II Functions (BCM)NKS00339
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
DATA MONITOR
Operation Procedure
1. Touch “WIPER” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on “SELECT MONITOR ITEM” screen.
4. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is selected, all the items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop recording, touch “STOP”.
Display Item List
NOTE:
This item is displayed, but cannot be monitored. 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.
ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects items and monitors them.
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 speed 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” —

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ACTIVE TEST
Operation Procedure
1. Touch “WIPER” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “OFF” deactivates the operation.
Display Item List
Rear Wiper Does Not OperateNKS0033A
1. CHECK CIRCUIT BETWEEN COMBINATION SWITCH AND BCM
With CONSULT-ll
1. Select “BCM” on CONSULT-II, and select “WIPER” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen. Make sure that “RR WIPER ON”, turn ON-OFF according to
front wiper switch operation.
Without CONSULT-ll
Refer to LT- 11 8 , "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Check combination switch (wiper switch). Refer to LT-
11 8 , "Combination Switch Inspection" .
2. ACTIVE TEST
With CONSULT-ll
1. Select “BCM” on CONSULT-II, and select “WIPER” on “SELECT SYSTEM” screen.
2. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Select “REAR WIPER” on “SELECT TEST ITEM” screen.
4. Confirm that rear wiper operates normally.
Without CONSULT-ll
GO TO 3.
Does rear wiper operate normally?
YES >> Replace BCM. Refer to BCS-14, "Removal and Installa-
tion of BCM" .
NO >> GO TO 3.
Test item Display on CONSULT-II 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
PKIA7660E
SKIA3503E

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Revision: 2006 July 2007 FX35/FX45
3. CHECK BCM
With rear wiper switch ON, check voltage between rear wiper motor
harness connector D107 terminal 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear wiper motor connector.
3. Check continuity between rear wiper motor harness connector D107 terminal 2 and ground.
OK or NG
OK >> Replace rear wiper motor.
NG >> Repair harness or connector.
5. CHECK REAR WIPER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and rear wiper motor connector.
3. Check continuity between BCM harness connector B14 terminal 70 and rear wiper motor harness connector D107 terminal 4.
4. Check continuity between BCM harness connector B14 termi- nals 70 and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installation of BCM" .
NG >> Repair harness or connector. 4 – Ground : Battery voltage.
PKIB1784E
2 – Ground : Continuity should exist.
PKIA5200E
70 – 4 : Continuity should exist.
70 – Ground : Continuity should not exist.
PKID0795E

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Rear Wiper Does Not Return to Stop PositionNKS0033B
1. CHECK REAR WIPER MOTOR CIRCUIT
With CONSULT-ll
1. Select “BCM” on CONSULT-II, and select “WIPER” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen. Make sure that “RR WIPER STOP”, turn ON-OFF linked with
rear wiper switch operation.
Without CONSULT-ll
GO TO 2.
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installa-
tion of BCM" .
NG >> GO TO 2.
2. CHECK REAR WIPER AUTO STOP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and rear wiper motor connector.
3. Check continuity between BCM harness connector B14 terminal 59 and rear wiper motor harness connector D107 terminal 3.
4. Check continuity between BCM harness connector B14 terminal 59 and ground.
5. Check continuity between rear wiper motor harness connector D107 terminal 2 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
PKIA7660E
59 – 3 : Continuity should exist.
59 – Ground : Continuity should not exist.
PKID0796E
2 – Ground : Continuity should exist.
PKIA5200E

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REAR WIPER AND WASHER SYSTEM
Revision: 2006 July 2007 FX35/FX45
3. CHECK REAR WIPER MOTOR SIGNAL
1. Connect BCM connector and rear wiper motor connector.
2. Turn ignition switch ON.
3. Check voltage between rear wiper motor harness connector ter- minal and ground while rear wiper motor is stopped and while it
is operating.
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installation of BCM" .
NG >> Replace rear wiper motor.
Only Rear Wiper ON Does Not OperateNKS0033C
Refer to LT- 11 8 , "Combination Switch Inspection" .
Only Rear Wiper INT Does Not OperateNKS0033D
Refer to LT- 11 8 , "Combination Switch Inspection" .
Wiper Does Not Wipe When Rear Washer OperatesNKS0033E
Refer to LT- 11 8 , "Combination Switch Inspection" .
Rear Wipers Do Not StopNKS0033F
1. CHECK CIRCUIT BETWEEN COMBINATION SWITCH AND BCM
With CONSULT-ll
1. Select “BCM” on CONSULT-II, and select “WIPER” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen. Make sure that “RR WIPER INT”, “RR WIPER ON”, and “RR
WASHER SW” turn ON-OFF according to wiper switch opera-
tion.
Without CONSULT-ll
Refer to LT- 11 8 , "
Combination Switch Inspection" .
OK or NG
OK >> Replace BCM. Refer to BCS-14, "Removal and Installa-
tion of BCM" .
NG >> Check combination switch (wiper switch). Refer to LT- 11 8 , "
Combination Switch Inspection" .
(+)
(-) Condition Voltage
Rear wiper
motor Connector Te r m i n a l
D107 3 Ground Wiper stopped Battery voltage
Wiper operating Approx. 0 V
PKIA5203E
PKIA7660E