2007 NISSAN 350Z ignition

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 November2007 350Z
FRONT WIPER AND WASHER SYSTEMPFP:28810
Components Parts and Harness Connector LocationNKS0051Z
System DescriptionNKS00520

All front wiper relays (HI, LO) are included in IPDM E/R (intelligent power distribution module engine
room).

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 front wiper LO, HI, and INT (intermittent) operation.

IPDM E/R operates wiper motor according to CAN communication signals from BCM.
OUT LINE
Power is supplied at all times

to ignition relay, located in IPDM E/R, from battery direct

through 40 A fusible link [letter F, located in fuse, fusible link and relay box]

to BCM terminal 55,

through 10 A fuse [No.18 located in fuse block (J/B)]

to BCM terminal 42,

through 30 A fuse [No.73 located in IPDM E/R]

to front wiper relay, located in IPDM E/R,

through 15 A fuse [No.78 located in IPDM E/R]

to CPU (central processing unit) located in IPDM E/R,

through 10 A fuse [No.71 located in IPDM E/R]

to CPU located in IPDM E/R.
When ignition switch is in ON or START position, power is supplied

to ignition relay, located in IPDM E/R,

through 10 A fuse [No.1 located in fuse block (J/B)]

to BCM terminal 38,

through ignition relay, located in IPDM E/R

to front wiper relay, located in IPDM E/R

to front wiper high relay, located in IPDM E/R

to CPU located in IPDM E/R,

through 10 A fuse [No.84 located in IPDM E/R]

through IPDM E/R terminal 44
PKID0828E

FRONT WIPER AND WASHER SYSTEM
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Revision: 2006 November2007 350Z
MIST OPERATION
When the wiper switch is turned to the mist position, wiper low speed operation cycles once and then stops.
For additional information about wiper operation under this condition, refer to WW-5, "
LOW SPEED WIPER
OPERATION" .
If switch is held in mist position, low speed operation continues.
FAIL-SAFE FUNCTION
If an abnormality occurs in CAN communications, IPDM E/R holds the condition just before fail-safe status is
initiated until ignition switch is turned off. (If wipers were operating in LO just before the initiation of fail-safe
status, they continue to operate in LO until ignition switch is turned OFF)
COMBINATION SWITCH READING FUNCTION
Description

BCM reads combination switch (wiper) status, and controls related systems such as headlamps and wip-
ers, according to the results.

BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1 - 5)
and five input terminals (INPUT 1 - 5).
Operation Description

BCM activates transistors of output terminals (OUTPUT 1 - 5) periodically, and allows current to flow in
turn.

If any (1 or more) switches are turned ON, circuit of output terminals (OUTPUT 1 - 5) and input terminals
(INPUT 1 - 5) becomes active.

At this time, transistors of output terminals (OUTPUT 1 - 5) are activated to allow current to flow. When
voltage of input terminals (INPUT 1 - 5) corresponding to that switch changes, interface in BCM detects
voltage change, and BCM determines that switch is ON.
PKIC4861E

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 November2007 350Z
Terminals and Reference Values for BCMNKS00525
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 dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-III. Refer to WW-19, "
DATA MONITOR" .
Te r -
minal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
4PU/WCombination
switch input 3ONLighting, turn,
wiper switch
(Wiper intermit-
tent dial position 4)OFF Approx. 0 V
Any of the conditions below

Front wiper switch MIST

Front wiper switch INT

Front wiper switch LO
Approx. 1.0 V
5Y/RCombination
switch input 2ONLighting, turn,
wiper switchOFF
(Wiper intermittent dial position 4)Approx. 0 V
Any of the conditions below

Front washer switch

Wiper intermittent dial position 1

Wiper intermittent dial position 5

Wiper intermittent dial position 6
Approx. 1.0 V
PKIB4959J
PKIB4959J

FRONT WIPER AND WASHER SYSTEM
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6Y/GCombination
switch input 1ONLighting, turn,
wiper switchOFF
(Wiper intermittent dial position 4)Approx. 0 V
Any of the conditions below

Front wiper switch HI

Wiper intermittent dial position 3
Approx. 1.0 V
Any of the conditions below

Wiper intermittent dial position 1

Wiper intermittent dial position 2
Approx. 1.7 V
Any of the conditions below

Wiper intermittent dial position 6

Wiper intermittent dial position 7
Approx. 0.8 V
32 G/BCombination
switch output 5ONLighting, turn,
wiper switchOFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below

Wiper intermittent dial position 1

Wiper intermittent dial position 2

Wiper intermittent dial position 6

Wiper intermittent dial position 7
Approx. 1.0 V Te r -
minal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4959J
PKIB4952J
PKIB4955J
PKIB4960J
PKIB4956J

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 November2007 350Z
33 GCombination
switch output 4ONLighting, turn,
wiper switchOFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below

Wiper intermittent dial position 1

Wiper intermittent dial position 5

Wiper intermittent dial position 6
Approx. 1.2 V
34 W/LCombination
switch output 3ONLighting, turn,
wiper switchOFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below

Wiper intermittent dial position 1

Wiper intermittent dial position 2

Wiper intermittent dial position 3
Approx. 1.2 V
35 W/GCombination
switch output 2ONLighting, turn,
wiper switch
(Wiper intermit-
tent dial position 4)OFF
Approx. 7.2 V
Any of the conditions below

Front wiper switch INT

Front wiper switch HI
Approx. 1.2 V Te r -
minal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J

FRONT WIPER AND WASHER SYSTEM
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Terminals and Reference Values for IPDM E/RNKS00526
How to Proceed With Trouble DiagnosisNKS00527
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to WW-4, "
System Description" .
3. Perform preliminary check. Refer to WW-18, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the front wiper and washer operate normally? If YES, GO TO 6. If NO, GO TO 4.
36 W/RCombination
switch output 1ONLighting, turn,
wiper switch
(Wiper intermit-
tent dial position 4)OFF
Approx. 7.2 V
Any of the conditions below

Front wiper switch MIST

Front wiper switch LO

Front washer switch
Approx. 1.2 V
38 W/LIgnition switch
(ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 GYBattery power
supplyOFF — Battery voltage
52 B Ground ON — Approx. 0 V
55 RBattery power
supplyOFF — Battery voltage Te r -
minal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4960J
PKIB4958J
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
21 L Low speed signal ON Wiper switchOFF Approx. 0 V
LOW Battery voltage
31 L/B High speed signal ON Wiper switchOFF Approx. 0 V
HI Battery voltage
32 L/Y Wiper auto stop signal ONWiper operating Battery voltage
Wiper stopped Approx. 0 V
38 B Ground ON — Approx. 0 V
44 OR Washer pump power supply ON — Battery voltage
48 L CAN − H—— —
49 P CAN − L—— —
60 B Ground ON — Approx. 0 V

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 November2007 350Z
6. INSPECTION END
Preliminary CheckNKS00528
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
Refer to WW-11, "
Wiring Diagram — WIPER —" .
OK or NG
OK >> GO TO 2
NG >> If fuse is blown, be sure to eliminate the cause of malfunction before installing new fuse, Refer to
PG-4, "
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 terminal 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.
Front washer pump Ignition switch ON or START 84
Front wiper motor, front wiper relay, front wiper HI relay Battery 73
BCMBatteryF
18
Ignition switch ON or START 1
Terminals Ignition switch position
(+)
(-) OFF ON
BCM
connectorTerminal
M90 38
GroundApprox. 0 V Battery voltage
M9142 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIB5199E
BCM
connectorTe r m i n a l
GroundContinuity
M91 52 Yes
PKIB5198E

FRONT WIPER AND WASHER SYSTEM
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Revision: 2006 November2007 350Z
CONSULT-III Function (BCM)NKS00529
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
WORK SUPPORT
Display Item List
NOTE:
Regarding wiper speed setting, if the BCM set value is initialized by the use of CONSULT-III work support,
then set it individually to OFF after the initialization because it is automatically set to ON by initializing CON-
SULT-III.
DATA MONITOR
Display Item List
NOTE:
1. Coupe models
2. This item is displayed, but cannot be monitored.
ACTIVE TEST
Display Item List
BCM diagnosis position Diagnosis mode Description
WIPERWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Device operation can be checked by applying a drive signal to device.
BCMSELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
Item Description CONSULT-III Factory setting
WIPER SPEED
SETTINGVehicle speed sousing type wiper control mode can be changed in this
mode. Vehicle speed sousing type wiper control mode between two ON/OFF.ON —
OFF×
Monitor item Contents
IGN ON SW “ON/OFF”Displays “ignition switch ON (ON)/Other OFF or ACC (OFF)” status as judged from ignition
switch signal.
IGN SW CAN “ON/OFF”Displays “ignition switch ON (ON)/Other OFF or ACC (OFF)” status as judged from CAN com-
munication signal.
FR WIPER HI “ON/OFF” Displays “FRONT WIPER HI (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WIPER LOW “ON/OFF” Displays “FRONT WIPER LOW (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WIPER INT “ON/OFF” Displays “FRONT WIPER INT (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WASHER SW “ON/OFF”Displays “FRONT WASHER Switch (ON)/Other (OFF)” status as judged from wiper switch
signal.
INT VOLUME “1 - 7” Displays intermittent operation dial position setting (1 - 7) as judged from wiper switch signal.
FR WIPER STOP “ON/OFF” Displays “Stopped (ON)/Operating (OFF)” status as judged from auto-stop signal.
VEHICLE SPEED “km/h” Displays vehicle speed status as judged from vehicle speed signal.
RR WIPER ON
NOTE 1“ON/OFF” Displays “Rear Wiper ON (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WIPER INT
NOTE 1“ON/OFF” Displays “Rear Wiper INT (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WASHER SW
NOTE 1“ON/OFF” Displays “Rear Washer Switch (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WIPER STOP
NOTE 1“ON/OFF” Displays “Rear Wiper Stop (ON)/Other (OFF)” status, as judged from wiper switch signal.
RR WIPER STP2
NOTE 2“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
NOTERR WIPER Rear wiper can be operated by ON−OFF operation.