2007 NISSAN 350Z turn signal

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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

to front washer pump terminal 2.
Ground is supplied

to BCM terminal 52

through grounds M30 and M66,

to IPDM E/R terminals 38 and 60

through grounds E17, E43 and B102 (with VDC system, navigation system or telephone),

through grounds E17, E43 and F152 (without VDC system, navigation system and telephone),

to combination switch terminal 12

through grounds M30 and M66.
LOW SPEED WIPER OPERATION
When the front wiper switch is in low position, BCM detects low speed wiper ON signal by BCM wiper switch
reading function.
BCM sends front wiper request signal (LOW) with CAN communication line

from BCM terminals 39 and 40

to IPDM E/R terminals 48 and 49.
When the IPDM E/R receives front wiper request signal (LOW), it turns ON front wiper relay, located in the
IPDM E/R, power is supplied

to front wiper motor terminal 3

through IPDM E/R terminal 21 and front wiper high relay and front wiper relay.
Ground is supplied

to front wiper motor terminal 4

through grounds E17, E43 and B102 (with VDC system, navigation system or telephone),

through grounds E17, E43 and F152 (without VDC system, navigation system and telephone).
With power and ground is supplied, front wiper motor operates at low speed.
HIGH SPEED WIPER OPERATION
When the front wiper switch is in high position, BCM detects high speed wiper ON signal by BCM wiper switch
reading function.
BCM sends front wiper request signal (HI) with CAN communication line

from BCM terminals 39 and 40

to IPDM E/R terminals 48 and 49.
When the IPDM E/R receives front wiper request signal (HI), it turns ON front wiper relay, located in IPDM E/
R, power is supplied

to front wiper motor terminal 2

through IPDM E/R terminal 31 and front wiper high relay and front wiper relay.
Ground is supplied

to front wiper motor terminal 4

through grounds E17, E43 and B102 (with VDC system, navigation system or telephone),

through grounds E17, E43 and F152 (without VDC system, navigation system and telephone).
With power and ground is supplied, front wiper motor operates at high speed.
INTERMITTENT OPERATION
Front wiper intermittent operation delay interval is determined from a combination of 3 switches (intermittent
operation dial position 1, 2, and 3) and vehicle speed signal.
After each intermittent operation delay interval, BCM sends front wiper request signal to IPDM E/R.

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FRONT WIPER AND WASHER SYSTEM
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Wiper Dial Position Setting
Example: For wiper dial position 1
Using combination switch reading function, BCM detects ON/OFF status of intermittent operation dial posi-
tions 1, 2, and 3.
When combination switch status is as listed below, BCM determines that it is wiper dial position 1.

Intermittent operation dial position 1: ON (Continuity exists between combination switch output 3 and input
1.)

Intermittent operation dial position 2: ON (Continuity exists between combination switch output 5 and input
1.)

Intermittent operation dial position 3: ON (Continuity exists between combination switch output 4 and input
2.)
BCM determines front wiper intermittent operation delay interval from wiper dial position 1 and vehicle speed,
and sends wiper request signal (INT) to IPDM E/R.
AUTO STOP OPERATION
With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base.
When the wiper arms are not located at base of windshield with wiper switch OFF, ground is provided

from IPDM E/R terminal 21

to front wiper motor terminal 3, in order to continue wiper motor operation at low speed
When the wiper arms reach base of windshield, front wiper motor terminals 1 and 4 are connected, and
ground is supplied

to IPDM E/R terminal 32

through front wiper motor terminals 1 and 4

through grounds E17, E43 and B102 (with VDC system, navigation system or telephone),

through grounds E17, E43 and F152 (without VDC system, navigation system and telephone).
Then the IPDM E/R sends auto stop operation signal to BCM with CAN communication.
When the BCM receives auto stop operation signal, BCM sends wiper stop signal to IPDM E/R with CAN com-
munication line. IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.
WASHER OPERATION
When the wiper switch is in front wiper washer position, BCM detect front wiper washer signal by BCM wiper
switch reading function (Refer to WW-7, "
COMBINATION SWITCH READING FUNCTION" ).
Combination switch ground is supplied

to front washer pump terminal 1

through combination switch terminal 11

to combination switch terminal 12

through grounds M30 and M66.
With ground is supplied, front washer pump is operated.
When the BCM detects that front washer pump has operated for 0.4 seconds or longer, BCM operates front
wiper motor for low speed.
When the BCM detects washer switch is OFF, low speed operation cycles approximately 2 times and stops.
Wiper dial positionIntermittent operation
intervalCombination switch
Intermittent operation
dial position 1Intermittent operation
dial position 2Intermittent operation
dial position 3
1 Short
↑
↓
LongON ON ON
2ONONOFF
3ONOFFOFF
4 OFF OFF OFF
5OFFOFFON
6 OFF ON ON
7 OFF ON OFF

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 November2007 350Z
BCM - Operation Table of Combination Switches
BCM reads operation status of combination switch using combinations shown in table below.
Sample Operation: (When Wiper Switch Turned to LOW Position)

When wiper switch is turned to LOW position, front wiper LOW contact in combination switch turns ON. At
this time if OUTPUT 1 transistor is activated, BCM detects that voltage changes in INPUT 3.

When BCM detects that voltage changes in INPUT 3 while OUTPUT 1 transistor is ON, it judges that front
wiper switch is in LOW position. Then BCM sends front wiper request signal (LO) to IPDM E/R using CAN
communication.

If BCM detects that voltage changes in INPUT 3 when OUTPUT 1 transistor is activated again, it recog-
nizes that wiper switch is still in LOW position.
PKIC4963E
PKIC4862E

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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