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WIPER, WASHER & HORN

K ELECTRICAL

SECTION
WIPER, WASHER & HORN
WW B

E
CONTENTS
PRECAUTION ........................................................... 3 . Five Times, They Become Inoperative) ................. 31 . F
Precautions for Supplemental Restraint System Front Wiper Does Not Return to Stop Position When
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Front Wiper Motor Operates at Low Speed (After
SIONER" ................................................................. 3
. Front Wiper Operate for 10 Seconds, They Stop for G
FRONT WIPER AND WASHER SYSTEM ................. 4 . 20 Seconds, and After Repeating the Operations
Components Parts and Harness Connector Loca- Five Times, They Become Inoperative) ................. 33 .
tion .......................................................................... 4
. Front Wiper Does Not Return to Stop Position When
H
System Description ................................................. 4 . Front Wiper Motor Operates at HIGH Speed (After
OUTLINE .............................................................. 4
. Front Wiper Operate for 10 Seconds, They Stop for
LOW SPEED WIPER OPERATION ..................... 5 . 20 Seconds, and After Repeating the Operations
HIGH SPEED WIPER OPERATION .................... 6 . Five Times, They Become Inoperative) ................. 34 . I
INTERMITTENT OPERATION ............................. 6 . Only Front Wiper LO Does Not Operate ................ 36 .
AUTO STOP OPERATION ................................... 7 . Only Front Wiper HI Does Not Operate ................. 38 .
WASHER OPERATION ........................................ 7 . Only Front Wiper Intermittent Does Not Operate ... 40 J
MIST OPERATION ............................................... 7 . Front Wiper Interval Time Is Not Controlled by Vehi-
FAIL-SAFE FUNCTION ........................................ 7 . cle Speed ............................................................... 41
.
COMBINATION SWITCH READING FUNCTION 8 ..... Front Wiper Intermittent Operation Switch Position
WW
CAN Communication System Description ..............11 . Cannot Be Adjusted ............................................... 41 .
CAN Communication Unit ......................................11 . Wiper Does Not Wipe When Front Washer Operates
Schematic ............................................................. 12. ... 42
Wiring Diagram -- WIPER -- ............................... 13 . Front Wiper Does Not Stop .................................... 42 . L
Terminals and Reference Values for BCM ............ 19 . Removal and Installation of Front Wiper Arms,
Terminals and Reference Values for IPDM E/R .... 23 . Adjustment of Wiper Arms Stop Location .............. 43 .
How to Perform Trouble Diagnoses ...................... 23 . REMOVAL .......................................................... 43
. M
Preliminary Check ................................................. 24 . INSTALLATION .................................................. 43 .
CHECK POWER SUPPLY AND GROUND CIR- ADJUSTMENT ................................................... 43 .
CUIT ................................................................... 24
. Removal and Installation of Front Wiper Drive
CONSULT-II Functions (BCM) .............................. 25 . Assembly ............................................................... 44
.
CONSULT-II BASIC OPERATION ...................... 25 . REMOVAL .......................................................... 44
.
WORK SUPPORT .............................................. 25 . INSTALLATION .................................................. 44 .
DATA MONITOR ................................................ 25 . Disassembly and Assembly of Front Wiper Drive
ACTIVE TEST .................................................... 26 . Assembly ............................................................... 44
.
CONSULT-II Functions (IPDM E/R) ...................... 27 . DISASSEMBLY .................................................. 45 .
CONSULT-II BASIC OPERATION ...................... 27 . ASSEMBLY ........................................................ 45.
DATA MONITOR ................................................ 27 . Washer Nozzle Adjustment ................................... 45 .
ACTIVE TEST .................................................... 27 . Washer Tube Layout ............................................. 46 .
Front Wiper Does Not Operate ............................. 28 . Removal and Installation of Front Washer Nozzle... 46
Front Wiper Does Not Return to Stop Position (After REMOVAL .......................................................... 46
.
Front Wiper Operate for 10 Seconds, They Stop for INSTALLATION .................................................. 46 .
20 Seconds, and After Repeating the Operations Inspection for Washer Nozzle ................................ 47 .

Revision: 2007 April WW-1 2007 M35/M45
CHECK VALVE INSPECTION ............................ 47 . POWER SOCKET ....................................................52 .
Inspection of Front Wiper and Washer Switch Circuit 47 ... Wiring Diagram -- P/SCKT -- ...............................52 .
Removal and Installation of Front Wiper and Washer Removal and Installation of Center Console Box
Switch .................................................................... 47
. Power Socket .........................................................53.
REMOVAL .......................................................... 47 . REMOVAL ...........................................................53 .
INSTALLATION ................................................... 47 . INSTALLATION ...................................................53 .
Removal and Installation of Washer Tank ............. 48 . Removal and Installation of Center Console Box
REMOVAL .......................................................... 48 . Rear Side Power Socket ........................................53 .
INSTALLATION ................................................... 48 . REMOVAL ...........................................................53 .
Removal and Installation of Washer Pump ............ 49 . INSTALLATION ...................................................53 .
REMOVAL .......................................................... 49 . HORN .......................................................................54
.
INSTALLATION ................................................... 49 . Wiring Diagram -- HORN -- .................................54 .
CIGARETTE LIGHTER ............................................ 50 . Removal and Installation ........................................55 .
Wiring Diagram -- CIGAR -- ................................ 50 . REMOVAL ...........................................................55 .
Removal and Installation ....................................... 51 . INSTALLATION ...................................................55 .
REMOVAL .......................................................... 51 .
INSTALLATION ................................................... 51 .

Revision: 2007 April WW-2 2007 M35/M45
PRECAUTION

PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NKS003WA

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G

Revision: 2007 April WW-3 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEM PFP:28810

Components Parts and Harness Connector Location NKS003WB

PKID0472E

System Description NKS003WC

q Front wiper relays (HIGH, LOW) are included in IPDM E/R (intelligent power distribution module engine
room).
q Front wiper reverse relay is included in relay box-1. Refer to PG-98, "ELECTRICAL UNITS LOCATION" .
q 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.
q BCM controls front wiper LO, HI, and INT (intermittent) operation.
q IPDM E/R operates wiper motor according to CAN communication signals from BCM.
q Front wiper motor switches LOW speed to/from HIGH speed by BCM function to change polarity.
OUTLINE
Power is supplied at all times
q to ignition relay, located in IPDM E/R, from battery directly,
q through 50 A fusible link (letter F, located in fuse and fusible link block)
q to BCM terminal 55,
q through 10 A fuse [No. 21, located in fuse block (J/B)]
q to BCM terminal 42,
q through 30 A fuse (No. 73, located in IPDM E/R)
q to front wiper low relay, located in IPDM E/R
q to front wiper reverse relay terminal 5,
q through 15 A fuse (No. 78, located in IPDM E/R)
Revision: 2007 April WW-4 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

q to CPU (central processing unit) located in IPDM E/R,
q through 15 A fuse (No. 71, located in IPDM E/R) A
q to CPU located in IPDM E/R.
With the ignition switch in the ON or START position, power is supplied
B
q to ignition relay, located in IPDM E/R,
q through 15 A fuse [No. 1, located in fuse block (J/B)]
q to BCM terminal 38, C
q through 10 A fuse [No. 12, located in fuse block (J/B)]
q to front wiper reverse relay terminal 1,
q through 10 A fuse (No. 84, located in IPDM E/R) D
q to front washer pump terminal 1
q to front wiper motor terminal 4.
Ground is supplied E
q to BCM terminal 52
q through grounds M16 and M70,
F
q to IPDM E/R terminals 38 and 51
q through grounds E22 and E43,
q to combination switch terminal 12 G
q through grounds M16 and M70.
LOW SPEED WIPER OPERATION
When wiper switch is in the LO position, BCM detects low speed wiper ON signal by BCM wiper switch read- H
ing function.
BCM sends front wiper request signal (LO) with CAN communication line
q from BCM terminals 39 and 40 I
q to IPDM E/R terminals 49 and 50.
When IPDM E/R receives front wiper request signal (LO), it turns ON front wiper low relay, located in IPDM
E/R, power is supplied J
q through IPDM E/R terminal 23 and front wiper high relay and front wiper low relay
q to front wiper motor terminal 3.
WW
Ground is supplied
q to front wiper motor terminal 1
q through front wiper reverse relay terminals 3 and 4 L
q through grounds E22 and E43.
With power and ground supplied, the front wiper motor operates at low speed.
M

Revision: 2007 April WW-5 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

HIGH SPEED WIPER OPERATION
When wiper switch is in the HI position, BCM detects high speed wiper ON signal by BCM wiper switch read-
ing function.
BCM sends front wiper request signal (HI) with CAN communication line
q from BCM terminals 39 and 40
q to IPDM E/R terminals 49 and 50.
When IPDM E/R receives front wiper request signal (HI), it turns ON front wiper high relay (located in IPDM
E/R) and front wiper reverse relay (located in relay box-1), power is supplied
q through IPDM E/R terminal 19
q through front wiper reverse relay terminals 5 and 3
q to front wiper motor terminal 1.
Ground is supplied
q to front wiper motor terminal 2
q to IPDM E/R terminal 31 and front wiper high relay and front wiper low relay
q to IPDM E/R terminal 38
q through grounds E22 and E43.
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
1. BCM detects ON/OFF status of intermittent operation dial position 1, 2 and 3 switched by wiper dial posi-
tion to judge wiper dial position status.
2. BCM calculates intermittent operation interval time (second) from the vehicle speed signal received by
combination meter through CAN communication line and the wiper dial position.
Unit: second
Vehicle speed; approx.
Vehicle speed approx.
Intermittent operation 5 km/h (3.1 MPH) or
Wiper dial position Stopped 65 km/h (40.4 MPH)
interval time more to approx. 65 km/h
or more
(40.4 MPH)
1 1 0.4 0.2
Short
2 2.5 1 0.6
3 5 2 1.2

4 7.5 3 1.8

5 12.5 5 3
6 25 10 6
Long
7 40 16 9.6
NOTE:
The value in the table can differ from the actual vehicle speed.
3. BCM switches front wiper request signal transmitted to IPDM E/R through CAN communication line from
STOP to LO once at intervals of intermittent operation time.
4. IPDM E/R receives front wiper request signal (LO) once to turn ON front wiper main relay located in IPDM
E/R. Then operates front wiper. IPDM E/R receives front wiper auto stop signal (stop) input from front
wiper motor to turn OFF front wiper motor relay. IPDM E/R switches front wiper auto stop signal transmit-
ted through CAN communication line from MOVE to STOP.
5. BCM receives front wiper auto stop signal (stop) to operate timer that determines intermittent operation
interval time till next front wiper motor operation.

Revision: 2007 April WW-6 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

AUTO STOP OPERATION
With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base. A
When wiper arms are not located at base of windshield with wiper switch OFF, ground is provided
q from IPDM E/R terminal 23
q to front wiper motor terminal 3, in order to continue wiper motor operation at low speed. B
When wiper arms reach base of windshield, front wiper motor terminals 4 and 5 are connected
q to IPDM E/R terminal 32
C
q through front wiper motor terminals 4 and 5.
Then the IPDM E/R sends auto stop operation signal to BCM with CAN communication line.
When BCM receives auto stop operation signal, BCM sends wiper stop signal to IPDM E/R with CAN commu-
D
nication line.
IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.
WASHER OPERATION E
When wiper switch is in front wiper washer position with ignition switch ON, BCM detects front wiper washer
signal by BCM wiper switch reading function (refer to BCS-3, "COMBINATION SWITCH READING FUNC-
TION" ). Combination switch ground is supplied
F
q to front washer pump terminal 2
q through combination switch terminal 14
q to combination switch terminal 12 G
q through grounds M16 and M70.
With power and ground supplied, front washer pump is operated.
When BCM detects that front washer pump has operated for 0.4 seconds or longer, BCM operates front wiper H
motor for low speed.
When BCM detects washer switch is OFF, low speed operation cycles approximately 2 times and stops.
MIST OPERATION I
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" . J
If the switch is held in the 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 WW
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 LOW until ignition switch is turned OFF.)
L

Revision: 2007 April WW-7 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

COMBINATION SWITCH READING FUNCTION
Description
q BCM reads combination switch (wiper) status, and controls front wipers according to the results.
q 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
q BCM activates transistors of output terminals (OUTPUT 1-5) periodically and allows current to flow in turn.
q If any (one or more) switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input terminals
(INPUT 1-5) becomes active.
q At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects volt-
age change, and BCM determines that the switch is ON.

PKID0470E

BCM - Operation Table of Combination Switches
q BCM reads operation status of combination switch using combinations shown in table below.

PKIC0276E

Revision: 2007 April WW-8 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

Sample Operation: (When Wiper Switch Turned to LO Position)
q When wiper switch is turned to LO position, front wiper LO contact in combination switch turns ON. At this A
time if OUTPUT 1 transistor is activated, BCM detects that voltage changes in INPUT 3.
q When BCM detects that voltage changes in INPUT 3 while OUTPUT 1 transistor is ON, it judges that front
wiper switch is in LO position. Then BCM sends front wiper request signal (LO) to IPDM E/R using CAN B
communication.
q 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 LO position. C

PKID0469E
I
NOTE:
Each OUTPUT terminal transistor is activated at 10 ms intervals. Therefore after switch is turned ON, electri-
cal loads are activated with time delay. But this time delay is so short that it cannot be detected by human
J
senses.

Revision: 2007 April WW-9 2007 M35/M45
FRONT WIPER AND WASHER SYSTEM

Operation Mode
Combination switch reading function has operation modes shown below.
1. Normal status

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