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K ELECTRICAL

SECTION
WIPER, WASHER & HORN
WW B

E
CONTENTS
PRECAUTION ........................................................... 3 . Front Wipers Operate For 10 Seconds, Stop For 20 F
Precautions for Supplemental Restraint System Seconds, And After Repeating This Operation Five
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Times, They Become Inoperative .......................... 21 .
SIONER" ................................................................. 3
. Front Wiper Arms .................................................. 23 . G
FRONT WIPER AND WASHER SYSTEM ................. 4 . REMOVAL .......................................................... 23 .
Components Parts and Harness Connector Loca- INSTALLATION .................................................. 23 .
tion .......................................................................... 4
. ADJUSTMENT AFTER INSTALLATION ............ 23 .
H
System Description ................................................. 4 . Wiper Motor and Linkage ...................................... 24 .
LOW SPEED WIPER OPERATION ..................... 5 . COMPONENTS .................................................. 24 .
HI SPEED WIPER OPERATION .......................... 5 . REMOVAL .......................................................... 24 .
INTERMITTENT OPERATION ............................. 5 . INSTALLATION .................................................. 24 . I
AUTO STOP OPERATION ................................... 6 . Washer Nozzle ...................................................... 25 .
FRONT WASHER OPERATION .......................... 6 . INSPECTION ..................................................... 25 .
MIST OPERATION ............................................... 6 . ADJUSTMENT ................................................... 25 . J
FAIL-SAFE FUNCTION ........................................ 6 . Washer Tube Layout ............................................. 27 .
COMBINATION SWITCH READING FUNCTION 7 ..... Wiper and Washer Switch ..................................... 27 .
CAN Communication System Description ............... 7 . REMOVAL .......................................................... 27 .
WW
Schematic ............................................................... 8
. INSTALLATION .................................................. 27 .
Wiring Diagram -- WIPER -- ................................. 9 . Washer Fluid Reservoir ......................................... 27 .
Terminals and Reference Values for BCM ............ 12 . REMOVAL .......................................................... 27 .
Terminals and Reference Values for IPDM E/R .... 12 . INSTALLATION .................................................. 28 . L
Work Flow ............................................................. 12. Washer Motor ........................................................ 28 .
BCM Power Supply and Ground Circuit Check ..... 12 . REMOVAL .......................................................... 28 .
CONSULT-II Function (BCM) ................................ 12 . INSTALLATION .................................................. 28 . M
CONSULT-II START PROCEDURE ................... 12 . REAR WIPER AND WASHER SYSTEM ................. 29 .
WORK SUPPORT .............................................. 12 . Components Parts and Harness Connector Loca-
DATA MONITOR ................................................ 13 . tion ......................................................................... 29
.
ACTIVE TEST .................................................... 13 . System Description ................................................ 29 .
CONSULT-II Function (IPDM E/R) ........................ 13 . REAR WIPER OPERATION ............................... 30 .
CONSULT-II START PROCEDURE ................... 14 . INTERMITTENT OPERATION ........................... 30 .
DATA MONITOR ................................................ 14 . AUTO STOP OPERATION ................................. 30 .
ACTIVE TEST .................................................... 14 . REAR WASHER OPERATION ........................... 30 .
Front Wiper Does Not Operate ............................. 14 . BCM WIPER SWITCH READING FUNCTION ... 31
Front Wiper Stop Position Is Incorrect ................... 18 . Wiring Diagram -- WIP/R -- ................................. 32 .
Only Front Wiper Low Does Not Operate ............. 19 . Terminals and Reference Values for BCM ............. 34 .
Only Front Wiper High Does Not Operate ............. 19 . Terminals and Reference Values for IPDM E/R ..... 34 .
Only Front Wiper Intermittent Does Not Operate ... 21 How to Proceed With Trouble Diagnosis ............... 34 .
Front Wiper Intermittent Operation Switch Position Preliminary Check ................................................. 34 .
Cannot Be Adjusted .............................................. 21 . BCM POWER SUPPLY AND GROUND CICUIT 34 ...
Wipers Do Not Wipe When Front Washer Operates 21 ... CONSULT-II Function (BCM) ................................ 35 .

Revision: March 2006 WW-1 2007 Quest
CONSULT-II START PROCEDURE ................... 35 . REMOVAL AND INSTALLATION ........................42 .
DATA MONITOR ................................................. 35 . Rear Wiper and Washer Switch .............................43 .
ACTIVE TEST .................................................... 36. Washer Fluid Reservoir ..........................................43 .
Rear Wiper Does Not Operate .............................. 36 . Washer Motor .........................................................43 .
Rear Wiper Stop Position Is Incorrect .................... 38 . POWER SOCKET ....................................................44 .
Only Rear Wiper Does Not Operate ...................... 39 . Wiring Diagram -- P/SCKT -- ...............................44 .
Only Rear Wiper Intermittent Does Not Operate ... 39 Front Power Socket - 1 (LH) and Rear Power Socket
Wiper Does Not Wipe When Rear Washer Operates 39 ... (Cargo) ...................................................................45
.
Rear Wiper Arm ..................................................... 40
. REMOVAL AND INSTALLATION ........................45 .
REMOVAL .......................................................... 40
. Front Power Socket - 2 (RH) and Rear Power Socket
INSTALLATION ................................................... 40. (2nd Row) ..............................................................45
.
Rear Wiper Motor .................................................. 40
. REMOVAL AND INSTALLATION ........................45 .
REMOVAL AND INSTALLATION ........................ 40 . INSTALLATION ..................................................45 .
Rear Washer Nozzle Adjustment ........................... 41 . HORN .......................................................................46
.
Rear Washer Tube Layout ..................................... 42 . Wiring Diagram -- HORN -- .................................46 .
Rear Washer Nozzle .............................................. 42. Horn .......................................................................47
.
REMOVAL AND INSTALLATION ........................ 42 . REMOVAL AND INSTALLATION ........................47 .
Check Valve ........................................................... 42
. INSTALLATION ...................................................47 .

Revision: March 2006 WW-2 2007 Quest
PRECAUTION

PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00FGF

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
G 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
G 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
G 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: March 2006 WW-3 2007 Quest
FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEM PFP:28810

Components Parts and Harness Connector Location EKS00FGH

WKIA5246E

*1 IPDM E/R E118, E119, E120, E121, *2 Washer fluid reservoir (view with *3 Front and rear washer motor E105
E122, E123, and E124 right fender protector RH removed) (view with right fender protector RH
removed)
*4 Front wiper motor E23 (view with *5 BCM M18, M19, and M20 (view with *6 Combination switch (wiper switch)
cowl top cover removed) instrument panel removed) M28

System Description EKS00FGI

G Both front wiper relays are located in the IPDM E/R (intelligent power distribution module engine room).
G 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.
G BCM controls front wiper LO, HI, and INT (intermittent) operation.
G IPDM E/R operates the wiper motor according to CAN communication signals from the BCM.
Power is supplied at all times
G through 50A fusible link (letter j , located in the fuse and fusible link box)
G to BCM terminal 70, and
G to ignition relay, and
G through 15A fuse (No. 34, located in the IPDM E/R)
G to CPU (central processing unit) of IPDM E/R, and
G through 15A fuse (No. 41, located in the IPDM E/R)
G to CPU (central processing unit) of IPDM E/R, and
G through 30A fuse (No. 39, located in the IPDM E/R)
G to front wiper relay, located in the IPDM E/R.
With the ignition switch in ON or START position, power is supplied
G to ignition relay, and
G through 10A fuse [No. 16, located in the fuse block (J/B)]
Revision: March 2006 WW-4 2007 Quest
FRONT WIPER AND WASHER SYSTEM

G to BCM terminal 38, and
G through 10A fuse (No. 47, located in the IPDM E/R) A
G through IPDM E/R terminal 44
G to combination switch terminal 14.
B
Ground is supplied
G to BCM terminal 67 and
G to combination switch terminal 12 C
G through grounds M57, M61 and M79, and
G to IPDM E/R terminals 38 and 60 and
G to front wiper motor terminal 1 D
G through grounds E9, E15 and E24.
LOW SPEED WIPER OPERATION
E
When the ignition switch is in the ON or START position, and the front wiper switch is turned to low position,
the BCM detects a low speed wiper ON signal by BCM wiper switch reading function.
BCM then sends front wiper (low) request signal over CAN communication lines
G from BCM terminals 39 and 40 F
G to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper (low) request signal, it supplies ground to energize the front wiper relay.
With the front wiper relay energized, power is supplied G
G through front wiper relay
G to front wiper high relay
H
G through IPDM E/R terminal 21
G to front wiper motor terminal 3.
With power and ground supplied, the front wiper motor operates at low speed. I
HI SPEED WIPER OPERATION
When the ignition switch is in the ON or START position, and the front wiper switch is turned to high position,
the BCM detects a high speed wiper ON signal by BCM wiper switch reading function. J
BCM then sends front wiper (high) request signal over CAN communication lines
G from BCM terminals 39 and 40
G to IPDM E/R terminals 48 and 49. WW
When IPDM E/R receives front wiper (high) request signal, it supplies ground to energize the front wiper and
the front wiper high relays.
With the front wiper and the front wiper high relays energized, power is supplied L
G through front wiper relay
G to front wiper high relay
M
G through IPDM E/R terminal 31
G to front wiper motor terminal 2.
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
Wiper intermittent operation delay interval is determined from the combination of the intermittent wiper dial
position inputs and vehicle speed. During each intermittent operation delay interval, the BCM sends a front
wiper request signal to the IPDM E/R to operate the wipers.
When the ignition switch is in ON or START position, and the front wiper switch is turned to intermittent posi-
tion, the BCM detects a front wiper (intermittent) ON signal by BCM wiper switch reading function.
BCM then sends front wiper (intermittent) request signal over CAN communication lines
G from BCM terminals 39 and 40
G to IPDM E/R terminals 48 and 49.
When BCM determines that combination switch status is front wiper intermittent ON, it performs the following
operations.
G BCM detects ON/OFF status of intermittent wiper dial position.

Revision: March 2006 WW-5 2007 Quest
FRONT WIPER AND WASHER SYSTEM

G BCM calculates operation interval from wiper dial position and vehicle speed signal received through CAN
communications.
G BCM sends front wiper request signal (INT) to IPDM E/R at calculated operation interval.
When IPDM E/R receives front wiper request signal (INT), it supplies ground to energize the front wiper relay.
It then sends auto-stop signal to BCM, and conducts intermittent front wiper motor operation.
AUTO STOP OPERATION
When the wiper arms are not located at the base of the windshield, and the wiper switch is turned OFF, the
wiper motor will continue to operate until the wiper arms reach windshield base. When wiper arms reach base
of windshield, front wiper motor terminals 1 and 4 are connected.
Ground is supplied
G to IPDM E/R terminal 32
G through front wiper motor terminal 4
G through front wiper motor terminal 1
G through grounds E9, E15 and E24.
The IPDM E/R sends auto stop operation signal to BCM through CAN communication lines.
When BCM receives auto stop operation signal, BCM sends wiper stop signal to IPDM E/R with CAN commu-
nication lines. The IPDM E/R then de-energizes the front wiper relay.
Wiper motor will then stop wiper arms at the STOP position.
FRONT WASHER OPERATION
When the ignition switch is in the ON or START position, and the front and rear washer switches are OFF, the
front and rear washer motor is supplied power
G through 10A fuse (No. 47, located in the IPDM E/R)
G through IPDM E/R terminal 44
G through combination switch (wiper switch) terminal 14
G through combination switch (wiper switch) terminal 13
G to front and rear washer motor terminal

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