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K ELECTRICAL

B
SECTION
WIPER, WASHER & HORN C

E
CONTENTS
PRECAUTION ........................................................... 3 . ONLY FRONT WIPER INT DOES NOT OPER- F
Precautions for Supplemental Restraint System ATE ..................................................................... 23
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- FRONT WIPER INTERMITTENT OPERATION
SIONER" ................................................................. 3
. SWITCH POSITION CANNOT BE ADJUSTED... 24 G
FRONT WIPER AND WASHER SYSTEM ................. 4 . WIPERS DO NOT WIPE WHEN FRONT
Components Parts and Harness Connector Loca- WASHER OPERATES ....................................... 24 .
tion .......................................................................... 4
. FRONT WIPERS OPERATE FOR 10 SECONDS,
H
System Description ................................................. 4 . STOP FOR 20 SECONDS, AND AFTER
LOW SPEED WIPER OPERATION ..................... 5 . REPEATING THIS OPERATION FIVE TIMES,
HI SPEED WIPER OPERATION .......................... 5 . THEY BECOME INOPERATIVE ........................ 24 .
INTERMITTENT OPERATION ............................. 5 . Removal and Installation ....................................... 26 . I
AUTO STOP OPERATION ................................... 6 . FRONT WIPER ARMS ....................................... 26 .
WASHER OPERATION ........................................ 6 . WIPER ARM ADJUSTMENT AFTER INSTALLA-
MIST OPERATION ............................................... 6 . TION ................................................................... 26
. J
FAIL-SAFE FUNCTION ........................................ 6 . Removal and Installation ....................................... 27 .
COMBINATION SWITCH READING FUNCTION 7 ..... WIPER MOTOR AND LINKAGE ........................ 27 .
CAN Communication System Description ............... 7 . REMOVAL .......................................................... 27 . WW
Wiring Diagram -- WIPER -- ................................. 8 . INSTALLATION .................................................. 27 .
Terminals and Reference Values for BCM ............ 10 . Washer Nozzle Adjustment ................................... 28 .
Terminals and Reference Values for IPDM E/R .....11 . Washer Tube Layout ............................................. 28 .
Work Flow ..............................................................11. Removal and Installation ....................................... 29 . L
Preliminary Inspection ............................................11 . WIPER AND WASHER SWITCH ....................... 29 .
INSPECTION FOR POWER SUPPLY AND Removal and Installation ....................................... 29 .
GROUND CIRCUIT .............................................11 . WASHER FLUID RESERVOIR .......................... 29 . M
CONSULT-II Function (BCM) ................................ 13 . INSTALLATION .................................................. 29 .
CONSULT-II OPERATION ................................. 13 . Removal and Installation of Washer Motor ............ 29 .
DATA MONITOR ................................................ 14 . REMOVAL .......................................................... 29 .
ACTIVE TEST .................................................... 14 . INSTALLATION .................................................. 30 .
CONSULT-II Function (IPDM E/R) ........................ 15 . CIGARETTE LIGHTER ............................................ 31 .
CONSULT-II OPERATION ................................. 15 . Wiring Diagram -- CIGAR -- ................................ 31 .
DATA MONITOR ................................................ 16 . Removal and Installation ....................................... 32 .
ACTIVE TEST .................................................... 16 . REMOVAL .......................................................... 32 .
Trouble Diagnosis ................................................. 17 . INSTALLATION .................................................. 32 .
FRONT WIPER DOES NOT OPERATE ............ 17 . POWER SOCKET .................................................... 33 .
FRONT WIPER STOP POSITION IS INCOR- Wiring Diagram -- P/SCKT -- ............................... 33 .
RECT ................................................................. 20
. Removal and Installation ....................................... 34 .
ONLY FRONT WIPER LOW DOES NOT OPER- REMOVAL .......................................................... 34 .
ATE .................................................................... 22
. INSTALLATION .................................................. 34 .
ONLY FRONT WIPER HI DOES NOT OPERATE 22 ... HORN ....................................................................... 35
.

Revision: July 2005 WW-1 2006 Altima
Wiring Diagram -- HORN -- ................................. 35 .
Removal and Installation ....................................... 36
.
HORN HIGH ....................................................... 36
.
HORN LOW ........................................................ 36
.

Revision: July 2005 WW-2 2006 Altima
PRECAUTION

PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS008QF

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: July 2005 WW-3 2006 Altima
FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEM PFP:28810

Components Parts and Harness Connector Location EKS008QH

WKIA4516E

: Vehicle front
1. Fuse block (J/B) 2. Fuse and fusible link box 3. IPDM E/R fuse layout
4. BCM 5. Front wiper motor 6. Front washer motor
M18, M19, M20 E23 E105
7. IPDM E/R
E118, E119, E120, E121, E122, E123,
E124

System Description EKS008QI

q Both front wiper relays are located in the IPDM E/R (intelligent power distribution module engine room)
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)
q BCM controls front wiper LO, HI, and INT (intermittent) operation
q IPDM E/R operates the wiper motor according to CAN communication signals from the BCM.
Power is supplied at all times
q to ignition relay, located in the IPDM E/R, and
Revision: July 2005 WW-4 2006 Altima
FRONT WIPER AND WASHER SYSTEM

q through 50A fusible link (letter f , located in the fuse and fusible link box)
q to BCM terminal 70, and A
q through 20A fuse (No. 39, located in the IPDM E/R)
q to front wiper relay, located in the IPDM E/R.
B
With the ignition switch in ON or START position, power is supplied at all times
q through 10A fuse [No. 1, located in the fuse block (J/B)]
q to BCM terminal 38, and C
q to ignition relay, located in the IPDM E/R, and
q through 10A fuse (No. 47, located in the IPDM E/R)
q through IPDM E/R terminal 44 D
q to front washer motor terminal 1.
Ground is supplied
q to BCM terminal 67 and E
q to combination switch terminal 9
q through grounds F14, M57 and M61, and
F
q to IPDM E/R terminals 38 and 60 and
q to front wiper motor terminal E
q through grounds E15 and E24. G
LOW SPEED WIPER OPERATION
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. H
BCM then sends front wiper (low) request signal over CAN communication lines
q from BCM terminals 39 and 40
q to IPDM E/R terminals 48 and 49. I
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
q through front wiper relay J
q to front wiper HI relay
q through IPDM E/R terminal 21
WW
q to front wiper motor terminal L.
With power and ground supplied, the front wiper motor operates at low speed.
HI SPEED WIPER OPERATION L
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.
BCM then sends front wiper (high) request signal over CAN communication lines M
q from BCM terminals 39 and 40
q to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper (high) request signal, it supplies ground to energize the front wiper and
the front wiper HI relays.
With the front wiper and the front wiper HI relays energized, power is supplied
q through front wiper relay
q to front wiper HI relay
q through IPDM E/R terminal 31
q to front wiper motor terminal H.
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.

Revision: July 2005 WW-5 2006 Altima
FRONT WIPER AND WASHER SYSTEM

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
q from BCM terminals 39 and 40
q 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.
q BCM detects ON/OFF status of intermittent wiper dial position
q BCM calculates operation interval from wiper dial position and vehicle speed signal received through CAN
communications
q 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 E and P are connected.
Ground is supplied
q to IPDM E/R terminal 32
q through front wiper motor terminal P
q through front wiper motor terminal E
q through grounds 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.
WASHER OPERATION
When wiper switch is in front wiper washer position, BCM detects front wiper washer signal by BCM wiper
switch reading function. Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
When the ignition switch is in ON or START position, power is supplied
q through 10A fuse (No. 47, located in the IPDM E/R)
q through IPDM E/R terminal 44
q to front washer motor terminal 1.
When front wiper switch is turned to washer position, ground is supplied
q to front washer motor terminal 2
q through combination switch terminal 3
q through combination switch terminal 9
q through grounds F14, M57 and M61.
With ground supplied, the front washer motor is operated.
When BCM detects that front washer motor has operated for 0.4 seconds or longer, BCM uses CAN commu-
nication and sends wiper request signal to IPDM E/R for low speed operation of wipers.
When BCM detects that washer switch is OFF, low speed operation cycles approximately 3 times and then
stops.
MIST OPERATION
When the wiper switch is temporarily placed in 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 the switch is held in the mist position, low speed operation continues.
FAIL-SAFE FUNCTION
BCM includes fail-safe function to prevent malfunction of electrical components controlled by CAN communi-
cations if a malfunction in CAN communications occurs.

Revision: July 2005 WW-6 2006 Altima
FRONT WIPER AND WASHER SYSTEM

BCM uses CAN communications to stop output of electrical components it controls.
Until ignition switch is turned off, front wiper remains in same status as just before fail-safe control was initi- A
ated. (If wiper was in low speed operation just before fail-safe, it continues low speed operation until ignition
switch is turned OFF.)
When fail-safe status is initiated, BCM remains in standby until normal signals are received.
B
When normal signals are received, fail-safe status is canceled.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" . C
CAN Communication System Description EKS008QJ

Refer to LAN-20, "CAN COMMUNICATION" . D

Revision: July 2005 WW-7 2006 Altima
FRONT WIPER AND WASHER SYSTEM

Wiring Diagram -- WIPER -- EKS008QK

WKWA2908E

Revision: July 2005 WW-8 2006 Altima
FRONT WIPER AND WASHER SYSTEM

WKWA1348E

Revision: July 2005 WW-9 2006 Altima
FRONT WIPER AND WASHER SYSTEM

Terminals and Reference Values for BCM EKS008QL

Measuring condition
Terminal Wire Reference Value (V)
Signal name Ignition
No. color Operation or condition (Approx.)
switch

q Light switch and wiper switch OFF
2 L Combination switch input 5 ON
q Wiper dial position 4

SKIA5291E

q Light switch and wiper switch OFF
3 R/Y Combination switch input 4 ON
q Wiper dial position 4

SKIA5292E

q Light switch and wiper switch OFF
4 R/G Combination switch input 3 ON
q Wiper dial position 4

SKIA5291E

5 R/B Combination switch input 2

q Light switch and wiper switch OFF
ON
6 R/W Combination switch input 1 q Wiper dial position 4

SKIA5292E

q Light switch and wiper switch OFF
32 L/W Combination switch output 5 ON
q Wiper dial position 4

SKIA5291E

q Light switch and wiper switch OFF
33 G/Y Combination switch output 4 ON
q Wiper dial position 4

SKIA5292E

q Light switch and wiper switch OFF
34 G/R Combination switch output 3 ON
q Wiper dial position 4

SKIA5291E

Revision: July 2005 WW-10 2006 Altima
FRONT WIPER AND WASHER SYSTEM

Measuring condition
Terminal Wire Reference Value (V) A
Signal name Ignition
No. color Operation or condition (Approx.)
switch
35 G/B Combination switch output 2
B

q Light switch and wiper switch OFF
ON
36 G/W Combination switch output 1 q Wiper dial position 4
C

SKIA5292E

38 R Ignition switch (ON) ON -- Battery D
39 L CAN-H ON -- --
40 P CAN-L ON -- --
E
67 B Ground -- -- 0
70 W/B Battery power OFF -- Battery

Terminals and Reference Values for IPDM E/R EKS008QM
F

Measuring condition
Terminal Wire Reference value (V)
Signal name Ignition G
No. color Operation or condition (Approx.)
switch
OFF 0
21 L Low speed signal ON Wiper switch
LO Battery H
OFF 0
31 L/B High speed signal ON Wiper switch
HI Battery
I
Wiper operating Battery
32 L/Y Wiper auto stop signal ON
Wiper stopped 0
38 B Ground -- -- 0 J
44 R/W Front washer motor power ON -- Battery
48 L CAN-H ON -- --
WW
49 P CAN-L ON -- --
60 B Ground -- -- 0

L
Work Flow EKS008QN

1. Confirm the symptom or customer complaint.
2. Understand the system description, refer to WW-4, "System Description" . M
3. Perform preliminary inspection, refer to WW-11, "Preliminary Inspection" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does wiper function operate normally? If it operates normally, GO TO 6. If not, GO TO 4.
6. Inspection End.
Preliminary Inspection EKS008QO

INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
Inspection procedure
1. CHECK FUSE
Check if wiper or washer fuse is blown.
Unit Power source Fuse No.
Front washer motor Ignition ON or START 47
Front wiper relay Battery 39

Revision: July 2005 WW-11 2006 Altima
FRONT WIPER AND WASHER SYSTEM

Unit Power source Fuse No.
Ignition ON or START 1
BCM
Battery f

OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .

2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector terminals and
ground.
BCM Ignition switch position
(+) (

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