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K ELECTRICAL

B
SECTION
WIPER, WASHER & HORN C

E
CONTENTS
PRECAUTION ........................................................... 2 . Front Wiper Stop Position Is Incorrect ................... 17 . F
Precautions for Supplemental Restraint System Only Front Wiper Low Does Not Operate .............. 18 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Only Front Wiper High Does Not Operate ............. 18 .
SIONER" ................................................................. 2
. Only Front Wiper INT Does Not Operate ............... 20 . G
Wiring Diagrams and Trouble Diagnosis ................. 2 . Front Wiper INT Operation Switch Position Cannot
FRONT WIPER AND WASHER SYSTEM ................. 3 . Be Adjusted ........................................................... 20.
Components Parts and Harness Connector Loca- Wipers Do Not Wipe When Front Washer Operates 20 ...
H
tion .......................................................................... 3
. Front Wipers Operate For 10 Seconds, Stop For 20
System Description ................................................. 3 . Seconds, And After Repeating This Operation Five
LOW SPEED WIPER OPERATION ..................... 4 . Times, They Become Inoperative .......................... 21 .
HI SPEED WIPER OPERATION .......................... 4 . Removal and Installation of Front Wiper Arms, I
INTERMITTENT OPERATION ............................. 4 . Adjustment of Wiper Arms Stop Location .............. 22 .
AUTO STOP OPERATION ................................... 5 . Removal and Installation of Wiper Motor and Link-
WASHER OPERATION ........................................ 5 . age ......................................................................... 23
. J
MIST OPERATION ............................................... 5 . REMOVAL .......................................................... 23 .
FAIL-SAFE FUNCTION ........................................ 5 . INSTALLATION .................................................. 23 .
COMBINATION SWITCH READING FUNCTION 5 ..... Washer Nozzle Adjustment ................................... 24 . WW
CAN Communication System Description ............... 5 . Washer Tube Layout ............................................. 24 .
Wiring Diagram -- WIPER -- ................................. 6 . Removal and Installation of Wiper and Washer
Terminals and Reference Values for BCM .............. 8 . Switch .................................................................... 24
.
Terminals and Reference Values for IPDM E/R ...... 9 . Removal and Installation of Washer Tank ............. 24 . L
Work Flow ............................................................... 9
. Removal and Installation of Washer Motor ............ 25 .
Preliminary Inspection ........................................... 10 . POWER SOCKET .................................................... 26 .
INSPECTION FOR POWER SUPPLY AND Wiring Diagram -- P/SCKT -- ............................... 26 . M
GROUND CIRCUIT ............................................ 10 . Removal and Installation of Power Sockets .......... 27 .
CONSULT-II Function (BCM) .................................11 . REMOVAL .......................................................... 27 .
CONSULT-II OPERATION ..................................11 . INSTALLATION .................................................. 27 .
DATA MONITOR ................................................ 12 . HORN ....................................................................... 28
.
ACTIVE TEST .................................................... 12 . Wiring Diagram -- HORN -- ................................. 28 .
CONSULT-II Function (IPDM E/R) ........................ 13 . Removal and Installation ....................................... 29 .
CONSULT-II OPERATION ................................. 13 . REMOVAL (HORN HIGH) .................................. 29 .
DATA MONITOR ................................................ 14 . INSTALLATION (HORN HIGH) .......................... 29 .
ACTIVE TEST .................................................... 14 . REMOVAL (HORN LOW) ................................... 29 .
Front Wiper Does Not Operate ............................. 15 . INSTALLATION (HORN LOW) ........................... 29 .

Revision: July 2005 WW-1 2005 Maxima
PRECAUTION

PRECAUTION PFP:00011

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS0094G

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
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
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:
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.
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.
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.
Wiring Diagrams and Trouble Diagnosis EKS0094H

When you read wiring diagrams, refer to the following:
q Refer to GI-13, "How to Read Wiring Diagrams" .
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When you perform trouble diagnosis, refer to the following:
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" .
q Refer to GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident" .

Revision: July 2005 WW-2 2005 Maxima
FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEM PFP:28810
A
Components Parts and Harness Connector Location EKS0094I

WKIA3132E
M
System Description EKS0094J

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) 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 the BCM.
Power is supplied at all times
q through 50A fusible link (letter f , located in the fuse and fusible link box)
q to BCM terminal 55, and
q through 20A fuse (No. 39, located in the IPDM E/R)
q to front wiper relay (located in the IPDM E/R).
With the ignition switch in ON or START position, power is supplied
q through 10A fuse [No. 1, located in the fuse block (J/B)]
q to BCM terminal 38, and

Revision: July 2005 WW-3 2005 Maxima
FRONT WIPER AND WASHER SYSTEM

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 +.
Ground is supplied
q to BCM terminal 52
q to combination switch terminal 12
q through grounds M57, M61 and M79, and
q to IPDM E/R terminals 38 and 60
q to front wiper motor terminal E
q through grounds E15 and E24.
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.
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.
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
q to front wiper high relay
q through IPDM E/R terminal 21
q to front wiper motor terminal L.
With power and ground supplied, the front wiper motor operates at low speed.
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.
BCM then sends front wiper (high) request signal over CAN communication lines
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 high relays.
With the front wiper and the front wiper high relays energized, power is supplied
q through front wiper relay
q to front wiper high 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.
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 from unified
meter and A/C amp. through CAN communications.

Revision: July 2005 WW-4 2005 Maxima
FRONT WIPER AND WASHER SYSTEM

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. A
It then sends auto-stop signal to BCM and conducts intermittent front wiper motor operation.
AUTO STOP OPERATION
B
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 P and E are connected.
Ground is supplied C
q to terminal 32 of the IPDM E/R
q through front wiper motor terminal P
D
q through terminal E of the front wiper motor
q through grounds E15 and E24.
The IPDM E/R sends auto stop operation signal to BCM through CAN communication lines.
E
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.
F
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 G
q through 10A fuse (No. 47, located in the IPDM E/R)
q through IPDM E/R terminal 44 H
q to front washer motor terminal +.
When front wiper switch is placed in washer position, ground is supplied
q to front washer motor terminal

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