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WIPER, WASHER & HORN

K ELECTRICAL

SECTION
WIPER, WASHER & HORN
WW B

E
CONTENTS
PRECAUTION ........................................................... 3 . onds, and After Repeating the Operations Five F
Precautions for Supplemental Restraint System Times, They Become Inoperative) ......................... 28 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Only Front Wiper LO Does Not Operate ................ 29 .
SIONER" ................................................................. 3
. Only Front Wiper HI Does Not Operate ................. 31 . G
Wiring Diagrams and Trouble Diagnosis ................. 3 . Only Front Wiper INT Does Not Operate ............... 32 .
FRONT WIPER AND WASHER SYSTEM ................. 4 . Front Wiper Intermittent Operation Switch Position
Components Parts and Harness Connector Loca- Cannot Be Adjusted ............................................... 33 .
H
tion .......................................................................... 4
. Front Wiper Interval Time Is Not Controlled by Vehi-
System Description ................................................. 4 . cle Speed ............................................................... 33
.
LOW SPEED WIPER OPERATION ..................... 5 . Wipers Do Not Wipe When Front Washer Operates 33 ...
HI SPEED WIPER OPERATION .......................... 5 . Removal and Installation of Front Wiper Arms, I
INTERMITTENT OPERATION ............................. 6 . Adjustment of Wiper Arms Stop Location .............. 34 .
AUTO STOP OPERATION ................................... 6 . REMOVAL .......................................................... 34 .
FRONT WASHER OPERATION .......................... 6 . INSTALLATION .................................................. 34 . J
MIST OPERATION ............................................... 7 . Removal and Installation of Wiper Motor and Link-
FAIL-SAFE FUNCTION ........................................ 7 . age ......................................................................... 35
.
COMBINATIONSWITCHREADING FUNCTION 8 ..... REMOVAL .......................................................... 35 .
WW
CAN Communication System Description ............. 10 . INSTALLATION .................................................. 35 .
Schematic ..............................................................11. Washer Nozzle Adjustment ................................... 36 .
Wiring Diagram -- WIPER -- ............................... 12 . Washer Tube Layout ............................................. 36 .
Terminals and Reference Values for BCM ............ 15 . Removal and Installation of Wiper and Washer L
Terminals and Reference Values for IPDM E/R .... 16 . Switch .................................................................... 36
.
How To Proceed With Trouble Diagnosis .............. 16 . REMOVAL .......................................................... 36 .
Preliminary Inspection ........................................... 16 . INSTALLATION .................................................. 36 . M
INSPECTION FOR POWER SUPPLY AND Removal and Installation of Front Washer Tank .... 37 .
GROUND CIRCUIT ............................................ 16 . REMOVAL .......................................................... 37 .
CONSULT-II Function (BCM) ................................ 18 . INSTALLATION .................................................. 37 .
CONSULT-II OPERATION ................................. 18 . Removal and Installation of Front Washer Motor ... 38
WORK SUPPORT .............................................. 19 . REMOVAL .......................................................... 38 .
DATA MONITOR ................................................ 19 . INSTALLATION .................................................. 38 .
ACTIVE TEST .................................................... 20 . RemovalandInstallationofWasherFluidLevelSen-
CONSULT-II Function (IPDM E/R) ........................ 21 . sor .......................................................................... 38
.
CONSULT-II OPERATION ................................. 21 . REMOVAL .......................................................... 38 .
DATA MONITOR ................................................ 22 . INSTALLATION .................................................. 38 .
ACTIVE TEST .................................................... 22 . HEADLAMP WASHER ............................................ 39 .
Front Wiper Does Not Operate in Rain (Front Wiper Components Parts and Harness Connector Loca-
Switch Turned to INT Position) .............................. 23 . tion ......................................................................... 39
.
Front Wiper Does Not Operate ............................. 25 . System Description ................................................ 39 .
Front Wiper Does Not Return to Stop Position (After OUTLINE ............................................................ 40 .
Front Wiper for 10 Seconds, They Stop for 20 sec- HEADLAMP WASHER OPERATION ................. 40 .

WW-1
Wiring Diagram -- HLC -- .................................... 41 . REMOVAL ...........................................................53 .
Terminals and Reference Values for BCM ............. 43 . INSTALLATION ...................................................53 .
Terminals and Reference Values for IPDM E/R ..... 43 . Washer Tube Layout ..............................................54 .
How to Proceed with Trouble Diagnosis ................ 44 . CIGARETTE LIGHTER ............................................55 .
Preliminary Check ................................................. 44 . Wiring Diagram -- CIGAR -- .................................55 .
CHECK POWER SUPPLY AND GROUND CIR- Removal and Installation of Cigarette Lighter ........56 .
CUIT ................................................................... 44
. REMOVAL ...........................................................56 .
CONSULT-II Functions (BCM) ............................... 45 . INSTALLATION ...................................................56 .
CONSULT-II BASIC OPERATION ...................... 45 . POWER SOCKET ....................................................57 .
DATA MONITOR ................................................. 46 . Wiring Diagram -- P/SCKT -- ...............................57 .
ACTIVE TEST .................................................... 47 . Removal and Installation of Front Power Socket ...58
CONSULT-II Functions (IPDM E/R) ....................... 48 . REMOVAL ...........................................................58 .
CONSULT-II BASIC OPERATION ...................... 48 . INSTALLATION ...................................................58 .
DATA MONITOR ................................................. 49 . Removal and Installation of Console Power Socket...58
ACTIVE TEST .................................................... 49 . REMOVAL ...........................................................58 .
Headlamp Washer Does Not Operate ................... 50 . INSTALLATION ...................................................58 .
Removal and Installation of Washer Nozzle .......... 53 . HORN .......................................................................59
.
REMOVAL .......................................................... 53 . Wiring Diagram -- HORN -- .................................59 .
INSTALLATION ................................................... 53 . Removal and Installation of Horn ...........................60 .
Removal and Installation of Washer Tank ............. 53 . REMOVAL ...........................................................60 .
Removal and Installation of Headlamp Washer INSTALLATION ...................................................60 .
Motor ..................................................................... 53
.

WW-2
PRECAUTION

PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00N1N

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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual. C
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. D
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. E
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. F
Wiring Diagrams and Trouble Diagnosis EKS00L9V

When you read wiring diagrams, refer to the following: G
q Refer to GI-15, "How to Read Wiring Diagrams" .
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
When you perform trouble diagnosis, refer to the following: H
q Refer to GI-11, "How to Follow Trouble Diagnoses" .
q Refer to GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident" .
I

WW-3
FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEM PFP:28810

Components Parts and Harness Connector Location EKS00P4U

SKIB6805E

System Description EKS00P4V

q All front wiper relays (MAIN, LOW/HIGH) are located in 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 the wiper switch is turned
ON.
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 IPDM E/R), from battery directly,
q through 50A fusible link (letter G, located in fuse and fusible link box)
q to BCM terminal 57,
q through 30A fuse (No. 39, located in IPDM E/R)
q to front wiper main relay (located in IPDM E/R).

WW-4
FRONT WIPER AND WASHER SYSTEM

With the ignition switch in ON or START position, power is supplied
A
q through 10A fuse [No. 15, located in fuse block (J/B)]
q to combination switch terminal 2,
q through 10A fuse [No. 1, located in fuse block (J/B)]
B
q to BCM terminal 3.
Ground is supplied
q to BCM terminal 55 and C
q to combination switch terminal 9
q through grounds M21, M80 and M83,
q to IPDM E/R terminals 38 and 59 and D
q to front wiper motor terminal 2
q through grounds E21, E41 and E61.
E
LOW SPEED WIPER OPERATION
When the ignition switch is in the ON or START position, and the front wiper switch is turned to the low posi-
tion, the BCM detects a low speed wiper ON request through the combination switch (wiper switch) reading F
function.
The BCM then sends a front wiper (low) request signal with CAN communication.
q from BCM terminals 21 and 22
G
q to IPDM E/R terminals 39 and 40.
When IPDM E/R receives front wiper (low) request signal, it supplies ground to energize the front wiper main
relay.
H
With the front wiper LOW/ HIGH relay energized, power is supplied
q through front wiper main relay
q through front wiper LOW/HIGH relay I
q through IPDM E/R terminal 32
q to front wiper motor terminal 1.
Ground is supplied J
q to front wiper motor terminal 2
q through grounds E21, E41 and E61.
With power and ground supplied, the front wiper motor operates at low speed. WW

HI SPEED WIPER OPERATION
When the ignition switch is in the ON or START position, and the front wiper switch is turned to the high posi- L
tion, the BCM detects a high speed wiper ON request through the combination switch (wiper switch) reading
function.
The BCM then sends a front wiper (high) request signal with CAN communication.
M
q from BCM terminals 21 and 22
q to IPDM E/R terminals 39 and 40.
When IPDM E/R receives front wiper (high) request signal, it supplies ground to energize the front wiper main
relays.
With the front wiper LOW/HIGH relays energized, power is supplied
q through front wiper main relay
q through front wiper LOW/HIGH relay
q through IPDM E/R terminal 35
q to front wiper motor terminal 4.
Ground is supplied
q to front wiper motor terminal 2
q through grounds E21, E41 and E61.
With power and ground supplied, the front wiper motor operates at high speed.

WW-5
FRONT WIPER AND WASHER SYSTEM

INTERMITTENT OPERATION
When front wiper switch is turned to INT position, wiper performs intermittent operation, low-speed operation,
and high-speed operation according to water drop increase rate on windshield detected by light and rain sen-
sor. If light and rain sensor malfunctions, it operates as vehicle speed sensing wiper during driving and oper-
ates intermittent operation according to INT-volume switch with vehicle stopped. During this time, BCM
controls each operation.
The BCM then sends a front wiper (HI or LOW) request signal with CAN communication.
q from BCM terminals 21 and 22
q to IPDM E/R terminals 39 and 40.
When the BCM determines that combination switch status is front wiper intermittent ON, it performs the follow-
ing operations.
q BCM detects intermittent wiper dial position.
q BCM sends front wiper request signal (HI or LOW) to IPDM E/R at calculated operation interval.
When IPDM E/R receives front wiper request signal (HI or LOW), it supplies ground to energize the front wiper
main relay and front wiper LOW/HIGH relay. It then sends an auto-stop signal to the BCM, and conducts inter-
mittent 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 the windshield base. When the wiper arms
reach the base of windshield, front wiper motor terminals 2 and 5 are connected.
Ground is supplied
q to IPDM E/R terminal 43
q through front wiper motor terminal 5
q through front wiper motor terminal 2
q through grounds E21, E41 and E61.
The IPDM E/R sends an auto stop operation signal to the BCM with CAN communication.
When the BCM receives an auto stop operation signal, the BCM sends wiper stop signal to the IPDM E/R over
CAN communication lines. The IPDM E/R then de-energizes the front wiper main relay.
The wiper motor will then stop the wiper arms at the STOP position.
FRONT WASHER OPERATION
When the ignition switch is in the ON or START position, and the front washer switches are OFF, the front
washer motor is supplied power
q through 10A fuse [No. 15, located in fuse block (J/B)]
q through combination switch (wiper switch) terminal 2
q through combination switch (wiper switch) terminal 4
q to front washer motor terminal 1.
When the front wiper switch is in the front washer position, the BCM detects a front washer signal request
through the combination switch (wiper switch) reading function.
Combination switch ground is supplied
q to front washer motor terminal 2
q through combination switch (wiper switch) terminal 3
q through combination switch (wiper switch) terminal 9
q through grounds M21, M80 and M83.
With ground supplied, the front washer motor is operated in the front direction.
When the BCM detects that front washer motor has operated for 0.4 seconds or longer, the BCM uses CAN
communication and sends a wiper request signal to the IPDM E/R for low speed operation of wipers.
When the BCM detects that the washer switch is OFF, low speed operation cycles approximately 3 times and
then stops.

WW-6
FRONT WIPER AND WASHER SYSTEM

MIST OPERATION
When the wiper switch is temporarily placed in the mist position, wiper low speed operation cycles once and A
then stops.
For additional information about wiper operation under this condition, refer to WW-5, "LOW SPEED WIPER
OPERATION" . B
If the switch is held in the mist position, low speed operation continues.
FAIL-SAFE FUNCTION
The BCM includes fail-safe function to prevent malfunction of electrical components controlled by CAN com- C
munications if a malfunction in CAN communications occurs.
The BCM uses CAN communications to stop output of electrical components it controls.
Until the ignition switch is turned OFF, the front wiper system remains in same status as just before fail-safe D
control was initiated. (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, the BCM remains in standby until normal signals are received.
When normal signals are received, fail-safe status is canceled. E

WW-7
FRONT WIPER AND WASHER SYSTEM

COMBINATION SWITCH READING FUNCTION
Description
q BCM reads combination switch status, and controls related systems such as headlamps and wipers,
according to the results.
q BCM reads information for a maximum of 20 switches by combining 5 output terminals (OUTPUT 1-5) and
5 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 (1 or more) switches are turned ON, the circuit of output terminals (OUTPUT 1-5) and input termi-
nals (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 the input terminal (INPUT 1-5) corresponding to that switch changes, the interface in the BCM
detects a voltage change, and the BCM determines that the switch is ON.

PKIC1724E

WW-8
FRONT WIPER AND WASHER SYSTEM

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

PKIC0420E G
Sample Operation: (When Wiper Switch is Turned ON)
q When the wiper switch is turned ON, contact in the combination switch turns ON. At this time if OUTPUT 1
transistor is activated, the BCM detects that voltage changes in INPUT 3. H
q When the OUTPUT 1 transistor is ON, the BCM detects that voltage changes in INPUT 3, and judges that
front wiper low is ON. Then the BCM sends a front wiper request signal (LO) to the IPDM E/R using CAN
communication. I
q When OUTPUT 1 transistor is activated again, BCM detects that voltage changes in INPUT 3, and recog-
nizes that the wiper switch is continuously ON.
J

PKIC1726E

WW-9
FRONT WIPER AND WASHER SYSTEM

NOTE:
Each OUTPUT terminal transistor is activated at 10 ms intervals. Therefore, after the switch is turned ON,
electrical loads are activated with time delay. This time delay is so short that it cannot be detected by human
senses.
Operation Mode
The combination switch reading function has the operation modes shown below.
1. Normal status

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