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WIPER, WASHER & HORN
K ELECTRICAL
A
SECTION
WIPER, WASHER & HORN
WW B
C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . Front Wiper Does Not Operate .............................. 40 . F
Precautions for Supplemental Restraint System Front Wiper Stop Position Is Incorrect ................... 42 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Only Front Wiper Low Does Not Operate .............. 43 .
SIONER" ................................................................. 3
. Only Front Wiper Hi Does Not Operate ................. 44 . G
Wiring Diagrams and Trouble Diagnosis ................. 3 . Only Front Wiper Intermittent Does Not Operate ... 46
FRONT WIPER AND WASHER SYSTEM ................. 4 . Front Wiper Intermittent Operation Switch Position
Components Parts and Harness Connector Loca- Cannot Be Adjusted ............................................... 46 .
H
tion .......................................................................... 4
. Wipers Do Not Wipe When Front Washer Operates 46 ...
System Description ................................................. 4 . Removal and Installation of Front Wiper Arms,
LOW SPEED WIPER OPERATION ..................... 5 . Adjustment of Wiper Arms Stop Location .............. 47 .
HI SPEED WIPER OPERATION .......................... 5 . REMOVAL .......................................................... 47 . I
INTERMITTENT OPERATION ............................. 5 . INSTALLATION .................................................. 47 .
AUTO STOP OPERATION ................................... 6 . ADJUSTMENT ................................................... 47 .
WASHER OPERATION ........................................ 6 . Removal and Installation of Front Wiper Motor and J
MIST OPERATION ............................................... 6 . Linkage .................................................................. 47
.
FAIL-SAFE FUNCTION ........................................ 6 . REMOVAL .......................................................... 47 .
BCM WIPER SWITCH READING FUNCTION ..... 7 INSTALLATION .................................................. 48 .
WW
CAN Communication System Description ............... 9 . Disassembly and Assembly of Front Wiper Motor
CAN Communication Unit For 2WD Models ........... 9 . and Linkage ........................................................... 48 .
TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE DISASSEMBLY .................................................. 48 .
6/TYPE 7/TYPE 8 .............................................. 10 . ASSEMBLY ........................................................ 48 . L
TYPE 9/TYPE10/TYPE 11/TYPE 12/TYPE 13/ Washer Nozzle Adjustment ................................... 49 .
TYPE 14/TYPE 15/TYPE 16 .............................. 16 . Washer Tube Layout ............................................. 50 .
CAN Communication Unit For AWD Models ......... 21 . Removal and Installation of Front Washer Nozzle... 50 M
TYPE 17/TYPE 18/TYPE 19/TYPE 20/TYPE 21/ INSTALLATION .................................................. 50 .
TYPE 22/TYPE 23/TYPE 24 .............................. 21 . Inspection for Washer Nozzle ................................ 50 .
TYPE 25/TYPE26/TYPE 27/TYPE 28/TYPE 29/ CHECK VALVE ................................................... 50 .
TYPE 30/TYPE 31/TYPE 32 .............................. 27 . Removal and Installation of Front Wiper and Washer
Schematic ............................................................. 32. Switch .................................................................... 51
.
Wiring Diagram -- WIPER -- ............................... 33 . REMOVAL .......................................................... 51 .
Terminals and Reference Values for BCM ............ 36 . INSTALLATION .................................................. 51 .
Terminals and Reference Values for IPDM E/R .... 36 . Removal and Installation of Washer Tank ............. 51 .
How to Proceed With Trouble Diagnosis ............... 36 . REMOVAL .......................................................... 51 .
Preliminary Check ................................................. 37 . INSTALLATION .................................................. 51 .
CHECK POWER SUPPLY AND GROUND CIR- Removal and Installation of Washer Pump ............ 52 .
CUIT ................................................................... 37
. REMOVAL .......................................................... 52 .
CONSULT-II Functions .......................................... 37 . INSTALLATION .................................................. 52 .
CONSULT-II OPERATION ................................. 38 . REAR WIPER AND WASHER SYSTEM ................. 53 .
DATA MONITOR ................................................ 39 . Components Parts and Harness Connector Loca-
ACTIVE TEST .................................................... 39 . tion ......................................................................... 53
.
Revision; 2004 April WW-1 2003 Murano
System Description ................................................ 53 . Removal and Installation of Rear Wiper Blade ......67 .
REAR WIPER OPERATION ............................... 54 . REMOVAL ...........................................................67 .
INTERMITTENT OPERATION ........................... 54 . INSTALLATION ...................................................68 .
AUTO STOP OPERATION ................................. 54 . Washer Nozzle Adjustment ....................................68 .
WASHER OPERATION ...................................... 54 . Washer Tube Layout ..............................................69 .
BCM WIPER SWITCH READING FUNCTION ... 54 Removal and Installation of Rear Washer Nozzle...69
Wiring Diagram -- WIP/ R -- ................................ 55 . Check Valve ...........................................................70
.
Terminals and Reference Values for BCM ............. 57 . Removal and Installation of Rear Wiper and Washer
Terminals and Reference Values for IPDM E/R ..... 57 . Switch ....................................................................70
.
How to Proceed With Trouble Diagnosis ............... 57 . Removal and Installation of Washer Tank ..............70 .
Preliminary Check ................................................. 57 . Removal and Installation of Washer Pump ............70 .
CHECK POWER SUPPLY AND GROUND CIR- POWER SOCKET ....................................................71 .
CUIT ................................................................... 57
. Wiring Diagram -- P/SCKT -- ...............................71 .
CONSULT-II Functions .......................................... 59 . Removal and Installation of Instrument Power
CONSULT-II OPERATION .................................. 59 . Socket ....................................................................72
.
DATA MONITOR ................................................. 60 . REMOVAL ...........................................................72 .
ACTIVE TEST .................................................... 60 . INSTALLATION ...................................................72 .
Rear Wiper Does Not Operate .............................. 61 . Removal and Installation of Luggage Room Power
Rear Wiper Stop Position Is Incorrect .................... 63 . Socket ....................................................................72
.
Only Rear Wiper Does Not Operate ...................... 64 . REMOVAL ...........................................................72 .
Only Rear Wiper Intermittent Does Not Operate ... 64 INSTALLATION ...................................................72 .
Wiper Does Not Wipe When Rear Washer Operates 64 ... Removal and Installation of Console Power Socket...72
Removal and Installation of Rear Wiper Arm, Adjust- HORN .......................................................................73
.
ment of Wiper Arms Stop Location ........................ 65 . Wiring Diagram -- HORN -- .................................73 .
REMOVAL .......................................................... 65. Removal and Installation ........................................74 .
INSTALLATION ................................................... 65 . REMOVAL ...........................................................74 .
ADJUSTMENT ................................................... 65 . INSTALLATION ...................................................74 .
Removal and Installation of Rear Wiper Motor ...... 66 . CIGARETTE LIGHTER ............................................75 .
REMOVAL .......................................................... 66. Wiring Diagram -- CIGAR -- .................................75 .
INSTALLATION ................................................... 66 .
Revision; 2004 April WW-2 2003 Murano
PRECAUTION
PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS004MP
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
Wiring Diagrams and Trouble Diagnosis AKS004MR
When You Read Wiring Diagrams, Refer to the Following:
H
q Refer to GI-14, "How to Read Wiring Diagrams" .
q Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When You Perform Trouble Diagnosis, Refer to the Following: I
q Refer to GI-10, "How to Follow Trouble Diagnoses" .
q Refer to GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" .
J
WW
L
M
Revision; 2004 April WW-3 2003 Murano
FRONT WIPER AND WASHER SYSTEM
FRONT WIPER AND WASHER SYSTEM PFP:28810
Components Parts and Harness Connector Location AKS004MS
SKIA4579E
System Description AKS004MT
q All front wiper relays (HI, LO) are included in IPDM E/R.
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 (body control module) controls front wiper LO, HI, and INT (intermittent) operation.
q IPDM E/R (intelligent power distribution module engine room) operates wiper motor according to CAN
communication signals from BCM (body control module).
Power is supplied at all times
q through 50 A fusible link (letter F, located in fusible link block)
q to BCM (body control module) terminal 7
q through 30 A fuse [No. 74, located in IPDM E/R (intelligent power distribution module engine room)]
q to front wiper relay [built in IPDM E/R (intelligent power distribution module engine room)]
q through 15 A fuse [No. 73, located in IPDM E/R (intelligent power distribution module engine room)]
q to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
When the ignition switch ON or START position, power is supplied
q through 10 A fuse [No. 1, located in fuse block (J/B)]
q to BCM (body control module) terminal 35
q through 10 A fuse [No. 80, located in IPDM E/R (intelligent power distribution module engine room)]
q to front wiper relay [built in IPDM E/R (intelligent power distribution module engine room)] and
q to front wiper high relay [built in IPDM E/R (intelligent power distribution module engine room)]
q to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]
q through 10 A fuse [No. 87, located in IPDM E/R (intelligent power distribution module engine room)]
Revision; 2004 April WW-4 2003 Murano
FRONT WIPER AND WASHER SYSTEM
q through IPDM E/R (intelligent power distribution module engine room) terminal 18
q to combination switch terminal 14. A
Ground is supplied
q to BCM (body control module) terminal 8
B
q through grounds E13, E26 and E28
q to IPDM E/R (intelligent power distribution module engine room) terminals 14 and 45
q through grounds E13, E26 and E28 C
q to combination switch (wiper switch) terminal 12
q through grounds M14 and M78.
LOW SPEED WIPER OPERATION D
When front wiper switch is in LO position, BCM detects the LO position of the wiper switch by BCM wiper
switch reading function.
BCM sent front wiper request signal (LO) to IPDM E/R by CAN communication line E
q from BCM terminals 70 and 71
q to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper request signal (LO), it turns ON front wiper relay (built in IPDM E/R), F
power is supplied
q to front wiper motor terminal 3
q through IPDM E/R terminal 31 and front wiper high relay and front wiper relay. G
Ground is supplied
q to front wiper motor terminal 1
H
q through grounds E13, E26 and E28.
with power and ground is supplied, the front wiper motor operates at low speed.
HI SPEED WIPER OPERATION I
When front wiper switch is in HI position, BCM detects the HI position of the wiper switch by BCM wiper switch
reading function.
BCM sent front wiper request signal (HI) to IPDM E/R by CAN communication line J
q from BCM terminals 70 and 71
q to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper request signal (HI), it turns ON front wiper relay and front wiper HI relay WW
(built in IPDM E/R), power is supplied
q to front wiper motor terminal 2
q through IPDM E/R terminal 30 and front wiper high relay and front wiper relay. L
Ground is supplied
q to front wiper motor terminal 1
M
q through grounds E13, E26 and E28.
with power and ground is supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
The front wiper motor operates the wiper arms one time at low speed at a set interval of wiper volume switch
and vehicle speeds, this feature is controlled by the BCM and IPDM E/R.
When front wiper switch is in INT position BCM detects INT position of the wiper switch by BCM wiper switch
reading function. BCM performs the following operations
q When BCM detects ON/OFF status of intermittent operation dial positions 1, 2, and 3 it determines wiper
dial position status. Refer to WW-9, "Wiper Dial Position Setting" .
q BCM calculates operation interval from wiper dial position and vehicle speed signal received from unified
meter and A/C amp with CAN communications.
q BCM sends front wiper request signal (INT) to IPDM E/R at calculated operation interval.
q When IPDM E/R receives front wiper request signal (INT), it turns ON internal front wiper relay. It then
sends auto stop signal to BCM, and conducts intermittent front wiper motor operation.
With power is supplied and ground circuit is routed, front wiper operates at intermittent.
Revision; 2004 April WW-5 2003 Murano
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.
When wiper arms are not located at base of windshield with wiper switch OFF, power is provided
q from IPDM E/R terminal 31
q to front wiper motor terminal 3, in order to continue wiper motor operation at low speed.
When wiper arms reach base of windshield, front wiper motor terminals 1 and 4 are connected,
and ground is supplied
q to IPDM E/R terminal 38
q through front wiper motor terminal 4
q through front wiper motor terminal 1
q through grounds E13, E26 and E28.
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-
nication line.
IPDM E/R stops wiper motor. 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 WW-7, "BCM WIPER SWITCH READING FUNCTION" ), combination switch
(wiper switch) ground is supplied
q through combination switch (wiper switch) terminal 13
q to front and rear washer motor terminal 1
q to front and rear washer motor terminal 2
q through combination switch (wiper switch) terminal 11
q to combination switch terminal 12
q through grounds M14 and M78.
With ground is supplied, front and rear washer motor is operated.
When BCM detects that front and rear washer motor has operated for 0.4 seconds or linger, BCM operates
front wiper motor for low speed.
When BCM detects washer switch is OFF, low speed operation cycles approximately 3 times and stops.
MIST OPERATION
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" .
If the switch is held in the mist position, low speed operation continues.
FAIL-SAFE FUNCTION
IPDM E/R includes a fail-safe function to prevent malfunction of electrical components controlled by CAN com-
munications in CAN communications occurs.
When fail-safe status is initiated, IPDM E/R remains in steady unit signals are received.
IPDM E/R maintains the condition of which before fail-safe starts until ignition switch is turned on.
After ignition switch is turned off and turned on again, if wipers stop at the different position, fail-safe returns
the wipers automatically to the proper position and then stops.
Revision; 2004 April WW-6 2003 Murano
FRONT WIPER AND WASHER SYSTEM
BCM WIPER SWITCH READING FUNCTION
BCM reads combination switch (wiper switch) status, and controls front wipers based on the results. A
BCM is a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5). It reads 20
types of switch data and 5 types of diagnosis data.
B
C
D
E
F
G
SKIA6458E
H
Operation Description
BCM continuously outputs power voltage from input terminals (INPUT 1 - 5). At this time, output terminals
(OUTPUT 1 - 5) operate transistors in sequence and carry current. If any switch (or switches) becomes ON at
I
this time, the input terminal corresponding to that switch detects current flowing, and BCM determines that the
switch is ON.
Table of BCM - COMBINATION SWITCH OPERATIONS J
BCM reads operation status of combination switch using combinations shown in table below.
WW
L
M
SKIA6459E
Revision; 2004 April WW-7 2003 Murano
FRONT WIPER AND WASHER SYSTEM
Sample Operation: (WIPER SWITCH TURNED TO LO POSITION)
q When wiper switch is turned to LO position, front wiper LO contact inside combination switch becomes
ON. At this time, OUTPUT 3 transistor operates and BCM detects flow of current at INPUT 1.
q When OUTPUT 3 transistor is ON and BCM detects current flowing at INPUT 1, BCM determines that
wiper switch is at LO. BCM uses CAN communication and sends front wiper signals to IPDM E/R.
q When OUTPUT 3 transistor operates again and BCM again detects current flowing at INPUT 1, it confirms
that front wiper LO operation is continuing.
SKIA4469E
NOTE:
Each OUTPUT terminal transistor operates at 10 ms intervals. Therefore, a delay occurs between the
switch becoming ON and operation of the electric load. However, this delay is so small it is undetectable.
Operating Modes
The following operation modes exist for combination switch reading function.
Normal Status
When BCM is not in sleep status, OUTPUT terminals (1 - 5) each turn ON-OFF every 10 ms.
Sleep Status
When BCM is in sleep status, output from OUTPUT 1 and 2 transistors stops, with BCM entering a power-sav-
ing mode. OUTPUT (3 - 5) turns ON-OFF every 60 ms, and only input from lighting switch system is accepted.
SKIA3097E
Revision; 2004 April WW-8 2003 Murano
FRONT WIPER AND WASHER SYSTEM
Intermittent Operation
Wiper intermittent operation delay interval is determined from a combination of 3 switches (intermittent opera- A
tion dial position 1, intermittent operation dial position 2, and intermittent operation dial position 3) and vehicle
speed signal.
During each intermittent operation delay interval, BCM sends front wiper request signal to IPDM E/R. B
Wiper Dial Position Setting
Combination switch
Intermittent operation C
Wiper dial position Intermittent operation Intermittent operation Intermittent operation
interval
dial position 1 dial position 2 dial position 3
Wiper dial position 1 ON ON ON
Small D
Wiper dial position 2 ON ON OFF
Wiper dial position 3 ON OFF OFF
Wiper dial position 4 OFF OFF OFF E
Wiper dial position 5 OFF OFF ON
Wiper dial position 6 OFF ON ON
Large F
Wiper dial position 7 OFF ON OFF
Example: For wiper dial position 1.
Using combination switch reading function, BCM detects ON/OFF status of intermittent operation dial posi- G
tions 1, 2, and 3.
When combination switch status is as listed below, BCM determines that it is wiper dial position 1.
q Intermittent operation dial position 1: ON (input 3 and output 1 are conducting) H
q Intermittent operation dial position 2: ON (input 5 and output 1 are conducting)
q Intermittent operation dial position 3: ON (input 4 and output 2 are conducting)
BCM determines front wiper intermittent operation delay interval from wiper dial position 1 and vehicle speed, I
and sends wiper request signal (INT) to IPDM E/R.
CAN Communication System Description J
AKS005MC
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
WW
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
L
CAN Communication Unit For 2WD Models AKS007R1
Body type Wagon
Axle 2WD M
Engine VQ35DE
Transmission CVT
Brake control ABS VDC
Low tire pressure warning
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