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WIPER, WASHER & HORN
K ELECTRICAL
A
B
SECTION
WIPER, WASHER & HORN C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . Only Front Wiper HI Does Not Operate ................. 28 . F
Precautions for Supplemental Restraint System Only Front Wiper INT Does Not Operate ............... 30 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Front Wiper Interval Time Is Not Controlled by Vehi-
SIONER" ................................................................. 3
. cle Speed ............................................................... 30
. G
Wiring Diagrams and Trouble Diagnosis ................. 3 . Front Wiper Intermittent Operation Switch Position
FRONT WIPER AND WASHER SYSTEM ................. 4 . Cannot Be Adjusted ............................................... 31 .
Components Parts and Harness Connector Loca- Wipers Do Not Wipe When Front Washer Operates 31 ...
H
tion .......................................................................... 4
. After Front Wipers Operate for 10 Seconds, They
System Description ................................................. 4 . Stop for 20 Seconds, and After Repeating the Oper-
LOW SPEED WIPER OPERATION ..................... 5 . ations Five Times, They Become Inoperative ....... 32 .
HI SPEED WIPER OPERATION .......................... 5 . Front Wipers Do Not Stop ...................................... 33 . I
INTERMITTENT OPERATION ............................. 6 . Removal and Installation of Front Wiper Arms,
AUTO STOP OPERATION ................................... 6 . Adjustment of Wiper Arms Stop Location .............. 33 .
WASHER OPERATION ........................................ 6 . REMOVAL .......................................................... 33 . J
MIST OPERATION ............................................... 7 . INSTALLATION .................................................. 33 .
FAIL-SAFE FUNCTION ........................................ 7 . ADJUSTMENT ................................................... 34 .
COMBINATION SWITCH READING FUNCTION 7 ..... Removal and Installation of Front Wiper Motor
WW
CAN Communication System Description ............. 10 . Assembly ............................................................... 34
.
CAN Communication Unit ..................................... 10 . REMOVAL .......................................................... 34 .
Schematic ..............................................................11. INSTALLATION .................................................. 34 .
Wiring Diagram -- WIPER -- ............................... 12 . Disassembly and Assembly of Front Wiper Motor L
Terminals and Reference Values for BCM ............ 15 . Assembly ............................................................... 35
.
Terminals and Reference Values for IPDM E/R .... 16 . DISASSEMBLY .................................................. 35 .
How to Proceed With Trouble Diagnosis ............... 16 . ASSEMBLY ........................................................ 35 . M
Preliminary Check ................................................. 17 . Washer Nozzle Adjustment ................................... 36 .
CHECK POWER SUPPLY AND GROUND CIR- Washer Tube Layout ............................................. 37 .
CUIT ................................................................... 17
. Removal and Installation of Front Washer Nozzle... 37
CONSULT-II Functions (BCM) .............................. 18 . Removal and Installation of Front Washer Joint .... 37 .
CONSULT-II OPERATION ................................. 18 . Inspection of Check Valve ..................................... 37 .
DATA MONITOR ................................................ 19 . Removal and Installation of Front Wiper and Washer
ACTIVE TEST .................................................... 20 . Switch .................................................................... 37
.
CONSULT-II Functions (IPDM E/R) ...................... 20 . Removal and Installation of Washer Tank ............. 38 .
CONSULT-II OPERATION ................................. 20 . REMOVAL .......................................................... 38 .
SELF-DIAGRESULTS ....................................... 21 . INSTALLATION .................................................. 38 .
DATA MONITOR ................................................ 21 . Removal and Installation of Washer Pump ............ 39 .
ACTIVE TEST .................................................... 22 . REMOVAL .......................................................... 39 .
Front Wiper Does Not Operate ............................. 22 . INSTALLATION .................................................. 39 .
Front Wiper Does Not Return to Stop Position ...... 25 . CIGARETTE LIGHTER ............................................ 40 .
Only Front Wiper LO Does Not Operate ............... 27 .
WW-1
Wiring Diagram -- CIGAR -- ................................ 40 . HORN .......................................................................44
.
Removal and Installation of Cigarette Lighter ........ 41 . Wiring Diagram -- HORN -- .................................44 .
REMOVAL .......................................................... 41
. Removal and Installation ........................................45 .
INSTALLATION ................................................... 41
. REMOVAL ...........................................................45 .
POWER SOCKET .................................................... 42
. INSTALLATION ...................................................45 .
Wiring Diagram -- P/SCKT -- ............................... 42 .
Removal and Installation for Console Power Socket 43 ...
REMOVAL .......................................................... 43
.
INSTALLTION ..................................................... 43
.
WW-2
PRECAUTION
PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS009J3
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 AKS009J4
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
WW-3
FRONT WIPER AND WASHER SYSTEM
FRONT WIPER AND WASHER SYSTEM PFP:28810
Components Parts and Harness Connector Location AKS009J5
PKIA4937E
System Description AKS009J6
q All front wiper relays (HI, LO) are included 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 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 55,
q through 10 A fuse [No. 18, located in fuse block (J/B)]
q to BCM (body control module) terminal 42,
q through 20 A fuse [No. 73, located in IPDM E/R (intelligent power distribution module engine room)]
q to front wiper relay [located in IPDM E/R (intelligent power distribution module engine room)] and IPDM E/
R (intelligent power distribution module engine room) terminal 19
q through 15 A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]
q to CPU (central processing unit) [located in the IPDM E/R (intelligent power distribution module engine
room)]
q through 10 A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)]
WW-4
FRONT WIPER AND WASHER SYSTEM
q to CPU (central processing unit) [located in the IPDM E/R (intelligent power distribution module engine
room)]. A
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 38. B
When power is supplied to ignition relay coil, ignition relay is turned on power is supplied
q to front wiper relay [located in IPDM E/R (intelligent power distribution module engine room)]
C
q to front wiper high relay [located in IPDM E/R (intelligent power distribution module engine room)]
q to CPU (central processing unit) [located in the IPDM E/R (intelligent power distribution module engine
room)]
D
q through 10 A fuse [No. 84, located in IPDM E/R (intelligent power distribution module engine room)]
q through IPDM E/R (intelligent power distribution module engine room) terminal 44
q to front washer motor terminal 2. E
Ground is supplied
q to BCM (body control module) terminal 52
q through grounds M30 and M66, F
q to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60
q through grounds E17 and E43,
q to combination switch (wiper switch) terminal 12 G
q through grounds M30 and M66.
LOW SPEED WIPER OPERATION H
When wiper switch is in LO position, BCM detects low speed wiper ON signal by BCM wiper switch reading
function.
BCM sends front wiper request signal (LO) with CAN communication line I
q from BCM terminals 39 and 40
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 (located in IPDM E/R), J
power is supplied
q to front wiper motor terminal 4
q through IPDM E/R terminal 19. WW
Ground is supplied
q to front wiper motor terminal 3
L
q through IPDM E/R terminal 21
q through front wiper high relay and front wiper relay
q to IPDM E/R terminal 38 M
q through grounds E17 and E43.
With power and ground supplied, the front wiper motor operates at low speed.
HI SPEED WIPER OPERATION
When wiper switch is in HI position, BCM detects high speed wiper ON signal by BCM wiper switch reading
function.
BCM sends front wiper request signal (HI) with CAN communication line
q from BCM terminals 39 and 40
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 (located in IPDM E/R),
power is supplied
q to front wiper motor terminal 4
q through IPDM E/R terminal 19 and front wiper relay and front wiper HI relay.
Ground is supplied
q to front wiper motor terminal 2
WW-5
FRONT WIPER AND WASHER SYSTEM
q through IPDM E/R terminal 31
q through front wiper high relay and front wiper relay
q to IPDM E/R terminal 38
q through grounds E17 and E43.
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
Wiper intermittent operation delay interval is determined from a combination of 3 switches (intermittent opera-
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.
Wiper Dial Position Setting
Combination switch
Intermittent operation
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
Wiper dial position 2 ON ON OFF
Wiper dial position 3 ON OFF OFF
Wiper dial position 4 OFF OFF OFF
Wiper dial position 5 OFF OFF ON
Wiper dial position 6 OFF ON ON
Large
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-
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 (Combination switch output 3 and input 1 are performing.)
q Intermittent operation dial position 2: ON (Combination switch output 5 and input 1 are performing.)
q Intermittent operation dial position 3: ON (Combination switch output 4 and output 2 are performing.)
BCM determines front wiper intermittent operation delay interval from wiper dial position 1 and vehicle speed,
and sends wiper request signal (INT) to IPDM E/R.
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, ground is provided
q from IPDM E/R terminal 21
q to front wiper motor terminal 3, in order to continue wiper motor operation at low speed.
Ground is also supplied
q through IPDM E/R terminal 32
q to front wiper motor terminal 1
q through front wiper motor terminal 5
q through grounds E17 and E43.
When wiper arms reach base of windshield, front wiper terminals 1 and 4 are connected instead of terminals 1
and 5.
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 with ignition switch ON, BCM detects front wiper switch is
on the washer position by BCM wiper switch reading function (Refer to BCS-3, "COMBINATION SWITCH
READING FUNCTION" ).
WW-6
FRONT WIPER AND WASHER SYSTEM
Combination switch (wiper switch) ground is supplied
q to front washer motor terminal 1 A
q through combination switch (wiper switch) terminal 11
q to combination switch (wiper switch) terminal 12
B
q through grounds M30 and M66.
With ground supplied, front washer motor is operated.
When BCM detects that front washer motor has operated for 0.4 seconds or linger, BCM operates front wiper
motor for low speed. C
When BCM detects washer switch is OFF, low speed operation cycles approximately 3 times and stops.
MIST OPERATION
D
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. E
FAIL-SAFE FUNCTION
IPDM E/R includes a fail-safe function to prevent malfunction of electrical components controlled by CAN com- F
munications in CAN communications occurs.
When fail-safe status is initiated, IPDM E/R remains in steady unit signals are received.
COMBINATION SWITCH READING FUNCTION G
Description
q BCM reads combination switch (wiper) status, and controls related systems such as head lamps and wip-
ers, according to the results. H
q BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5)
and five input terminals (INPUT 1-5).
Operation Description I
q BCM activates transistors of output terminals (OUTPUT 1-5) periodically and, and allows current to flow in
turn.
q If any (1 or more) switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input terminals J
(INPUT 1-5) becomes active.
WW
L
M
WW-7
FRONT WIPER AND WASHER SYSTEM
q At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects volt-
age change, and BCM determines that switch is ON.
SKIA8639E
BCM - Operation Table of Combination Switches
q BCM reads operation status of combination switch using combinations shown in table below.
SKIA8640E
WW-8
FRONT WIPER AND WASHER SYSTEM
Sample Operation: (When Wiper Switch Turned ON)
q When wiper switch is turned ON, contact in combination switch turns ON. At this time if OUTPUT 1 tran- A
sistor is activated, BCM detects that voltage changes in INPUT 3.
q When OUTPUT 1 transistor is ON, BCM detects that voltage changes in INPUT 3, and judges that front
wiper low is ON. Then BCM sends front wiper request signal (LO) to IPDM E/R using CAN communica- B
tion.
q When OUTPUT 1 transistor is activated again, BCM detects that voltage changes in INPUT 3, and recog-
nizes that wiper switch is continuously ON. C
D
E
F
G
H
I
J
WW
PKIA4848E
NOTE:
Each OUTPUT terminal transistor is activated at 10 ms intervals. Therefore after switch is turned ON, electri- L
cal loads are activated with time delay. But this time delay is so short that it cannot be detected by human
senses.
M
WW-9
FRONT WIPER AND WASHER SYSTEM
Operation Mode
Combination switch reading function has operation modes shown below.
1. Normal status
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