Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2000-2005 Approved Nissan Altima 2004 WW
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K ELECTRICAL
A
B
SECTION
WIPER, WASHER & HORN C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . Trouble Diagnosis .................................................. 20 . F
Precautions for Supplemental Restraint System FRONT WIPER DOES NOT OPERATE ............. 20 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- FRONT WIPER STOP POSITION IS INCOR-
SIONER" ................................................................. 3
. RECT .................................................................. 23
. G
Wiring Diagrams and Trouble Diagnosis ................. 3 . ONLY FRONT WIPER LOW DOES NOT OPER-
FRONT WIPER AND WASHER SYSTEM ................. 4 . ATE ..................................................................... 25
.
Components Parts and Harness Connector Loca- ONLY FRONT WIPER HI DOES NOT OPERATE 25 ...
H
tion .......................................................................... 4
. ONLY FRONT WIPER INT DOES NOT OPER-
System Description ................................................. 4 . ATE ..................................................................... 27
.
LOW SPEED WIPER OPERATION ..................... 5 . FRONT WIPER INTERMITTENT OPERATION
HI SPEED WIPER OPERATION .......................... 5 . SWITCH POSITION CANNOT BE ADJUSTED... 27 I
INTERMITTENT OPERATION ............................. 5 . WIPERS DO NOT WIPE WHEN FRONT
AUTO STOP OPERATION ................................... 6 . WASHER OPERATES ....................................... 27 .
WASHER OPERATION ........................................ 6 . FRONT WIPERS OPERATE FOR 10 SECONDS, J
MIST OPERATION ............................................... 6 . STOP FOR 20 SECONDS, AND AFTER
FAIL-SAFE FUNCTION ........................................ 6 . REPEATING THIS OPERATION FIVE TIMES,
Combination Switch Reading Function ................... 7 . THEY BECOME INOPERATIVE ........................ 27 . WW
OPERATION DESCRIPTION ............................... 7 . Removal and Installation for Front Wiper Arms,
TABLE OF BCM - COMBINATION SWITCH Adjustment for Wiper Arms Stop Location ............. 30 .
OPERATIONS ...................................................... 8 . REMOVAL .......................................................... 30 .
SAMPLE OPERATION: (WIPER SWITCH INSTALLATION .................................................. 30 . L
TURNED TO LO POSITION) ............................... 8 . Removal and Installation for Wiper Motor and Link-
OPERATING MODES .......................................... 9 . age ......................................................................... 30
.
INTERMITTENT OPERATION ........................... 10 . REMOVAL .......................................................... 31 . M
CAN Communication System Description ............. 10 . INSTALLATION .................................................. 31 .
Wiring Diagram -- WIPER -- ................................11 . Washer Nozzle Adjustment ................................... 32 .
Terminals and Reference Value for BCM .............. 13 . Washer Tube Layout ............................................. 32 .
Terminals and Reference Values for IPDM E/R .... 14 . Removal and Installation for Wiper and Washer
Work Flow ............................................................. 14. Switch .................................................................... 33
.
Preliminary Inspection ........................................... 15 . REMOVAL .......................................................... 33 .
INSPECTION FOR POWER SUPPLY AND INSTALLATION .................................................. 33 .
GROUND CIRCUIT ............................................ 15 . Removal and Installation for Washer Tank ............ 33 .
CONSULT-II Functions (BCM) .............................. 16 . Removal and Installation for Washer Motor ........... 33 .
CONSULT-II OPERATION ................................. 16 . CIGARETTE LIGHTER ............................................ 34 .
DATA MONITOR ................................................ 17 . Wiring Diagram -- CIGAR -- ................................ 34 .
ACTIVE TEST .................................................... 18 . Removal and Installation ....................................... 35 .
CONSULT-II Functions (IPDM E/R) ...................... 19 . POWER SOCKET .................................................... 36 .
CONSULT-II OPERATION ................................. 19 . Wiring Diagram -- P/SCKT -- ............................... 36 .
DATA MONITOR ................................................ 19 . Removal and Installation ....................................... 37 .
ACTIVE TEST .................................................... 20 . HORN ....................................................................... 38
.
Revision: May 2004 WW-1 2004 Altima
Wiring Diagram -- HORN -- ................................. 38
.
Removal and Installation ....................................... 39
.
REMOVAL (HORN HIGH) .................................. 39 .
INSTALLATION (HORN HIGH) ........................... 39 .
REMOVAL (HORN LOW) ................................... 39 .
INSTALLATION (HORN LOW) ........................... 39 .
Revision: May 2004 WW-2 2004 Altima
PRECAUTION
PRECAUTION PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS003LC
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 EKS003GO
When you read wiring diagrams, refer to the following:
H
q Refer to GI-12, "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: I
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" .
J
WW
L
M
Revision: May 2004 WW-3 2004 Altima
FRONT WIPER AND WASHER SYSTEM
FRONT WIPER AND WASHER SYSTEM PFP:28810
Components Parts and Harness Connector Location EKS006U7
WKIA1633E
System Description EKS006U8
q Both front wiper relays are located 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 when switch is turned ON.
q BCM controls front wiper LO, HI, and INT (intermittent) operation.
q IPDM E/R (intelligent power distribution module engine room) operates the 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 7, and
q through 20A fuse (No. 39, located in the IPDM E/R)
q to front wiper relay (located in the IPDM E/R)
q through 15A fuse (No. 34, located in the IPDM E/R)
q to IPDM E/R (CPU).
With the ignition switch in ON or START position, power is supplied at all times
q through 10A fuse (No. 12, located in the fuse block J/B)
q to BCM terminal 35 and combination switch terminal 13, and
q through 10A fuse (No. 47, located in the IPDM E/R)
q through IPDM E/R terminal 44
q to combination switch terminal 11.
Ground is supplied at all times
q to BCM terminals 8, 27 and 63, and
q to combination switch terminal 12
Revision: May 2004 WW-4 2004 Altima
FRONT WIPER AND WASHER SYSTEM
q through body grounds M57, M61, and F14 (QR25DE), and
q to IPDM E/R terminals 38 and 60, and A
q to front wiper motor terminal E
q through body grounds E15 and E24.
B
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. C
BCM then sends front wiper (low) request signal over CAN communication lines
q from BCM terminals 70 and 71
q to IPDM E/R terminals 48 and 49. D
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 from front wiper relay E
q to front wiper HI relay
q through IPDM E/R terminal 21
q to front wiper motor terminal L. F
With power and ground supplied, the front wiper motor operates at low speed.
HI SPEED WIPER OPERATION
G
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
H
q from BCM terminals 70 and 71
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 I
the front wiper HI relays.
With the front wiper and the front wiper HI relays energized, power is supplied
q from front wiper relay
J
q to front wiper HI relay
q through IPDM E/R terminal 31
q to front wiper motor terminal H. WW
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
L
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- M
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 70 and 71
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.
Revision: May 2004 WW-5 2004 Altima
FRONT WIPER AND WASHER SYSTEM
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 L are connected.
Ground is supplied
q to terminal 32 of the IPDM E/R
q through front wiper motor terminal P
q through terminal E of the front wiper motor
q through body 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 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 +.
When front wiper switch is turned to washer position,
Ground is supplied
q to front washer motor terminal -
q through combination switch terminal 11
q through combination switch terminal 12
q through body grounds M57, M61 and F14 (QR25DE).
With ground supplied, the front washer motor is operated, and at the same time,
Power is supplied
q through combination switch terminal 7
q to BCM (output 2) terminal 40.
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.
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-
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.
When normal signals are received, fail-safe status is canceled.
Revision: May 2004 WW-6 2004 Altima
FRONT WIPER AND WASHER SYSTEM
Combination Switch Reading Function EKS006UI
A
BCM reads combination switch (wiper switch) status, and controls front wipers based on the results.
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
H
I
J
LKIA0095E
OPERATION DESCRIPTION
BCM continuously outputs power voltage from input terminals (INPUT 1 - 5). At this time, output terminals WW
(OUTPUT 1 - 5) operate transistors in sequence and carry current. If any switch (or switches) become ON at
this time, the input terminal corresponding to that switch detects current flowing, and BCM determines that the
switch is ON.
L
M
Revision: May 2004 WW-7 2004 Altima
FRONT WIPER AND WASHER SYSTEM
TABLE OF BCM - COMBINATION SWITCH OPERATIONS
BCM reads operation status of combination switch using combinations shown in table below.
LKIA0097E
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.
Revision: May 2004 WW-8 2004 Altima
FRONT WIPER AND WASHER SYSTEM
NOTE:
Each OUTPUT terminal transistor operates at 10 ms intervals. Therefore, a delay occurs between the switch A
becoming ON and operation of the electric load. However, this delay is so small it is undetectable by human
senses.
B
C
D
E
F
G
H
I
LKIA0100E
J
OPERATING MODES
The following operation modes exist for combination switch reading function.
Normal status WW
When BCM is not in sleep status, OUTPUT terminals (1 - 5) each turn ON-OFF every 10 ms.
L
M
Revision: May 2004 WW-9 2004 Altima
FRONT WIPER AND WASHER SYSTEM
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) turn ON-OFF every 60 ms, and only input from light switch system is accepted.
LKIA0098E
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
Intermittent Combination switch
Wiper dial position operation Intermittent operation dial Intermittent operation dial Intermittent operation dial
interval position 1 position 2 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 (input 3 and output 1 are conducting.)
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,
and sends wiper request signal (INT) to IPDM E/R.
CAN Communication System Description EKS006U9
Refer to LAN-4, "CAN COMMUNICATION" .
Revision: May 2004 WW-10 2004 Altima
FRONT WIPER AND WASHER SYSTEM
Wiring Diagram -- WIPER -- EKS006UA
A
B
C
D
E
F
G
H
I
J
WW
L
M
WKWA0936E
Revision: May 2004 WW-11 2004 Altima
FRONT WIPER AND WASHER SYSTEM
WKWA0937E
Revision: May 2004 WW-12 2004 Altima
FRONT WIPER AND WASHER SYSTEM
Terminals and Reference Value for BCM EKS006UJ
A
Terminal Measuring condition
No. Standard (V)
Signal name Ignition
(Wire Operation or condition (Approx.)
color) switch B
7 (W/B) Battery power -- -- 12
8 (B) Ground -- -- 0
C
35 (G) IGN power ON -- 12
D
40 (R/B) Combination switch output 2 ON Light switch and wiper switch OFF
E
SKIA1119J
F
41 (R/G) Combination switch output 3 ON Light switch and wiper switch OFF G
SKIA1119J H
I
42 (R/Y) Combination switch output 4 ON Light switch and wiper switch OFF
J
SKIA1119J
WW
43 (L) Combination switch output 5 ON Light switch and wiper switch OFF
L
SKIA1119J
M
47 (R/W) Combination switch output 1 ON Light switch and wiper switch OFF
SKIA1119J
Combination switch input 1
48 (G/W) ON Light switch and wiper switch OFF 4.5 or more
(Front washer, front wiper LO)
Combination switch input 2
49 (G/B) (Front wiper HI, front wiper ON Light switch and wiper switch OFF 4.5 or more
INT)
Combination switch input 3
50 (G/R) (intermittent operation dial ON Light switch and wiper switch OFF 4.5 or more
position 1)
Revision: May 2004 WW-13 2004 Altima
FRONT WIPER AND WASHER SYSTEM
Terminal Measuring condition
No. Standard (V)
Signal name Ignition
(Wire Operation or condition (Approx.)
color) switch
Combination switch input 4
51 (G/Y) (intermittent operation dial ON Light switch and wiper switch OFF 4.5 or more
position 3)
Combination switch input 5
52 (L/W) (intermittent operation dial ON Light switch and wiper switch OFF 4.5 or more
position 2)
70 (L) CAN HI ON -- --
71 (Y) CAN LO ON -- --
Terminals and Reference Values for IPDM E/R EKS006UC
Terminal Measuring condition
No. Reference value (V)
Signal name Ignition
(Wire Operation or condition (Approx.)
color) switch
OFF 0
21 (L) Low speed signal ON Wiper switch
LO Battery
OFF 0
31 (L/B) High speed signal ON Wiper switch
HI Battery
Wiper operating Battery
32 (L/Y) Wiper auto - stop signal ON
Wiper stopped 0
38 (B) Ground -- -- 0
44 (R/W) Front washer motor power ON -- Battery
48 (L) CAN-H ON -- --
49 (Y) CAN-L ON -- --
60 (B) Ground -- -- 0
Work Flow EKS006UD
1. Confirm the trouble symptom or customer complaint.
2. Understand the system description, refer to WW-4, "System Description" .
3. Perform preliminary inspection, refer to WW-15, "Preliminary Inspection" .
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction.
5. Does wiper function operate normally? If it operates normally, GO TO 6. If not, GO TO 4.
6. INSPECTION END.
Revision: May 2004 WW-14 2004 Altima
FRONT WIPER AND WASHER SYSTEM
Preliminary Inspection EKS006UE
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT A
Inspection procedure
1. CHECK FUSE B
q Check if wiper or washer fuse is blown.
Unit Power source Fuse No.
C
Front and washer motor Ignition ON or START 47
Front wiper relay Battery 39
BCM Ignition ON or START 12 D
BCM Battery f
OK or NG
E
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
F
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connector. G
2. Check voltage between BCM harness connector terminals and
ground.
Terminals Ignition switch position H
(+)
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