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K ELECTRICAL
A
B
SECTION
WIPER, WASHER & HORN C
D
E
CONTENTS
PRECAUTION ........................................................... 3 . ACTIVE TEST .................................................... 19 . F
Precautions for Supplemental Restraint System Trouble Diagnosis .................................................. 20 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- FRONT WIPER DOES NOT OPERATE ............. 20 .
SIONER" ................................................................. 3
. FRONT WIPER STOP POSITION IS INCOR- G
Wiring Diagrams and Trouble Diagnosis ................. 3 . RECT .................................................................. 22
.
FRONT WIPER AND WASHER SYSTEM ................. 4 . ONLY FRONT WIPER LOW DOES NOT OPER-
Components Parts and Harness Connector Loca- ATE ..................................................................... 23
.
H
tion .......................................................................... 4
. ONLY FRONT WIPER HI DOES NOT OPERATE 23 ...
System Description ................................................. 4 . ONLY FRONT WIPER INT DOES NOT OPER-
LOW SPEED WIPER OPERATION ..................... 4 . ATE ..................................................................... 24
.
HI SPEED WIPER OPERATION .......................... 5 . FRONT WIPER INTERMITTENT OPERATION I
INTERMITTENT OPERATION ............................. 5 . SWITCH POSITION CANNOT BE ADJUSTED... 25
AUTO STOP OPERATION ................................... 6 . WIPERS DO NOT WIPE WHEN FRONT
WASHER OPERATION ........................................ 6 . WASHER OPERATES ....................................... 25 . J
MIST OPERATION ............................................... 6 . Removal and Installation for Front Wiper Arms,
FAIL-SAFE FUNCTION ........................................ 6 . Adjustment for Wiper Arms Stop Location ............. 26 .
CAN Communication System Description ............... 7 . REMOVAL .......................................................... 26 . WW
FOR TCS MODELS ............................................. 7 . INSTALLATION .................................................. 26 .
FOR A/T MODELS ............................................... 8 . Removal and Installation for Wiper Motor and Link-
FOR M/T MODELS .............................................. 9 . age ......................................................................... 26
.
Wiring Diagram -- WIPER -- ................................11 . REMOVAL .......................................................... 27 . L
Terminals and Reference Value for BCM .............. 13 . INSTALLATION .................................................. 27 .
Terminals and Reference Values for IPDM E/R .... 14 . Washer Nozzle Adjustment ................................... 28 .
BCM Wiper Switch Reading Function ................... 14 . Washer Tube Layout ............................................. 28 . M
OPERATION DESCRIPTION ............................. 15 . Removal and Installation for Wiper and Washer
TABLE OF BCM - COMBINATION SWITCH Switch .................................................................... 29
.
OPERATIONS .................................................... 15 . REMOVAL .......................................................... 29 .
SAMPLE OPERATION: (WIPER SWITCH INSTALLATION .................................................. 29 .
TURNED TO LO POSITION) ............................. 16 . Removal and Installation for Washer Tank ............ 29 .
OPERATING MODES ........................................ 16 . Removal and Installation for Washer Motor ........... 29 .
INTERMITTENT OPERATION ........................... 17 . CIGARETTE LIGHTER ............................................ 31 .
Work Flow ............................................................. 17. Wiring Diagram -- CIGAR -- ................................ 31 .
Preliminary Inspection ........................................... 18 . Removal and Installation ....................................... 32 .
INSPECTION FOR POWER SUPPLY AND POWER SOCKET .................................................... 33 .
GROUND CIRCUIT ............................................ 18 . Wiring Diagram -- CIGAR -- ................................ 33 .
CONSULT-II Functions .......................................... 18 . Removal and Installation ....................................... 34 .
CONSULT-II OPERATION ................................. 18 . HORN ....................................................................... 35
.
DATA MONITOR ................................................ 19 .
Revision: May 2004 WW-1 2003 Altima
Wiring Diagram -- HORN -- ................................. 35
.
Removal and Installation ....................................... 36
.
REMOVAL (HORN HIGH) .................................. 36 .
INSTALLATION (HORN HIGH) ........................... 36 .
REMOVAL (HORN LOW) ................................... 36 .
INSTALLATION (HORN LOW) ........................... 36 .
Revision: May 2004 WW-2 2003 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 harness connec-
tors.
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-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 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 2003 Altima
FRONT WIPER AND WASHER SYSTEM
FRONT WIPER AND WASHER SYSTEM PFP:28810
Components Parts and Harness Connector Location EKS003GP
WKIA0987E
System Description EKS003GQ
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 operates wiper motor according to CAN communication signals from BCM.
LOW SPEED WIPER OPERATION
Power is supplied at all times
q from BCM (input 1) terminal 48
q to combination switch terminal 1, and
q to 20A fuse (No. 39, located in the IPDM E/R).
When the ignition switch is in the ON or START position, and front wiper switch is turned to LO position,
front wiper LO contact in combination switch comes ON, and
Power is supplied
q through combination switch terminal 3
q to BCM (input 3) terminal 50.
When BCM determines that wiper switch is in LO position, it uses CAN communications and
Front wiper request signal (LO) is sent
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 energizes front wiper relay (in IPDM E/R).
Power is then supplied
q from 20A fuse (No. 39, located in the IPDM E/R)
q through front wiper relay (located in the IPDM E/R)
Revision: May 2004 WW-4 2003 Altima
FRONT WIPER AND WASHER SYSTEM
q through front wiper HI relay (located in the IPDM E/R)
q to IPDM E/R terminal 31 A
q to front wiper motor terminal L.
Ground is supplied
B
q to front wiper motor terminal E, and
q to IPDM E/R terminal 14 (and to front wiper relay)
q through body grounds E15 and E24. C
With power and ground supplied, the front wiper motor operates at low speed.
HI SPEED WIPER OPERATION
Power is supplied at all times D
q from BCM (input 2) terminal 49
q to combination switch terminal 2, and
E
q to 20A fuse (No. 39, located in the IPDM E/R).
When the ignition switch is the ON or START position, and the front wiper switch is turned to HI position,
front wiper HI contact in combination switch comes ON, and
Power is supplied F
q through combination switch terminal 10
q to BCM (output 3) terminal 41.
G
When BCM determines that wiper switch is in HI position, it uses CAN communications and
Front wiper request signal (HI) is sent to IPDM E/R
q from BCM terminals 70 and 71
H
q to IPDM E/R terminals 48 and 49.
When the IPDM E/R receives front wiper request signal (HI), it energizes the front wiper relay and front wiper
HI relay. Under this condition, I
Power is then supplied
q from 20A fuse (No. 39, located in the IPDM E/R)
q through front wiper relay (located in the IPDM E/R) J
q through front wiper HI relay (located in the IPDM E/R)
q to IPDM E/R terminal 30
q to front wiper motor terminal H. WW
Ground is supplied
q to front wiper motor terminal E, and
q to IPDM E/R terminal 14 (and to front wiper relay and front wiper hi relay) L
q through body grounds E15 and E24.
With power and ground supplied, the front wiper motor operates at high speed.
M
INTERMITTENT OPERATION
Power is supplied at all times
q from BCM (input 2) terminal 49
q to combination switch terminal 2.
When the ignition switch is in ON or START position, and the front wiper switch is turned to INT position,
the front wiper INT contact in the combination switch comes ON, and
Power is supplied
q from combination switch terminal 6
q to BCM (output 1) terminal 47.
When BCM determines that combination switch status is front wiper INT ON, it performs the following opera-
tions.
q When BCM detects ON/OFF status of intermittent operation dial positions 1, 2, and 3 (in same way as
wiper INT), it determines wiper dial position status.
q BCM calculates operation interval from wiper dial position and vehicle speed signal received from combi-
nation meter through CAN communications.
Revision: May 2004 WW-5 2003 Altima
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 turns ON internal front wiper relay. It then sends
auto-stop signal to BCM, and conducts intermittent front wiper motor operation.
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 to the front wiper motor terminal E
q through body grounds E15 and E24.
Ground is also supplied
q through terminal 38 of the IPDM E/R
q to front wiper motor terminal P
q through terminal E of the front wiper motor and
q through body grounds E15 and E24.
When wiper arms reach base of windshield, front wiper motor terminals P and E are no longer connected.
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 the ignition switch is in ON or START position, power is supplied
q through 10A fuse (No. 46 located in the IPDM E/R)
q through IPDM E/R terminal 18
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 and M61.
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 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-4, "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 2003 Altima
FRONT WIPER AND WASHER SYSTEM
CAN Communication System Description EKS003GR
A
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
control units during operation (not independent). In CAN communication, control units are connected with 2 B
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.
FOR TCS MODELS C
System Diagram
D
E
F
LKIA0015E
G
Input/Output Signal Chart
T: Transmit R: Receive
COMBINA-
ABS/TCS H
Signals ECM TCM TION BCM IPDM E/R
control unit
METER
Engine speed signal T R R
Engine coolant temperature signal T R I
Accelerator pedal position signal T
Fuel consumption monitor signal T R
J
A/T warning lamp signal T R
A/T position indicator signal R T R R(R range only) R
ABS operation signal R T
WW
TCS operation signal R R T
Air conditioner switch signal R T L
Air conditioner compressor signal R T
A/C compressor request signal T R
Cooling fan motor operation signal R T M
Cooling fan speed request signal T R
Position lights request R T R
Position lights status R T
Low beam request T R
Low beam status R R T
High beam request R T R
High beam status R R T
Front fog lights request T R
Front fog light status R T
OD cancel switch signal R T R
Brake switch signal R T
R T
Vehicle speed signal
R T R
Revision: May 2004 WW-7 2003 Altima
FRONT WIPER AND WASHER SYSTEM
COMBINA-
ABS/TCS
Signals ECM TCM TION BCM IPDM E/R
control unit
METER
Oil pressure switch R T
Sleep request1 R T
Sleep request2 T R
N range switch signal R T
P range switch signal R T
Seat belt buckle switch signal T R
Door switch signal R T R
Tail lamp request R T R
Turn indicator signal R T
Buzzer output signal R T
Trunk switch signal R T
ASCD main switch signal T R
ASCD cruise signal T R
Wiper operation R T
Wiper stop position signal R T
Rear window defogger switch signal T R
Rear window defogger control sig-
R R T
nal
FOR A/T MODELS
System Diagram
LKIA0017E
Input/Output Signal Chart
T: Transmit R: Receive
COMBINATION
Signals ECM TCM BCM IPDM E/R
METER
Engine speed signal T R
Engine coolant temperature signal T R
Accelerator pedal position signal T R
Fuel consumption monitor signal T R
A/T warning lamp signal T R
A/T position indicator signal R T R R(R range only)
Air conditioner switch signal R T
Air conditioner compressor signal R T
A/C compressor request signal T R
Blower fan switch signal (QR25DE) T
R
Cooling fan motor operation signal R T
Revision: May 2004 WW-8 2003 Altima
FRONT WIPER AND WASHER SYSTEM
COMBINATION
Signals ECM TCM BCM IPDM E/R
METER A
Cooling fan speed request signal T R
Position lights request R T R
B
Position lights status R T
Low beam request T R
Low beam status R R T C
High beam request R T R
High beam status R R T
D
Front fog lights request T R
Front fog light status R T
OD cancel switch signal R T R E
Brake switch signal R T
R T
Vehicle speed signal
R T R F
Oil pressure switch R T
Sleep request1 R T
G
Sleep request2 T R
N range switch signal R T
P range switch signal R T H
Seat belt buckle switch signal T R
Door switch signal R T R
I
Tail lamp request R T R
Turn indicator signal R T
Buzzer output signal R T J
Trunk switch signal R T
ASCD main switch signal T R
WW
ASCD cruise signal T R
Wiper operation R T
Wiper stop position signal R T L
Rear window defogger switch signal T R
Rear window defogger control signal R R T
M
FOR M/T MODELS
System Diagram
LKIA0018E
Revision: May 2004 WW-9 2003 Altima
FRONT WIPER AND WASHER SYSTEM
Input/Output Signal Chart
T: Transmit R: Receive
COMBINATION
Signals ECM BCM IPDM E/R
METER
Engine speed signal T
Engine coolant temperature signal T
Fuel consumption monitor signal T
Air conditioner switch signal R T
Air conditioner compressor signal R T
A/C compressor request signal T R
Blower fan switch signal R(QR25DE) T
Cooling fan motor operation signal R T
Cooling fan speed request signal T R
Position lights request R T R
Position lights status R T
Low beam request T R
Low beam status R R T
High beam request R T R
High beam status R R T
Front fog lights request T R
Front fog light status R T
Vehicle speed signal R T
Oil pressure switch R T
Sleep request1 R T
Sleep request2 T R
Seat belt buckle switch signal T R
Door switch signal R T R
Tail lamp request R T R
Turn indicator signal R T
Buzzer output signal R T
Trunk switch signal R T
ASCD main switch signal T R
ASCD cruise signal T R
Wiper operation R T
Wiper stop position signal R T
Rear window defogger switch signal T R
Rear window defogger control signal R R T
Revision: May 2004 WW-10 2003 Altima
FRONT WIPER AND WASHER SYSTEM
Wiring Diagram -- WIPER -- EKS003GS
A
B
C
D
E
F
G
H
I
J
WW
L
M
LKWA0101E
Revision: May 2004 WW-11 2003 Altima
FRONT WIPER AND WASHER SYSTEM
WKWA0273E
Revision: May 2004 WW-12 2003 Altima
FRONT WIPER AND WASHER SYSTEM
Terminals and Reference Value for BCM EKS003GT
A
Terminal Measuring condition
No. Standard (V)
Signal name Ignition
(Wire Operation or condition (Pyrex.)
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 2003 Altima
FRONT WIPER AND WASHER SYSTEM
Terminal Measuring condition
No. Standard (V)
Signal name Ignition
(Wire Operation or condition (Pyrex.)
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 EKS003GU
Terminal Measuring condition
No. Reference value (V)
Signal name Ignition
(Wire Operation or condition (Pyrex.)
color) switch
14 (B) Ground -- -- 0
18 (R/W) Front washer motor power ON -- 12
OFF 0
30 (L/B) Hi speed signal ON Wiper switch
HI 12
OFF 0
31 (L) Low speed signal ON Wiper switch
LO 12
OFF 12
Wiper position detection sig-
38 (L/Y) ON Wiper switch
nal LO
SKIA1132J
48 (L) CAN HI ON -- --
49 (Y) CAN LO ON -- --
BCM Wiper Switch Reading Function EKS003GV
BCM reads combination switch (wiper switch) status, and controls front wipers based on the results.
Revision: May 2004 WW-14 2003 Altima
FRONT WIPER AND WASHER SYSTEM
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. A
B
C
D
E
F
G
H
I
LKIA0095E
OPERATION DESCRIPTION
J
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) become ON at
this time, the input terminal corresponding to that switch detects current flowing, and BCM determines that the
switch is ON. WW
TABLE OF BCM - COMBINATION SWITCH OPERATIONS
BCM reads operation status of combination switch using combinations shown in table below.
L
M
LKIA0097E
Revision: May 2004 WW-15 2003 Altima
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.
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 by human
senses.
LKIA0100E
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.
Revision: May 2004 WW-16 2003 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- A
ing mode. OUTPUT (3 - 5) turn ON-OFF every 60 ms, and only input from light switch system is accepted.
B
C
D
E
F
G
LKIA0098E
INTERMITTENT OPERATION
Wiper intermittent operation delay interval is determined from a combination of 3 switches (intermittent opera- H
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. I
Wiper Dial Position Setting
Intermittent Combination switch
J
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 WW
Wiper dial position 2 ON ON OFF
Wiper dial position 3 ON OFF OFF
Wiper dial position 4 OFF OFF OFF L
Wiper dial position 5 OFF OFF ON
Wiper dial position 6 OFF ON ON
Large
M
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.
Work Flow EKS003GW
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-18, "Preliminary Inspection" .
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction.
Revision: May 2004 WW-17 2003 Altima
FRONT WIPER AND WASHER SYSTEM
5. Does wiper function operate normally? If it operates normally, GO TO 6. If not, GO TO 4.
6. End.
Preliminary Inspection EKS003GX
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
Inspection procedure
1. CHECK FUSE
q Check if wiper and washer fuse is blown.
Unit Power source Fuse No.
Front washer motor Ignition ON or START 46
Front wiper relay Battery 39
Front wiper relay, front wiper HI relay Ignition ON or START 33
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse, refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
2. GROUND CIRCUIT INSPECTION (BCM)
Check for continuity between the following terminals on BCM connector and body ground.
Terminals (wire color)
Unit (Connector) Ignition switch condition Continuity
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