2004 INFINITI QX56 Factory Service Manual

turn signal bulb instrument cluster jump start overheating brake pads gearbox

Page 3313 of 3371

INFINITI QX56 2004 Factory Service Manual WT-34
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: August 20072004 QX56

Page 3314 of 3371

INFINITI QX56 2004 Factory Service Manual WW-1
WIPER, WASHER & HORN
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION WW
A
B
WW
Revision: August 20072004 QX56 PRECAUTION ............................................................ 3
Precauti

WW-1
WIPER, WASHER & HORN
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION WW
A
B
WW
Revision: August 20072004 QX56 PRECAUTION ............................................................ 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Wiring Diagrams and Trouble Diagnosis .................. 3
FRONT WIPER AND WASHER SYSTEM .................. 4
Components Parts and Harness Connector Loca-
tion ........................................................................... 4
System Description .................................................. 4
LOW SPEED WIPER OPERATION ...................... 5
HI SPEED WIPER OPERATION ........................... 5
INTERMITTENT OPERATION .............................. 5
AUTO STOP OPERATION .................................... 6
FRONT WASHER OPERATION ........................... 6
MIST OPERATION ................................................ 6
FAIL-SAFE FUNCTION ......................................... 6
COMBINATION SWITCH READING FUNCTION ..... 7
CAN Communication System Description ................ 7
Schematic ................................................................ 8
Wiring Diagram — WIPER — .................................. 9
Terminals and Reference Values for BCM ............. 12
Terminals and Reference Values for IPDM E/R ..... 13
Work Flow .............................................................. 13
Preliminary Inspection ............................................ 13
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT ............................................. 13
CONSULT-II Function (BCM) ................................. 15
CONSULT-II OPERATION .................................. 15
DATA MONITOR ................................................. 16
ACTIVE TEST ..................................................... 17
CONSULT-II Function (IPDM E/R) ......................... 17
CONSULT-II OPERATION .................................. 17
DATA MONITOR ................................................. 18
ACTIVE TEST ..................................................... 19
Trouble Diagnosis .................................................. 19
FRONT WIPER DOES NOT OPERATE ............. 19
FRONT WIPER STOP POSITION IS INCOR-
RECT .................................................................. 22
ONLY FRONT WIPER LOW DOES NOT OPER-
ATE ..................................................................... 23ONLY FRONT WIPER HI DOES NOT OPERATE ... 25
ONLY FRONT WIPER INT DOES NOT OPER-
ATE ...................................................................... 26
FRONT WIPER INTERMITTENT OPERATION
SWITCH POSITION CANNOT BE ADJUSTED ... 27
WIPERS DO NOT WIPE WHEN FRONT
WASHER OPERATES ........................................ 27
FRONT WIPERS OPERATE FOR 10 SECONDS,
STOP FOR 20 SECONDS, AND AFTER
REPEATING THIS OPERATION FIVE TIMES,
THEY BECOME INOPERATIVE ......................... 27
Removal and Installation of Front Wiper Arms,
Adjustment of Wiper Arms Stop Location ............... 29
REMOVAL ........................................................... 29
INSTALLATION ................................................... 29
Removal and Installation of Wiper Motor and Link-
age .......................................................................... 29
REMOVAL ........................................................... 29
INSTALLATION ................................................... 30
Washer Nozzle Adjustment .................................... 30
Washer Tube Layout .............................................. 31
Removal and Installation of Wiper and Washer
Switch ..................................................................... 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
Removal and Installation of Washer Tank .............. 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 32
Removal and Installation of Washer Motor ............. 32
REAR WIPER AND WASHER SYSTEM .................. 33
Components Parts and Harness Connector Loca-
tion .......................................................................... 33
System Description ................................................. 33
REAR WIPER OPERATION ................................ 33
INTERMITTENT OPERATION ............................ 34
AUTO STOP OPERATION .................................. 35
REAR WASHER OPERATION ............................ 35
BCM WIPER SWITCH READING FUNCTION .... 36
Wiring Diagram — WIP/R — .................................. 37
Terminals and Reference Values for BCM .............. 39

Page 3315 of 3371

INFINITI QX56 2004 Factory Service Manual WW-2Revision: August 20072004 QX56 How to Proceed With Trouble Diagnosis ................ 41
Preliminary Inspection ............................................ 41
INSPECTION FOR POWER SUPPLY AND
G

WW-2Revision: August 20072004 QX56 How to Proceed With Trouble Diagnosis ................ 41
Preliminary Inspection ............................................ 41
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT ............................................. 41
CONSULT-II Function (BCM) .................................. 43
CONSULT-II OPERATION ................................... 43
DATA MONITOR .................................................. 44
ACTIVE TEST ..................................................... 44
Rear Wiper Does Not Operate ............................... 45
Rear Wiper Stop Position Is Incorrect ..................... 47
Only Rear Wiper Does Not Operate ....................... 48
Only Rear Wiper Intermittent Does Not Operate .... 49
Wiper Does Not Wipe When Rear Washer Operates ... 49
Removal and Installation of Rear Wiper Arm, Adjust-
ment of Rear Wiper Arm Stop Location .................. 50
REMOVAL ........................................................... 50
INSTALLATION .................................................... 50
Removal and Installation of Rear Wiper Motor ....... 51
REMOVAL ........................................................... 51
INSTALLATION .................................................... 51Rear Washer Nozzle Adjustment ............................52
Rear Washer Tube Layout ......................................52
Removal and Installation of Rear Washer Nozzle ...52
REMOVAL ............................................................52
INSTALLATION ....................................................52
Check Valve ............................................................53
Removal and Installation of Rear Wiper and Washer
Switch .....................................................................53
Removal and Installation of Washer Tank ...............53
Removal and Installation of Washer Motor .............53
POWER SOCKET .....................................................54
Wiring Diagram — P/SCKT — ................................54
Removal and Installation of Power Sockets ............55
REMOVAL ............................................................55
INSTALLATION ....................................................55
HORN ........................................................................56
Wiring Diagram — HORN — ..................................56
Removal and Installation .........................................57
REMOVAL ............................................................57
INSTALLATION ....................................................57

Page 3316 of 3371

INFINITI QX56 2004 Factory Service Manual PRECAUTION
WW-3
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EKS00

PRECAUTION
WW-3
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EKS007F3
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
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
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.
WA RN ING:
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.
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.
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.
Wiring Diagrams and Trouble Diagnosis EKS007F4
When you read wiring diagrams, refer to the following:
Refer to GI-15, "How to Read Wiring Diagrams" .
Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.
When you perform trouble diagnosis, refer to the following:
Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" .
Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" .

Page 3317 of 3371

INFINITI QX56 2004 Factory Service Manual WW-4
FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
FRONT WIPER AND WASHER SYSTEMPFP:28810
Components Parts and Harness Connector LocationEKS007F5
System DescriptionEKS007F6
Both front

Page 3318 of 3371

INFINITI QX56 2004 Factory Service Manual FRONT WIPER AND WASHER SYSTEM
WW-5
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
to ignition relay, located in the IPDM E/R, and
through 10A fuse (No. 9, located in the fuse block J/B)
t

FRONT WIPER AND WASHER SYSTEM
WW-5
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
to ignition relay, located in the IPDM E/R, and
through 10A fuse (No. 9, located in the fuse block J/B)
to combination switch terminal 14, and
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38.
Ground is supplied
to BCM terminal 67 and
to combination switch terminal 12
through grounds M57, M61 and M79, and
to IPDM E/R terminals 38 and 59 and
to front wiper motor terminal 1
through grounds E9, E15 and E24.
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
function. The BCM then sends a front wiper (low) request signal over CAN communication lines
from BCM terminals 39 and 40
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 relay.
With the front wiper relay energized, power is supplied
through front wiper relay
to front wiper high relay
through IPDM E/R terminal 32
to front wiper motor terminal 3.
With power and ground supplied, the front wiper motor operates at low speed.
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-
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 over CAN communication lines
from BCM terminals 39 and 40
to IPDM E/R terminals 39 and 40.
When the IPDM E/R receives a front wiper (high) request signal, it supplies ground to energize the front wiper
and the front wiper high relays.
With the front wiper and the front wiper high relays energized, power is supplied
through front wiper relay
to front wiper high relay
through IPDM E/R terminal 35
to front wiper motor terminal 2.
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
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 the ON or START position, and the front wiper switch is turned to an intermittent
position, the BCM detects a front wiper (intermittent) ON request through the combination switch (wiper
switch) reading function.
The BCM then sends a front wiper (intermittent) request signal over CAN communication lines
from BCM terminals 39 and 40
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.

Page 3319 of 3371

INFINITI QX56 2004 Factory Service Manual WW-6
FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
BCM detects ON/OFF status of intermittent wiper dial position
BCM calculates operation interval from wiper dial position and vehicle

WW-6
FRONT WIPER AND WASHER SYSTEM
Revision: August 20072004 QX56
BCM detects ON/OFF status of intermittent wiper dial position
BCM calculates operation interval from wiper dial position and vehicle speed signal received through CAN
communications.
BCM sends front wiper request signal (INT) to IPDM E/R at calculated operation interval.
When the IPDM E/R receives a front wiper request signal (INT), it supplies ground to energize the front wiper
relay. It then sends an auto-stop signal to the BCM, and conducts intermittent 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 6 and 1 are connected.
Ground is supplied
to IPDM E/R terminal 43
through front wiper motor terminal 6
through front wiper motor terminal 1
through grounds E9, E15 and E24.
The IPDM E/R sends an auto stop operation signal to the BCM through CAN communication lines.
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 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 and rear washer switches are OFF, the
front and rear washer motor is supplied power
through 10A fuse (No. 9, located in the fuse block J/B)
through combination switch (wiper switch) terminal 14
through combination switch (wiper switch) terminal 13
to front and rear washer motor terminal 1, and
through combination switch (wiper switch) terminal 11
to front and rear washer motor terminal 2.
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
to front and rear washer motor terminal 2
through combination switch (wiper switch) terminal 11
through combination switch (wiper switch) terminal 12
through grounds M57, M61 and M79.
With ground supplied, the front and rear 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.
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 -S AFE F UN CTI ON
The BCM includes fail-safe function to prevent malfunction of electrical components controlled by CAN com-
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 con-
trol 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.

Page 3320 of 3371

INFINITI QX56 2004 Factory Service Manual FRONT WIPER AND WASHER SYSTEM
WW-7
C
D
E
F
G
H
I
J
L
MA
B
WW
Revision: August 20072004 QX56
When normal signals are received, fail-safe status is canceled.
COMBINATION SWITCH READING FUNCTION
Refer to

Load next 8 pages

Page: < prev 1-10 ... 3281-3288 3289-3296 3297-3304 3305-3312 3313-3320 3321-3328 3329-3336 3337-3344 3345-3352 ... 3376 next >

android auto power steering interior lights cruise control handbrake technical data