navigation INFINITI QX56 2006 Factory Service Manual

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLEATAutomatic Transmission
DDRIVELINE/AXLETFTransfer
PRPropeller Shaft
FFDFront Final Drive
RFDRear Final Drive
FAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System (SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mirrors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
APAdjustable Pedal
JAIR CONDITIONERATCAutomatic Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio Visual, Navigation & Telephone System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Elements
LMAINTENANCEMAMaintenance
MINDEXIDXAlphabetical Index
Edition: July 2005
Revision: November 2009
Publication No. SM6E-1J60U2
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© 2009 NISSAN NORTH AMERICA, INC.
All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission
of Nissan North America, Inc.
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TROUBLE DIAGNOSISATC-39
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How to Perform Trouble Diagnosis for Quick and Accurate RepairEJS003XF
WORK FLOW
SYMPTOM TABLE
*1AT C - 5 8 , "Operational Check (Front)"
or ATC-60, "
Operational Check
(Rear)" .
SHA900E
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System. AT C - 6 1
A/C system display is malfunctioning. Go to Navigation System. AV- 8 4
A/C system cannot be controlled.Go to Self-diagnosis Function. AT C - 5 6
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor. AT C - 6 4
Mode door motor is malfunctioning.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor. AT C - 7 0
Air mix door motor is malfunctioning.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor. AT C - 8 3
Intake door motor is malfunctioning.
Defroster door motor is malfunctioning. Go to Trouble Diagnosis Procedure for Defroster Door Motor. AT C - 8 7
Front blower motor operation is malfunction-
ing.Go to Trouble Diagnosis Procedure for Front Blower Motor.
AT C - 9 3
Rear blower motor operation is malfunction-
ing.Go to Trouble Diagnosis Procedure for Rear Blower Motor.
AT C - 1 0 1
Rear discharge air temperature and/or air
outlet does not change.Go to Trouble Diagnosis Procedure for Rear Air Control circuit.
AT C - 11 2
Magnet clutch does not engage.Go to Trouble Diagnosis Procedure for Magnet Clutch. AT C - 11 5
Insufficient coolingGo to Trouble Diagnosis Procedure for Insufficient Cooling. AT C - 1 2 1
Insufficient heatingGo to Trouble Diagnosis Procedure for Insufficient Heating. AT C - 1 2 8
NoiseGo to Trouble Diagnosis Procedure for Noise. AT C - 1 2 9
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis. AT C - 1 3 0
Memory function does not operate.Go to Trouble Diagnosis Procedure for Memory Function. AT C - 1 3 1

AV-1
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-TEM
K ELECTRICAL
CONTENTS
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SECTION
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PRECAUTIONS .....................................................
..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
PREPARATION ...................................................... ..... 5
Commercial Service Tool .................................... ..... 5
AUDIO .................................................................... ..... 6
Component Parts and Harness Connector Location ..... 6
System Description ............................................. ..... 8
REAR AUDIO REMOTE CONTROL UNIT ...... ..... 8
SATELLITE RADIO TUNER (PRE-WIRING) ... ..... 9
SATELLITE RADIO TUNER (FACTORY
INSTALLED) .................................................... ..... 9
SPEED SENSITIVE VOLUME SYSTEM ......... ..... 9
Schematic ........................................................... ... 10
Wiring Diagram — AUDIO — .............................. .... 11
Terminals and Reference Value for Audio Unit .... ... 22
Terminals and Reference Value for BOSE Speaker
Amp. .................................................................... ... 25
Terminals and Reference Value for Rear Audio
Remote Control Unit ............................................ ... 28
Terminals and Reference Value for AV Switch .... ... 29
Terminals and Reference Value for Satellite Radio
Tuner (Factory Installed) ..................................... ... 30
AV Switch Self-Diagnosis Function ..................... ... 31
STARTING THE SELF-DIAGNOSIS MODE .... ... 31
EXITING THE SELF-DIAGNOSIS MODE ........ ... 31
DIAGNOSIS FUNCTION .................................. ... 31
Trouble Diagnosis ............................................... ... 32
MALFUNCTION WITH RADIO AND CD .......... ... 32
FOR RADIO ONLY ........................................... ... 32
FOR CD ONLY ................................................. ... 33
FOR SATELLITE RADIO TUNER (FACTORY
INSTALLED) ONLY .......................................... ... 33
Noise Inspection .................................................. ... 33
TYPE OF NOISE AND POSSIBLE CAUSE ..... ... 33
Power Supply Circuit Inspection ......................... ... 35
Satellite Radio Tuner (Factory Installed) Power and
Ground Supply Circuit Inspection ........................ ... 37
Satellite Radio Tuner (Factory Installed) Commu- nication Circuit Inspection ....................................
... 38
Satellite Radio Tuner (Factory Installed) Left Chan-
nel Audio Signal Circuit Inspection ...................... ... 40
Satellite Radio Tuner (Factory Installed) Right
Channel Audio Signal Circuit Inspection ............. ... 41
Steering Switch Check ......................................... ... 41
AV Switch Check ................................................. ... 43
Audio Communication Line Check ...................... ... 44
Sound Is Not Heard From Front Door Speaker or
Front Tweeter ...................................................... ... 44
Sound Is Not Heard From Rear Door Speaker or
Rear Door Tweeter ................................................. 48
Sound Is Not Heard From Center Speaker ......... ... 51
Sound Is Not Heard From Subwoofer .................... 52
Removal and Installation ..................................... ... 55
AUDIO UNIT ..................................................... ... 55
AV SWITCH ...................................................... ... 55
BOSE SPEAKER AMP. .................................... ... 55
CENTER SPEAKER ......................................... ... 56
FRONT DOOR SPEAKER ............................... ... 56
FRONT TWEETER .......................................... ... 56
REAR AUDIO REMOTE CONTROL UNIT ....... ... 57
REAR DOOR SPEAKER .................................. ... 57
REAR DOOR TWEETER ................................. ... 57
SATELLITE RADIO ANTENNA ........................ ... 58
SATELLITE RADIO TUNER ............................. ... 58
STEERING WHEEL AUDIO CONTROL
SWITCHES ...................................................... ... 59
SUBWOOFER .................................................. ... 59
AUDIO ANTENNA ................................................. ... 60
System Description .............................................. ... 60
Wiring Diagram — W/ANT — .............................. ... 61
Location of Antenna ............................................. ... 62
Window Antenna Repair ...................................... ... 62
ELEMENT CHECK ........................................... ... 62
ELEMENT REPAIR .......................................... ... 63
TELEPHONE .......................................................... ... 64
Component Parts and Harness Connector Location ... 64
System Description .............................................. ... 65
BLUETOOTH® HANDS-FREE PHONE SYS-

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TEM ..................................................................
... 65
Wiring Diagram — H/PHONE — ......................... ... 67
Terminals and Reference Value for Bluetooth Con-
trol Unit ................................................................... 69
Bluetooth Control Unit Self-Diagnosis Function .. ... 71
BLUETOOTH CONTROL UNIT INITIALIZATION
CHECKS ........................................................... ... 71
STARTING THE DIAGNOSTIC MODE ............ ... 71
Power Supply and Ground Circuit Check for Blue-
tooth Control Unit ................................................. ... 72
Removal and Installation ..................................... ... 73
BLUETOOTH CONTROL UNIT ........................ ... 73
BLUETOOTH ON INDICATOR ......................... ... 73
MICROPHONE ................................................. ... 73
DVD ENTERTAINMENT SYSTEM ......................... ... 75
Component Parts and Harness Connector Location ... 75
Description ........................................................... ... 76
Schematic ............................................................ ... 77
Wiring Diagram — DVD — .................................. ... 78
Trouble Diagnosis ................................................ ... 81
Power Supply Circuit Inspection .......................... ... 82
Removal and Installation ..................................... ... 83
DVD PLAYER ...................................................... 83
VIDEO MONITOR ............................................ ... 83
NAVIGATION SYSTEM .......................................... ... 84
System Description .............................................. ... 84
TRAVEL DISTANCE ......................................... ... 84
TRAVEL DIRECTION ....................................... ... 84
MAP-MATCHING .............................................. ... 85
GPS (GLOBAL POSITIONING SYSTEM) ....... ... 85
COMPONENT DESCRIPTION ......................... ... 86
CAN Communication System Description ........... ... 86
Component Parts Location .................................. ... 87
Schematic ............................................................ ... 88
Wiring Diagram — NAVI — .................................. ... 89
Schematic ............................................................ ... 96
Wiring Diagram — COMM — .............................. ... 97
Terminals and Reference Value for NAVI Control
Unit ...................................................................... .100
Terminals and Reference Value for Display Control
unit ....................................................................... .102
Terminals and Reference Value for Display unit .. .106
Terminals and Reference Value for AV Switch .... .108
Terminals and Reference Value for BCM ............. .109
On Board Self-Diagnosis Function ...................... ..111
DESCRIPTION ................................................. ..111
DIAGNOSIS ITEM ............................................ ..111
Self-Diagnosis Mode (DCU) ................................ .112
OPERATION PROCEDURE ............................. .112
SELF–DIAGNOSIS RESULT ............................ .113
Self-Diagnosis Mode (NAVI) ................................ .114
OPERATION PROCEDURE ............................. .114
SELF–DIAGNOSIS RESULT ............................ .115
Confirmation/Adjustment Mode ........................... .117
OPERATION PROCEDURE ............................. .117
DISPLAY DIAGNOSIS ...................................... .118
VEHICLE SIGNALS .......................................... .118
NAVIGATION .................................................... .119
DISPLAY DIAGNOSIS ...................................... .119VEHICLE SIGNALS ..........................................
.120
ERROR HISTORY ............................................ .120
DIAGNOSIS BY ERROR HISTORY ................. .120
NAVIGATION .................................................... .122
CAN DIAG SUPPORT MONITOR ....................... .124
OPERATION PROCEDURE ............................. .124
AV Switch Self-Diagnosis Function ...................... .125
Power Supply and Ground Circuit Check for NAVI
Control Unit .......................................................... .126
Power Supply and Ground Circuit Check for Display
Control Unit .......................................................... .127
Power Supply and Ground Circuit Check for Display
Unit ....................................................................... .128
Power Supply and Ground Circuit Check for AV
Switch .................................................................. .130
Vehicle Speed Signal Check for NAVI Control Unit .131
Vehicle Speed Signal Check for Display Control Unit .132
Illumination Signal Check for NAVI Control Unit .. .133
Illumination Signal Check for Display Control Unit .133
Ignition Signal Check for NAVI Control Unit ......... .133
Ignition Signal Check for Display Control Unit ..... .134
Reverse Signal Check for NAVI Control Unit ....... .134
Reverse Signal Check for Display Control Unit ... .134
AV Communication Line Check (Between Display
Control Unit and NAVI Control Unit) ..................... .135
Audio Communication Line Check (Between Dis-
play Control Unit and Audio Unit) ......................... .136
Display Communication Line Check (Between Dis-
play Control Unit and Display Unit) ...................... .138
AV Communication Line Check (Between Display
Control Unit and AV Switch) ................................. .139
CAN Communication Line Check ........................ .140
If NAVI Control Unit Detects That DVD-ROM Map
is Not Inserted ...................................................... .140
If NAVI Control Unit Detects That Inserted DVD-
ROM Map is Malfunctioning or If It is Impossible to
Load Data from DVD-ROM Map .......................... .141
If Connection Between NAVI Control Unit and GPS
Antenna is Malfunctioning .................................... .141
Operating Screen for Audio and A/C is Not Dis-
played When Showing NAVI Screen .................... .142
Color of RGB Image is Not Proper (Only NAVI
Screen Looks Bluish) ........................................... .143
Color of RGB Image is Not Proper (Only NAVI
Screen Looks Reddish) ........................................ .144
Color of RGB Image is Not Proper (Only NAVI
Screen Looks Yellowish) ...................................... .145
Color of RGB Image is Not Proper (All Screens Look
Bluish) .................................................................. .146
Color of RGB Image is Not Proper (All Screens Look
Reddish) ............................................................... .147
Color of RGB Image is Not Proper (All Screens Look
Yellowish) ............................................................. .148
NAVI Screen is Rolling ......................................... .150
Guide Sound is Not Heard ................................... .152
Screen is Not Shown ........................................... .153
A/C Screen is Not Shown (NAVI Screen is Shown) .153
FUEL ECONOMY Screen is Not Shown .............. .153
Average Fuel Economy Displayed is Not Shown (“

AV-3
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*** ” is Shown) .....................................................
. 153
Distance to Empty Displayed is Not Shown (“ *** ”
is Shown) ............................................................ . 154
Driving Distance or Average Speed Displayed is Not
Shown (“ *** ” is Shown) ...................................... . 154
WARNING DOOR OPEN Screen is Not Shown . . 154
Unable to Operate All of AV Switches (Unable to
Start Self-Diagnosis) ........................................... . 155
Audio Does Not Work .......................................... . 155
Navigation System Does Not Activate ................ . 155
Previous NAVI Conditions are Not Stored ........... . 156
Previous Vehicle Conditions are Not Stored ....... . 156
Position of Current Location Mark is Not Correct . 156
Radio Wave From GPS Satellite is Not Received . 156
Driving Test ......................................................... . 157
Example of Symptoms Judged Not Malfunction . . 158
BASIC OPERATION ........................................ . 158
VEHICLE MARK .............................................. . 158
DESTINATION, PASSING POINTS, AND MENU
ITEMS CANNOT BE SELECTED/SET ............ . 159
VOICE GUIDE .................................................. . 159
ROUTE SEARCH ............................................. . 160
EXAMPLES OF CURRENT-LOCATION MARK
DISPLACEMENT ............................................. . 161
CURRENT-LOCATION MARK SHOWS A POSI-
TION WHICH IS COMPLETELY WRONG ....... . 164CURRENT-LOCATION MARK JUMPS ............
.164
CURRENT-LOCATION MARK IS IN A RIVER OR
SEA .................................................................. .165
WHEN DRIVING ON SAME ROAD, SOME-
TIMES CURRENT-LOCATION MARK IS IN
RIGHT PLACE AND SOMETIMES IT IS WRONG
PLACE .............................................................. .165
LOCATION CORRECTION BY MAP-MATCH-
ING IS SLOW ................................................... .165
ALTHOUGH GPS RECEIVING DISPLAY IS
GREEN, VEHICLE MARK DOES NOT RETURN
TO CORRECT LOCATION ............................... .165
NAME OF CURRENT PLACE IS NOT DIS-
PLAYED ............................................................ .165
CONTENTS OF DISPLAY DIFFER FOR BIRD-
VIEW™ AND THE (FLAT) MAP SCREEN ....... .165
Program Loading of NAVI Control Unit ................ .166
Removal and Installation ..................................... .167
AV SWITCH ...................................................... .167
DISPLAY CONTROL UNIT ............................... .167
DISPLAY UNIT ................................................. .167
GPS ANTENNA ................................................ .167
NAVI CONTROL UNIT ..................................... .168
STEERING WHEEL AUDIO CONTROL
SWITCHES ...................................................... .168

AV-84
NAVIGATION SYSTEM
Revision: November 20092006 QX56
NAVIGATION SYSTEMPFP:25915
System DescriptionEKS00BJD
NOTE:
Refer to NAVI System Owner's Manual for system operation.
The navigation system periodically calculates the vehicle's current
position according to the following three signals: Travel distance of
the vehicle as determined by the vehicle speed sensor, turning angle
of the vehicle as determined by the gyroscope (angular velocity sen-
sor), and the direction of vehicle travel as determined by the GPS
antenna (GPS information).
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data read from the map DVD-
ROM, which is stored in the DVD-ROM drive (map-matching), and
indicated on the screen with a current-location mark.
By comparing the vehicle position detection results found by the
GPS and by map-matching, more accurate vehicle position data can
be used.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.
TRAVEL DISTANCE
Travel distance calculations are based on the vehicle speed sensor input signal. Therefore, the calculation
may become incorrect as the tires wear down. To prevent this, an automatic distance fine adjustment function
has been adopted. Adjustments can be made in extreme cases (such as driving with tire chain fitted on tires).
Refer to AV- 11 7 , "
Confirmation/Adjustment Mode" .
TRAVEL DIRECTION
Change in the travel direction of the vehicle is calculated by a gyroscope (angular velocity sensor) and a GPS
antenna (GPS information). As the gyroscope and GPS antenna have both merit and demerit, input signals
from them are prioritized in each situation. However, this order of priority may change in accordance with more
detailed travel conditions so that the travel direction is detected more accurately.
WKIA1371E
SEL684V
Type Advantage Disadvantage
Gyroscope (angular velocity sensor)

Can detect the vehicle's turning angle
quite accurately.
Direction errors may accumulate when the
vehicle is driven for long distances without
stopping.
GPS antenna (GPS information)

Can detect the vehicle's travel direction
(North/South/East/West).
Correct direction cannot be detected when
the vehicle speed is low.

NAVIGATION SYSTEMAV-85
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MAP-MATCHING
Map-matching is a function that repositions the vehicle on the road
map when a new location is judged to be the most accurate. This is
done by comparing the current vehicle position, calculated by the
method described in the position detection principle, with the road
map data around the vehicle, read from the map DVD-ROM stored in
the DVD-ROM drive.
Therefore, the vehicle position may not be corrected after the vehicle
is driven over a certain distance or time in which GPS information is
hard to receive. In this case, the current-location mark on the display
must be corrected manually.
CAUTION:
The road map data is based on data stored in the map DVD-
ROM.

In map-matching, alternative routes to reach the destination will
be shown and prioritized, after the road on which the vehicle is
currently driven has been judged and the current-location mark
has been repositioned.
If there is an error in distance and/or direction, the alternative
routes will be shown in different order of priority, and the wrong
road can be avoided.
If two roads are running in parallel, they are of the same priority.
Therefore, the current-location mark may appear on either of
them alternately, depending on maneuvering of the steering
wheel and configuration of the road.

Map-matching does not function correctly when the road on
which the vehicle is driving is new and not recorded in the map
DVD-ROM, or when the road pattern stored in the map data and
the actual road pattern are different due to repair.
When driving on a road not present in the map, the map-match-
ing function may find another road and position the current-loca-
tion mark on it. Then, when the correct road is detected, the
current-location mark may leap to it.

Effective range for comparing the vehicle position and travel
direction calculated by the distance and direction with the road
data read from the map DVD-ROM is limited. Therefore, when
there is an excessive gap between the current vehicle position
and the position on the map, correction by map-matching is not possible.
GPS (GLOBAL POSITIONING SYSTEM)
GPS (Global Positioning System) has been developed and con-
trolled by the US Department of Defense. The system utilizes GPS
satellite (NAVSTAR), sending out radio waves while flying on an orbit
around the earth at the height of approx. 21,000 km (13,000 miles).
The GPS receiver calculates the vehicle's position in three dimen-
sions (latitude/longitude/altitude) according to the time lag of the
radio waves received from four or more GPS satellites (three-dimen-
sional positioning). If radio waves were received only from three
GPS satellites, the GPS receiver calculates the vehicle's position in
two dimensions (latitude/longitude), utilizing the altitude data calcu-
lated previously by using radio waves from four or more GPS satel-
lites (two-dimensional positioning).
Accuracy of the GPS will deteriorate under the following conditions.

In two-dimensional positioning, the GPS accuracy will deteriorate when the altitude of the vehicle position
changes.

There may be an error of approximately 10 m (30 ft) in position detected by three-dimensional positioning,
which is more accurate than two-dimensional positioning. The accuracy can be even lower depending on
the arrangement of the GPS satellites utilized for the positioning.
SEL685V
SEL686V
SKIA0613E
SEL526V

AV-86
NAVIGATION SYSTEM
Revision: November 20092006 QX56

Position detection is not possible when the vehicle is in an area where radio waves from the GPS satellite
do not reach, such as in a tunnel, parking lot in a building, and under an elevated highway. Radio waves
from the GPS satellites may not be received when some object is located over the GPS antenna.

Position correction by GPS is not available while the vehicle is stopped.
COMPONENT DESCRIPTION
NAVI Control Unit

The gyro (angular speed sensor) and the DVD-ROM drive are
built-in units that control the navigation functions.

Signals are received from the gyro, the vehicle speed sensor,
and the GPS antenna. Vehicle location is determined by com-
bining this data with the data contained in the DVD-ROM map.
Location information is shown on liquid crystal display (display
unit).

Maps, traffic control regulations, and other pertinent information
can be easily read from the DVD-ROM disc.

The oscillator gyro sensor is used to detect changes in vehicle
steering angle.
Map DVD-ROM

The map DVD-ROM has maps, traffic control regulations, and other pertinent information.

To improve DVD-ROM map matching and route determination functions, the DVD-ROM uses an exclusive
Nissan format. Therefore, the use of a DVD-ROM provided by other manufacturers cannot be used.
Display Control Unit
The display control unit coordinates audio and video signals between the NAVI control unit and the display
unit.
Display Unit
Displays NAVI system information.
AV Switch
AV switch allows user to input NAVI display settings. Self diagnostics are initiated using AV switch.
GPS Antenna
GPS antenna sends signals to NAVI control unit.
CAN Communication System DescriptionEKS00BJE
Refer to LAN-26, "CAN COMMUNICATION" .
WKIA4593E

NAVIGATION SYSTEMAV-87
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Component Parts LocationEKS00BJF
WKIA4571E
1. Fuse block (J/B)2. Fuse and fusible link box 3. Combination switch
M28
4. Combination meter M24 5. GPS antenna
6. Display unit
M93
7. Display control unit M94, M95 8. AV switch
M98 9. Audio unit
M45
10. Data link connector M22 11 . B C M
M18, M20 12. Steering wheel audio control switches
13. NAVI control unit B151, B152, B154 14. IPDM E/R
E121, E124

AV-88
NAVIGATION SYSTEM
Revision: November 20092006 QX56
SchematicEKS00BJG
BKWA0846E