2006 INFINITI QX56 engine

AUDIOAV-33
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
NOTE:
1. The following noise results from variations in field strength, such as fading noise and multi-path noise, or
external noise from trains and other sources. It is not a malfunction.

Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-
tains or buildings blocking the signal.

Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the
antenna at a different time from the waves which reflect off mountains or buildings.
FOR CD ONLY
FOR SATELLITE RADIO TUNER (FACTORY INSTALLED) ONLY
NOTE:
Pressing the SAT button, the display unit will display `NO SAT' when the following conditions exist:

Loss of power to the satellite radio tuner (factory installed)

Open or short in the REQ1, TXD, or RXD circuits.
If the satellite antenna is disconnected or inoperative, the display unit will display ANTENNA.
Noise InspectionEKS00BIH
The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-
tion of each piece of electrical equipment, and determine the cause.
NOTE:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical
components, one by one.
TYPE OF NOISE AND POSSIBLE CAUSE
Symptom Possible cause
CD cannot be inserted.

CD

Audio unit
CD cannot be ejected.
The CD cannot be played.
The sound skips, stops suddenly, or is distorted.
Symptom
Possible cause
Inoperative

Satellite radio tuner (factory installed) power and ground circuit inspection.
Refer to AV- 3 7 , "
Satellite Radio Tuner (Factory Installed) Power and Ground
Supply Circuit Inspection" .

Satellite radio tuner (factory installed) communication circuit inspection.
Refer to AV- 3 8 , "
Satellite Radio Tuner (Factory Installed) Communication
Circuit Inspection" .
If above check is OK, replace satellite radio tuner (factory installed). Refer
to AV- 5 8 , "
SATELLITE RADIO TUNER" .
Right or left channel does not sound

Satellite radio tuner (factory installed) right channel audio signal circuit
inspection. Refer to AV-41, "
Satellite Radio Tuner (Factory Installed) Right
Channel Audio Signal Circuit Inspection" .

Satellite radio tuner (factory installed) left channel audio signal circuit
inspection. Refer toAV- 4 0 , "
Satellite Radio Tuner (Factory Installed) Left
Channel Audio Signal Circuit Inspection" .
If above check is OK, replace satellite radio tuner (factory installed). Refer to
AV- 5 8 , "
SATELLITE RADIO TUNER" .
Poor reception

Location of vehicle. Make certain vehicle is in an open area.

Satellite radio antenna or antenna feeder. Refer to AV- 6 2 , "Location of
Antenna" .
Noisy

Satellite radio tuner (factory installed) ground.

Satellite radio tuner (factory installed) harness shield wires.

Electrical equipment (generator, bonding wire, etc.). Refer to AV-33, "Noise
Inspection" .

AV-34
AUDIO
Revision: November 20092006 QX56
Occurrence conditionPossible cause
Occurs only when engine is ON. A continuous growling noise occurs. The speed of
the noise varies with changes in the engine speed.

Ignition components
A whistling noise occurs while the engine speed is
high. A booming noise occurs while the engine is
running and the lighting switch is ON.

Generator
The occurrence of the noise is linked with the operation of the fuel pump.

Fuel pump condenser
Noise only occurs when various
electrical components are oper-
ating. A cracking or snapping sound occurs with the
operation of various switches.

Relay malfunction, audio unit malfunction
The noise occurs when various motors are operat-
ing.

Motor case ground

Motor
The noise occurs constantly, not just under certain conditions.

Rear defogger coil malfunction

Open circuit in printed heater

Poor ground of antenna amplifier or
antenna feeder line
A cracking or snapping sound occurs while the vehicle is being driven, especially
when it is vibrating excessively.

Ground wire of body parts

Ground due to improper part installation

Wiring connections or a short circuit

AV-112
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Self-Diagnosis Mode (DCU)EKS00GDZ
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MEMORY 4” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial self-diagnosis screen will be shown, and items “Self- Diagnosis (DCU) ”, “Self-Diagnosis (NAVI) ”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR ” will
become selective.
5. Perform self-diagnosis by selecting the “Self-Diagnosis”.

Self-diagnosis subdivision screen will be shown and the oper-
ation enters the self-diagnosis mode.

A bar graph shown below the self-diagnosis subdivision
screen indicates progress of the diagnosis.
WKIA4439E
SKIA4207E
SKIA4208E

AV-114
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Self-Diagnosis Codes
Self-Diagnosis Mode (NAVI)EKS00GE0
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MEMORY 4” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial self-diagnosis screen will be shown, and items “Self- Diagnosis (DCU) ”, “Self-Diagnosis (NAVI) ”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR ” will
become selective.
Diagnosis
No. Possible cause
Reference
page
1 Display control unit malfunction Refer to AV-167
.
2 Display communication line between display control unit and display unit Refer to AV-138
.
3 Audio unit power supply and ground circuit
Audio communication line between display control unit and audio unit
Refer to
AV-136
.
4 NAVI control unit power supply and ground circuit
AV communication line between display control unit and NAVI control unit Refer to AV-135
.
WKIA4439E
SKIA4207E

NAVIGATION SYSTEMAV-117
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
Confirmation/Adjustment ModeEKS00GE1
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MEMORY 4” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial self-diagnosis screen will be shown, and items “Self-
Diagnosis (DCU) ”, “Self-Diagnosis (NAVI) ”, “Confirmation/
Adjustment ” and “CAN DIAG SUPPORT MONITOR ” will
become selective.
5. When “Confirmation/Adjustment ” is selected on the initial self-
diagnosis screen, the operation will enter the CONFIRMATION/
ADJUSTMENT mode. In this mode, check and adjustment of
each item will become possible.
6. The initial trouble diagnosis screen will be shown, and items “Display Diagnosis ”, “Vehicle Signals ”, “Auto Climate Control ”
and “Navigation ” will become selective.
7. Select each switch on “CONFIRMATION/ADJUSTMENT ”
screen to display the relevant diagnosis screen.
WKIA4439E
SKIA4207E
SKIA4220E

AV-124
NAVIGATION SYSTEM
Revision: November 20092006 QX56
CAN DIAG SUPPORT MONITOREKS00GE2
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MEMORY 4” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial self-diagnosis screen will be shown, and items “Self- Diagnosis (DCU) ”, “Self-Diagnosis (NAVI) ”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR ” will
become selective.
5. Select “CAN DIAG SUPPORT MONITOR ”.
6. Display status of CAN communication.

If the ignition is turned on and UNKWN is shown on the screen, the value of the counter will be up.
(MAX50)

The value of the counter does not change if the ignition changes to OFF. (MAX50)

If the counter shows the value of 50 and UNKWN is shown, the value of 50 will not be changed.
WKIA4439E
SKIA4207E
Item ContentError counter
CAN_COMM OK/NG0-50
CAN_CIRC_1 OK/UNKWN 0-50
CAN_CIRC_2 OK/UNKWN 0-50
CAN_CIRC_3 OK/UNKWN 0-50
CAN_CIRC_4 OK/UNKWN 0-50
CAN_CIRC_5 OK/UNKWN 0-50
CAN_CIRC_6 OK/UNKWN 0-50
CAN_CIRC_7 OK/UNKWN 0-50
CAN_CIRC_8 OK/UNKWN 0-50
CAN_CIRC_9 OK/UNKWN 0-50
SKIA4288E

AV-164
NAVIGATION SYSTEM
Revision: November 20092006 QX56
CURRENT-LOCATION MARK SHOWS A POSITION WHICH IS COMPLETELY WRONG
In the following cases, the current-location mark may appear on completely different position in the map
depending on the GPS satellite signal receiving conditions. In this case, perform location correction and direc-
tion correction.

When location correction has not been done
–If the receiving conditions of the GPS satellite signal is poor, or if the current-location mark becomes out of
place, it may move to a completely different location and not come back if location correction is not done.
The position will be corrected if the GPS signal can be received.

When the vehicle has traveled by ferry, or when the vehicle has been towed
–Because calculation of the current location cannot be done when travelling with the ignition OFF, for
example when traveling by ferry or when being towed, the location before travel is displayed. If the precise
location can be detected with GPS, the location will be corrected.
CURRENT-LOCATION MARK JUMPS
In the following cases, the current-location mark may appear to jump as a result of automatic correction of the
current location.

When map-matching has been done
–If the current location and the current-location mark are different when map-matching is done, the current-
location mark may seem to jump. At this time, the location may be “corrected” to the wrong road or to a
location which is not on a road.

When GPS location correction has been done
–If the current location and the current-location mark are different when the location is corrected using GPS
measurements, the current-location mark may seem to jump. At this time, the location may be “corrected”
to a location which is not on a road.
Precautions
for driving Just after the engine is started
If the vehicle is driven just after the engine
is started when the gyroscope (angular
speed sensor) correction is not completed,
the vehicle can lose its direction and may
have deviated from the correct location. Wait for a short while before
driving after starting the engine.
Continuous driving without stopping When driving long distances without stop- ping, direction errors may accumulate, and
the current-location mark may deviate from
the correct road. Stop and adjust the orientation.
Abusive driving Spinning the wheels or engaging in other
kinds of abusive driving may result in the
system being unable perform correct
detection, and may cause the vehicle mark
to deviate from the correct road. If after travelling about 10 km (6
miles) the correct location has
not been restored, perform
location correction and, if nec-
essary, direction correction.
How to cor-
rect location Position correction accuracy
If the accuracy of location settings is poor,
accuracy may be reduced when the correct
road cannot be found, particularly in places
where there are many roads. Enter in the road displayed on
the screen with an accuracy of
approx. 1mm.
Caution: Whenever possible,
use detailed map for the cor-
rection.
Direction when location is corrected
If the accuracy of location settings during
correction is poor, accuracy may be
reduced afterwards. Perform direction correction.
Cause (condition)
–: While driving ooo: Display Driving conditionRemarks (correction, etc.)
SEL701V
SEL702V

BL-3
C
DE
F
G H
J
K L
M A
B
BL
Revision: November 2009 2006 QX56
CONSULT-II ........................................................
. 141
CONSULT-II INSPECTION PROCEDURE ...... . 141
CONSULT-II DIAGNOSTIC TEST MODE FUNC-
TION ................................................................. . 142
HOW TO READ SELF-DIAGNOSTIC RESULTS . 143
IVIS (NATS) SELF-DIAGNOSTIC RESULTS
ITEM CHART ................................................... . 143
Work Flow ........................................................... . 144
Trouble Diagnoses .............................................. . 145
SYMPTOM MATRIX CHART 1 ........................ . 145
SYMPTOM MATRIX CHART 2 ........................ . 146
DIAGNOSTIC SYSTEM DIAGRAM ................. . 146
Diagnostic Procedure 1 ....................................... . 147
Diagnostic Procedure 2 ....................................... . 148
Diagnostic Procedure 3 ....................................... . 149
Diagnostic Procedure 4 ....................................... . 150
Diagnostic Procedure 5 ....................................... . 151
Diagnostic Procedure 6 ....................................... . 154
How to Replace NATS Antenna Amp. ................. . 155
HOMELINK UNIVERSAL TRANSCEIVER ............ . 156
Wiring Diagram — TRNSCV — .......................... . 156
Trouble Diagnoses .............................................. . 157
DIAGNOSTIC PROCEDURE ........................... . 157
CAB AND REAR BODY ........................................ . 159
Body Mounting .................................................... . 159
BODY REPAIR ....................................................... . 160
Body Exterior Paint Color .................................... . 160
Body Component Parts ....................................... . 161
UNDERBODY COMPONENT PARTS ............. . 161
BODY COMPONENT PARTS .......................... . 163
Corrosion Protection ........................................... . 165
DESCRIPTION ................................................. . 165
ANTI-CORROSIVE WAX ................................. . 166UNDERCOATING .............................................
.167
Body Sealing ....................................................... .168
DESCRIPTION ................................................. .168
Body Construction ............................................... .171
BODY CONSTRUCTION ................................. .171
Body Alignment ................................................... .172
BODY CENTER MARKS .................................. .172
PANEL PARTS MATCHING MARKS ................ .173
DESCRIPTION ................................................. .174
ENGINE COMPARTMENT ............................... .175
UNDERBODY .................................................. .177
PASSENGER COMPARTMENT ...................... .180
REAR BODY .................................................... .185
Handling Precautions for Plastics ........................ .187
HANDLING PRECAUTIONS FOR PLASTICS . .187
LOCATION OF PLASTIC PARTS ..................... .188
Precautions in Repairing High Strength Steel ...... .190
HIGH STRENGTH STEEL (HSS) USED IN NIS-
SAN VEHICLES ............................................... .190
Foam Repair ........................................................ .192
URETHANE FOAM APPLICATIONS ............... .192
FILL PROCEDURES ........................................ .192
Replacement Operations ..................................... .193
DESCRIPTION ................................................. .193
HOODLEDGE .................................................. .196
FRONT PILLAR ................................................ .197
CENTER PILLAR ............................................. .200
OUTER SILL .................................................... .202
REAR FENDER ................................................ .203
REAR SIDE MEMBER ..................................... .205
REAR FLOOR REAR ....................................... .206
CRUSH HORN ................................................. .207