display INFINITI QX56 2006 Factory Service Manual

AUDIOAV-7
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1. Fuse block (J/B)2. Fuse and fusible link box 3. Front tweeter LH
M109
4. Combination meter M24 5. Center speaker
M110 6. Display unit
M93
7. Display control unit M94, M95 8. Front tweeter RH
M 111 9. AV Switch
M98
10. Audio unit M43, M44, M45, M46 11. BOSE speaker amp
M112, M113 12. Satellite radio tuner (pre-wiring or factory
installed, if equipped)
M41
13. Steering wheel audio control switches 14. Front door speaker LH, RH D12, D11215. Rear door tweeter LH, RH
D208, D308
16. Rear door speaker LH, RH D207, D307 17. Driver seat
18. Subwoofer
B72
19. Rear audio remote control unit R204

AV-8
AUDIO
Revision: November 20092006 QX56
System DescriptionEKS00BI8
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times

through 15A fuse [No. 17, located in the fuse block (J/B)]

to subwoofer terminal 6

through 20A fuse [No. 31, located in the fuse and fusible link box]

to audio unit terminal 6

to BOSE speaker amp. terminal 1

to AV switch terminal 1 and

to display control unit terminal 1.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 4, located in the fuse block (J/B)]

to audio unit terminal 10 and

to AV switch terminal 2 and

to display control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 12, located in the fuse block (J/B)]

to display control unit terminal 12.
Ground is supplied through the case of the audio unit.
Ground is also supplied

to subwoofer terminal 5

through body grounds B7 and B19 and

to BOSE speaker amp. terminal 17

to AV switch terminal 5 and

to display unit terminal 1 and

to display control unit terminal 3

through body grounds M57, M61 and M79.
Then audio signals are supplied

through audio unit terminals 1, 2, 3, 4, 13, 14, 15 and 16

to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29 and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied

through BOSE speaker amp. terminals 2, 3, 9,10,11,12, 13, 14, 15, 16, 18 and 19

to terminals + and - of front door speaker LH and RH and

to terminals + and - of front tweeter LH and RH and

to terminals + and - of center speaker and

to terminals + and - of rear door speaker LH and RH and

to terminals + and - of rear door tweeter LH and RH and

to terminals 1 and 2 of subwoofer.
When one of steering wheel audio control switches is pushed, the resistance in steering switch circuit changes
depending on which button is pushed.
REAR AUDIO REMOTE CONTROL UNIT
Power is supplied

from audio unit terminal 32

to rear audio remote control unit terminal 13.
Ground is supplied

to rear audio remote control unit terminal 15

through body grounds B117 and B132.
Audio signals are supplied

AV-24
AUDIO
Revision: November 20092006 QX56
44 (W) 43 (B)Audio right
channel
sound sig-
nal from sat-
ellite radio
tunerInput ON
Receive audio
signal No sound from satel-
lite radio tuner right
channel.
45 –Shield
ground
(audio sig-
nal) –– –
0V–
46 –Shield
ground
(data) –– –
0V–
48 (L) Ground Satellite
radio tuner
request to
audio unitInput ON
Turn audio unit
ON 5VSatellite radio tuner
does not operate
properly.
49 (O/L) Ground Audio RX Input ON Operate audio
volume Satellite radio tuner
audio information
does not display
properly.
50 (W/L) Ground Audio TX Output ON Operate audio
volume Satellite radio tuner
audio information
does not display
properly.
62 (G) 61 (L) Audio in sig-
nal from
bluetooth
control unitInput ON
Receive audio
signal Audio cannot be
heard.
63 (Y) –Mute signal Input ON –– Mute inoperative.
64 –Shield –– – ––
65 (O/L) Ground Audio RX Input ON Operate audio
volume Audio does not oper-
ate properly.
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symptom
+ – Ignition
switch Operation
SKIA0177E
SKIA4403E
SKIA4402E
SKIA0177E
SKIA4403E

AV-32
AUDIO
Revision: November 20092006 QX56
Trouble DiagnosisEKS00BIG
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.
MALFUNCTION WITH RADIO AND CD
Before proceeding, confirm that other AV switch functions (except audio functions) operate. If not, refer to AV-
155, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)" .
FOR RADIO ONLY
SymptomPossible cause
Inoperative

Audio unit power circuit check. Refer to AV- 3 5 , "Power Supply Circuit
Inspection" .

Audio communication line check. Refer to AV-136, "Audio Communication
Line Check (Between Display Control Unit and Audio Unit)" .

AV switch check. Refer to AV- 4 3 , "AV Switch Check" .
If above check is OK, replace audio unit.
Steering switch does not operate

Steering switch check. Refer to AV-41, "Steering Switch Check" .

AV switch check. Refer to AV- 4 3 , "AV Switch Check" .
If above check is OK, replace audio unit.
Audio information is not displayed on screen

Display unit check. Refer to AV- 11 2 , "Self-Diagnosis Mode (DCU)" .
All speakers do not sound

Audio unit

BOSE speaker amp. power supply and ground circuit check. Refer to AV- 3 5 ,
"Power Supply Circuit Inspection" .

BOSE speaker amp. ON signal

BOSE speaker amp.
One or several speakers do not sound

Front door speaker check. Refer to AV-44, "Sound Is Not Heard From Front
Door Speaker or Front Tweeter" .

Rear door speaker check. Refer to AV- 4 8 , "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter" .

Subwoofer check. Refer to AV- 5 2 , "Sound Is Not Heard From Subwoofer" .

Center speaker check. Refer to AV- 5 1 , "Sound Is Not Heard From Center
Speaker" .
Poor sound

Audio unit

BOSE speaker amp.

Speaker
Noisy

Audio unit

BOSE speaker amp.

Electrical equipment (generator, bonding wire, etc.)
Symptom Possible cause
No sound

Audio unit

Antenna feeder, wiring or connections

Antenna amplifier, power supply, wiring or connections
Noisy

Audio unit

Audio unit case ground

Antenna feeder, wiring or connections

Antenna amplifier, power supply, wiring or connections

Noise prevention parts

Each electrical equipment

Wire harness of each piece of electrical equipment
All radio stations stored in memory are deleted

Audio unit power circuit check. Refer to AV-35, "Power Supply Cir-
cuit Inspection" .

Audio unit

AUDIOAV-33
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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-44
AUDIO
Revision: November 20092006 QX56
Audio Communication Line CheckEKS00BIL
1. CHECK AUDIO COMMUNICATION LINE
Start audio communication line check. Refer to AV- 1 3 6 , "
Audio Communication Line Check (Between Display
Control Unit and Audio Unit)" .
OK or NG
OK >> Inspection End.
NG >> Replace malfunctioning part.
Sound Is Not Heard From Front Door Speaker or Front TweeterEKS00BIM
1. HARNESS CHECK
1. Disconnect BOSE speaker amp. connector M113 and suspect speaker connector.
2. Check continuity between BOSE speaker amp. harness connec- tor terminal M113 and suspect speaker harness connector ter-
minal.
3. Check continuity between BOSE speaker amp. harness connec- tor terminal M113 and ground.
OK or NG
OK >> GO TO 2.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector.
Terminals Continuity
BOSE speaker amp. Speaker or tweeter
Connector Terminal Connector Terminal
M113 13
D12 +
Ye s
14 -
15
D112 +
16 -
13 M109 +
14 -
15 M 111 +
16 -
Terminals Continuity
BOSE speaker amp.
—
Connector Terminal
M113 13
Ground No
14
15
16
WKIA2018E

NAVIGATION SYSTEMAV-85
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Revision: November 2009 2006 QX56
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-100
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for NAVI Control UnitEKS00GC1
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltag e
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
1 (B) Ground Ground –ON – 0V–
2 (Y) Ground Battery
power Input OFF
–Battery voltage System does not
work properly.
5 (O) Ground ACC signal Input ACC –Battery voltage System does not
work properly.
12 (B) 14 (W) Voice guide
signal Output ON
Press the “
GUIDE/
VOICE ” button. Only route guide
and operation
guide are not
heard.
13 –Shield
ground –– –
–Audio noise
interference.
44 (R) 47 RGB signal
(R: red) Output ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/ ADJUSTMENT function. NAVI screen
looks bluish.
45 (R/W) 47 RGB signal
(G: green) Output ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/ ADJUSTMENT
function. NAVI screen
looks reddish.
46 (B) 47 RGB signal
(B: blue) Output ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/
ADJUSTMENT function. NAVI screen
looks yellowish.
47 –Shield
ground –– –
–Video display
interference.
48 (BR) 49 RGB syn-
chronizing signal Output ON
Press the
“MAP ”
button. NAVI screen is
rolling.
49 –Shield
ground –– –
–Video display
interference.
SKIA0171J
SKIA4977E
SKIA4978E
SKIA4979E
SKIA0164E