2006 INFINITI QX56 radio

AV-1
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-TEM
K ELECTRICAL
CONTENTS
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AV
Revision: November 2009 2006 QX56
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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*** ” 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

AUDIOAV-7
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Revision: November 2009 2006 QX56
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

AUDIOAV-9
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Revision: November 2009 2006 QX56

through audio unit terminals 26, 27, 28 and 29

to terminals 1, 2, 3, and 4 of rear audio remote control unit.
SATELLITE RADIO TUNER (PRE-WIRING)
NOTE:
The satellite radio pre-wiring allows connection of a satellite radio tuner.
Power is supplied at all times

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

to satellite radio tuner terminal 32.
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 satellite radio tuner terminal 36.
Audio signals are supplied

through satellite radio tuner terminals 21, 22, 23 and 24

to terminals 41, 42, 43 and 44 of audio unit.
Ground is supplied through the case of the satellite radio tuner.
SATELLITE RADIO TUNER (FACTORY INSTALLED)
NOTE:
Factory installed satellite radio systems may be identified by the location of the satellite radio tuner (factory
installed) antenna. Factory installed satellite radio antennas are installed on the front of the roof. Dealer
installed antennas may be installed anywhere on the roof.
Power is supplied at all times

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

to satellite radio tuner (factory installed) terminal 32.
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 satellite radio tuner (factory installed) terminal 36.
Radio signals are supplied from the satellite radio antenna to satellite radio tuner (factory installed) terminal
37.
Audio signals are supplied

through satellite radio tuner (factory installed) terminals 21, 22, 23 and 24

to terminals 41, 42, 43 and 44 of audio unit.
Ground is supplied through the case of the satellite radio tuner (factory installed).
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.

AV-22
AUDIO
Revision: November 20092006 QX56
Terminals and Reference Value for Audio UnitEKS00BIB
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symptom
+ – Ignition
switch Operation
2 (W) 1 (B) Audio sound
signal front
LHOutput ON
Receive audio
signal No sound from front
door speaker LH or
tweeter LH.
4 (Y) 3 (BR) Audio sound
signal front
RHOutput ON
Receive audio
signal No sound from front
door speaker RH or
tweeter RH.
5 (G/W) Ground Antenna
signal
Output ON
–More than 10V Poor radio reception.
6 (Y) Ground Battery
powerInput
–– Battery voltageSystem does not
work properly.
7 (BR) Ground Illumination
control sig-
nalInput ON Illumination con-
trol switch is
operated by light-
ing switch in 1st
position. Changes between 0 and 12V
Audio unit illumina-
tion cannot be con-
trolled.
8 (R/L) Ground Illumination
signal
Input OFF Lighting switch is
in 1st position.
Battery voltageAudio unit illumina-
tion does not come
on when lighting
switch is in 1st posi-
tion.
Lighting switch is
OFF.
3V or less
9 –Shield –– – 0VInterference and dis-
tortion heard from
speakers.
10 (V) Ground ACC signal Input ON –Battery voltage System does not
work properly.
12 (G/W) Ground Amp. ON
signalOutput ON
–More than 6.5V Amp. does not work
properly.
14 (BR) 13 (B/R) Audio sound
signal rear
LHOutput ON
Receive audio
signal No sound from rear
door speaker LH or
rear door tweeter LH.
16 (L) 15 (B/W) Audio sound
signal rear
RH
Output ON
Receive audio
signal No sound from rear
door speaker RH or
rear door tweeter
RH.
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E

AUDIOAV-23
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Revision: November 2009 2006 QX56
21 (V) GroundRemote
control A
Output ON Audio unit ON
5VRear audio remote
control unit does not
operate properly.
22 (P) Ground Remote
control BOutput ON Audio unit ON
5VRear audio remote
control unit does not
operate properly.
23 (BR/Y) Ground Remote
control COutput ON Audio unit ON
5VRear audio remote
control unit does not
operate properly.
24 (L) Ground Remote
control D
Output ON Audio unit ON
5VRear audio remote
control unit does not
operate properly.
25 (LG) –Remote
control
ground
–– –
0VRear audio remote
control switches do
not function.
27 (O/L) 26 (O) Audio sound
signal LHOutput ON
Receive audio
signal No sound from LH
headphone channel.
29 (W) 28 (W/L) Audio sound
signal RH
Output ON Receive audio
signal No sound from RH
headphone channel.
30 –Shield –– – 0VInterference and dis-
tortion heard from
headphones or rear
audio remote control
unit switches not
operating properly.
31 (O) Ground Remote
control
enable sig-
nalOutput ON Audio unit ON
5VRear audio remote
control unit does not
operate.
32 (V) Ground Remote
control
switch
power sup-
ply
Output ON Audio unit ON
12VRear audio remote
control unit does not
operate.
42 (R) 41 (G) Audio left
channel
sound sig-
nal from sat-
ellite radio
tunerInput ON
Receive audio
signal No sound from satel-
lite radio tuner left
channel.
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symptom
+ – Ignition
switch Operation
SKIA0177E
SKIA0177E
SKIA0177E

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-30
AUDIO
Revision: November 20092006 QX56
Terminals and Reference Value for Satellite Radio Tuner (Factory Installed)EKS00GB2
17 (Y/B) GroundCD LOAD
signal Output ON Pressed
0V
CD load does
not function.
Released 5V
Terminal No.
(Wire color) ItemSignal
input/
output Condition
Voltage
(Approx.) Example of
symptom
+ – Ignition
switch Operation
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Voltage
(approx.)
+ – Ignition
switch Operation
22 (R) 21 (G) Audio signal LH Output ON Receive audio signal.
24 (W) 23 (B) Audio signal RH Output ON Receive audio signal.
25 –Shield ––
– –
26 ONApprox. 0 V
28 (L) Ground REQ1
(SAT-AUDIO) Output ON
Set to the satellite radio
mode
29 (O/L) Ground Communication signal
(SAT-AUDIO)
Output ONSet to the satellite radio
mode
30 (W/L) Ground Communication signal
(AUDIO-SAT)
Input ONSet to the satellite radio
mode
32 (Y) GroundBattery power supply
InputOFF
− Battery voltage
36 (V) ACC power supply ACC
37 –Antenna signal –– –
SKIB3609E
SKIB3609E
SKIB3825E
SKIB3824E
SKIB3826E