2008 INFINITI QX56 radio

lug pattern radiator windshield wipers ABS clock setting wheel alignment

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INFINITI QX56 2008 Factory Service Manual AV-2
U1206 GPS RAM ...............................................42
Description ........................................................... ...42
DTC Logic ..........................................

AV-2
U1206 GPS RAM ...............................................42
Description ........................................................... ...42
DTC Logic ...............................................................42
U1207 GPS RTC ................................................43
Description ........................................................... ...43
DTC Logic ...............................................................43
U1216 AV CONTROL UNIT ...............................44
Description ........................................................... ...44
DTC Logic ...............................................................44
U1217 AV CONTROL UNIT ...............................45
Description ........................................................... ...45
DTC Logic ...............................................................45
U1218 AV CONTROL UNIT ...............................46
Description ........................................................... ...46
DTC Logic ...............................................................46
U1219 AV CONTROL UNIT ...............................47
Description ........................................................... ...47
DTC Logic ...............................................................47
U121A AV CONTROL UNIT ..............................48
Description ........................................................... ...48
DTC Logic ...............................................................48
U121B AV CONTROL UNIT ..............................49
Description ........................................................... ...49
DTC Logic ...............................................................49
U121C AV CONTROL UNIT ..............................50
Description ........................................................... ...50
DTC Logic ...............................................................50
U121D AV CONTROL UNIT ..............................51
Description ........................................................... ...51
DTC Logic ...............................................................51
U121E AV CONTROL UNIT ..............................52
Description ........................................................... ...52
DTC Logic ...............................................................52
U121F AV CONTROL UNIT ..............................53
Description ........................................................... ...53
DTC Logic ...............................................................53
Diagnosis Procedure ..............................................53
U1220 AV CONTROL UNIT ...............................54
Description ........................................................... ...54
DTC Logic ...............................................................54
U1243 DISPLAY UNIT .......................................55
Description ........................................................... ...55
DTC Logic ...............................................................55
Diagnosis Procedure ..............................................55
U1244 GPS ANTENNA ......................................57
Description ........................................................... ...57
DTC Logic ...............................................................57
Diagnosis Procedure ..............................................57
U1250 CAMERA CONTROL UNIT ....................58
Description ........................................................... ...58
DTC Logic ...............................................................58
Diagnosis Procedure ...............................................58
U1258 SATELLITE RADIO ANTENNA .............60
Description ........................................................... ...60
DTC Logic ...............................................................60
Diagnosis Procedure ...............................................60
U1300 AV COMM CIRCUIT ............................ ...61
Description ........................................................... ...61
U1310 AV CONTROL UNIT ..............................62
Description ........................................................... ...62
DTC Logic ...............................................................62
POWER SUPPLY AND GROUND CIRCUIT .....63
AV CONTROL UNIT ............................................... ...63
AV CONTROL UNIT : Diagnosis Procedure ...........63
DISPLAY UNIT ....................................................... ...64
DISPLAY UNIT : Diagnosis Procedure ...................64
A/C AND AV SWITCH ASSEMBLY ..........................65
A/C AND AV SWITCH ASSEMBLY : Diagnosis
Procedure ............................................................ ...
65
BOSE SPEAKER AMP .............................................66
BOSE SPEAKER AMP : Diagnosis Procedure .... ...66
WOOFER ................................................................ ...66
WOOFER : Diagnosis Procedure ...........................66
REAR VIEW CAMERA CONTROL UNIT ............... ...67
REAR VIEW CAMERA CONTROL UNIT : Diagno-
sis Procedure ..........................................................
67
REAR VIEW CAMERA ........................................... ...68
REAR VIEW CAMERA : Diagnosis Procedure .......68
DVD PLAYER ......................................................... ...69
DVD PLAYER : Diagnosis Procedure .....................69
VIDEO MONITOR ................................................... ...70
VIDEO MONITOR : Diagnosis Procedure ..............70
MICROPHONE ....................................................... ...71
MICROPHONE : Diagnosis Procedure ...................71
RGB (R: RED) SIGNAL CIRCUIT .....................73
Description ........................................................... ...73
Diagnosis Procedure ...............................................73
RGB (G: GREEN) SIGNAL CIRCUIT ................74
Description ........................................................... ...74
Diagnosis Procedure ...............................................74
RGB (B: BLUE) SIGNAL CIRCUIT ...................75
Description ........................................................... ...75
Diagnosis Procedure ...............................................75
RGB SYNCHRONIZING SIGNAL CIRCUIT ......76
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual AV-4
STEERING SWITCH ........................................174
Removal and Installation ..................................... ..174
REAR AUDIO REMOTE CONTROL UNIT ......175
Removal and Installati

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INFINITI QX56 2008 Factory Service Manual AV-10
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM
The audio system consists of the following components
• AV control unit
• Display unit
• BOSE speaker amp.
• Window antenna
• Steering

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INFINITI QX56 2008 Factory Service Manual AV-12
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM
Component Description
INFOID:0000000001696021
10. Rear audio and remote control unit R204 11. Microphone R109 12. Front door speaker
LH D12
RH

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INFINITI QX56 2008 Factory Service Manual AV-14
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
NAVIGATION SYSTEM
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 accur

AV-14
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
NAVIGATION SYSTEM
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 data stored on the
HDD.
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 on the HDD.
• In map-matching, alternative rout
es to reach the destination will be
shown and prioritized, after the road on which the vehicle is cur-
rently 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 on the HDD, or when
the road pattern stored in the m ap data and the actual road pattern
are different due to repair.
When driving on a road not present in the map, the map-matching
function may find another road and position the current-location
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 direc-
tion calculated by the distance and direction with the road data
read from the HDD is limited. Therefore, when there is an exces-
sive 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 wa ves from four or more GPS satel-
lites (two-dimensional positioning).
Type Advantage Disadvantage
Gyroscope (angular velocity sensor) • Can detect the vehicle's turning angle quite
accurately. • Direction errors may accumulate when the ve-
hicle is driven for long distances without stop-
ping.
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.
SEL685V
SEL686V
ALNIA0839GB
SEL526V
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual AV
NAVIGATION SYSTEMAV-15
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
Accuracy of the GPS will deteriorate under the following conditions.
• In two-dimensional positioning, t

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INFINITI QX56 2008 Factory Service Manual AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-23
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing

AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-23
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “SETTING” button, turn the volume control dial counterclockwise 30 clicks or more.
CONFIRMATION/
ADJUSTMENT Display diagnosis
Color spectrum bar Color tone of the screen can be checked by the display of a color bar.
Gradation bar Shading of the screen can be checked by the display of a gray scale.
Touch panel
• Touch panel calibration
• Touch panel response check
Vehicle signals The following vehicle signals are analyzed: Vehicle speed signal, park-
ing brake signal, light signal, ignition switch signal, and reverse signal.
Speaker test Connection can be checked by sending a test tone to each speaker.
Navigation Steering angle ad-
justment
Confirm/adjust the steering angle when there is a difference between
the displayed vehicle mark turning angle and actual.
Speed calibration Confirm/adjust the speed calibration when there is a difference between
the displayed vehicle mark location and actual.
XM SAT subscrip-
tion status Check the subscription status of the XM NAV Traffic subsription.
Error history Diagnosis results previously stored in the memory are displayed in this
mode.
Synchronize FES clock Turns FES (Familly Entertainment System) clock synchronization func-
tion ON/OFF.
Vehicle CAN diagnosis The transmitting/receiving of CAN communication can be monitored.
AV COMM diagnosis The transmitting/receiving of AV communication can be monitored.
Handsfree phone Handsfree volume
adjustment
Adjust handsfree volume (low, medium, high).
Voice microphone
test Test microphone operation.
Delete handsfree
memory Erase handsfree system memory.
Bluetooth Confirm/Change
passkey
Confirm and change the Bluetooth passkey
Confirm/Change
device name Confirm and change a device name stored in Bluetooth.
SAT Change channel
Any necessary channels required to recieve traffic information from the
satellite radio system can be set.
Change applica-
tion ID Any application ID’s required to recieve traffic information from the sat-
ellite radio system can be set.
Diag Not used.
Delete unit connection log Erase the error history and connection history of the unit.
Initialize settings All audio settings are reset to default levels.
Mode
Description
ALNIA0446GB
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual AV-26
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
CONFIRMATION/ADJUSTMENT MODE
1. Start the diagnosis function and select “Confirmati
on/Adjustment”. The confirmation/a

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