2007 INFINITI QX56 radio

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Page 587 of 3061

INFINITI QX56 2007 Factory Service Manual AUDIO
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2. Remove audio unit screws, using power tool.
3. Pull out audio unit and disconnect audio unit connectors.
Installation
Installatio

Page 588 of 3061

INFINITI QX56 2007 Factory Service Manual AV-48
< SERVICE INFORMATION >
AUDIO
5. Remove Bose speaker amp. screws (A) and remove Bose
speaker amp. from Bose speaker amp./satellite radio tuner
bracket.
Installation
Installation is in the revers

Page 590 of 3061

INFINITI QX56 2007 Factory Service Manual AV-50
< SERVICE INFORMATION >
AUDIO
2. Remove rear door tweeter screws and remove rear door
tweeter.
3. Disconnect rear door tweeter connector.
Installation
Installation is in the reverse order of rem

Page 591 of 3061

INFINITI QX56 2007 Factory Service Manual AUDIO
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5. Remove satellite radio tuner screws (A) and remove satellite
radio tuner from Bose speaker amp./satellite radio tuner bracket
(1)

Page 592 of 3061

INFINITI QX56 2007 Factory Service Manual AV-52
< SERVICE INFORMATION >
AUDIO ANTENNA
AUDIO ANTENNA
System DescriptionINFOID:0000000003533688
With the ignition switch in ACC or ON, power is supplied
• through 10A fuse [No. 4, located in the

Page 594 of 3061

INFINITI QX56 2007 Factory Service Manual AV-54
< SERVICE INFORMATION >
AUDIO ANTENNA
Location of Antenna
INFOID:0000000003533690
Window Antenna RepairINFOID:0000000003533691
ELEMENT CHECK
1. Attach probe circuit tester (ohm setting) to anten

Page 614 of 3061

INFINITI QX56 2007 Factory Service Manual AV-74
< SERVICE INFORMATION >
NAVIGATION SYSTEM
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

AV-74
< SERVICE INFORMATION >
NAVIGATION SYSTEM
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 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 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-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 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.
• 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.
SEL685V
SEL686V
SKIA0613E
SEL526V

Page 647 of 3061

INFINITI QX56 2007 Factory Service Manual NAVIGATION SYSTEM
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The Error History displays the time and place of the most recent occurrence of that error. However, take note
of the fo

NAVIGATION SYSTEM
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The Error History displays the time and place of the most recent occurrence of that error. However, take note
of the following points.
• Correct time of the error occurrence may not be displayed when the GPS antenna substrate within the NAVI
control unit has malfunctioned.
• Place of the error occurrence is represented by the position of the current-location mark at the time when the
error occurred. If the current-location mark has deviated from the correct position, then the place of the error
occurrence may be located correctly.
• The maximum number of occurrences which can be stored is 50. For the 51st and later occurrences, the dis-
played number remains 50.
When a reproducible malfunction occurred but its cause cannot be identified because several errors are
present, record the item, number and place (longitude/latitude) of error occurrence (or delete the Error His-
tory), then turn the ignition switch from OFF to ON to reproduce the malfunction. Check the Error History to
find the items which show an increased number of occurrences, and diagnose the item.
Error itemPossible causes
Example of symptom
Action/symptom
Gyro sensor
disconnectedCommunications malfunction between NAVI control unit and inter-
nal gyro.
• Navigation location detection performance has
deteriorated.
(Angular velocity cannot be detected.) • Perform self-diagnosis.
• When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio interfer-
ence.
GPS discon-
nectedCommunication error between NAVI control unit and internal GPS
substrate.• Navigation location detection performance has
deteriorated.
(Location correction using GPS is not per-
formed.)
• GPS receiving status remains gray. • Perform self-diagnosis.
• When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio interfer-
ence.
GPS trans-
mission ca-
ble
malfunctionMalfunctioning transmission wires to NAVI control unit and internal
GPS substrate.
• During self-diagnosis, GPS diagnosis is not
performed. • Perform self-diagnosis.
• When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio interfer-
ence.
GPS input
line connec-
tion errorMalfunctioning receiving wires to NAVI control unit and internal
GPS substrate.• Navigation location detection performance has
deteriorated.
(Location correction using GPS is not per-
formed.)
• GPS receiving status remains gray. • Perform self-diagnosis.
• When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio interfer-
ence.
GPS TCX0
over
GPS TCX0
underOscillating frequency of the GPS substrate frequency synchronizing
oscillation circuit exceeded (or below) the specification
• Navigation location detection performance has
deteriorated.
(Location correction using GPS is not per-
formed.)
• GPS receiving status remains gray. • Perform self-diagnosis.
• When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio interfer-
ence, or the control unit may have been subjected to excessively
high or low temperatures.
GPS ROM
malfunction
GPS RAM
malfunctionContents of ROM (or RAM) in GPS substrate are malfunctioning. • Location detection accuracy of the navigation
system will deteriorate, depending on the error
area in the memory, because GPS cannot
make correct positioning.
(Location correction using GPS is not per-
formed.) • Perform self-diagnosis.
• When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio interfer-
ence.

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