2007 INFINITI QX56 Factory Service Manual

remove seats service reset four wheel drive length deactivate passenger airbag battery

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INFINITI QX56 2007 Factory Service Manual DVD ENTERTAINMENT SYSTEM
AV-69
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WKWA3590E

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INFINITI QX56 2007 Factory Service Manual AV-70
< SERVICE INFORMATION >
DVD ENTERTAINMENT SYSTEM
Trouble Diagnosis
INFOID:0000000003533703
Power Supply Circuit InspectionINFOID:0000000003533704
1.CHECK FUSES
Check that the following fuses are

AV-70
< SERVICE INFORMATION >
DVD ENTERTAINMENT SYSTEM
Trouble Diagnosis
INFOID:0000000003533703
Power Supply Circuit InspectionINFOID:0000000003533704
1.CHECK FUSES
Check that the following fuses are not blown.
Symptom Possible causes Repair order
DVD player inoperative1. Power supply
2. Ground circuit
3. Audio enable circuit
4. DVD enable signal
5. Audio enable signal
6. DVD player
7. Audio unit1. Refer to AV- 7 0 , "
Power Supply Circuit Inspection".
2. Refer to AV- 7 0 , "
Power Supply Circuit Inspection".
3. Check audio enable circuits for open or short be-
tween audio unit terminals 39, 40 and DVD player
terminals 11, 9.
4. Push power switch of DVD player and verify approx.
5V is present at terminal 39 of audio unit.
5. Push power switch of DVD player and verify approx.
5V is present at terminal 9 of DVD player.
6. Remove DVD player for repair.
7. Remove audio unit for repair.
No sound when playing
DVD1. Audio signal circuits
2. DVD player
3. Audio unit1. Check audio signal circuits for open or short be-
tween DVD player terminals 1, 2, 3 and 4 and audio
unit terminals 34, 35, 36 and 37.
2. Remove DVD player for repair.
3. Remove audio unit for repair.
Video monitor is inopera-
tive/does not operate prop-
erly1. Power supply
2. Video monitor ground circuit
3. Video circuits
4. Data signal
5. Video monitor
6. DVD player1. Operate DVD player and verify battery positive volt-
age is present at terminals 11 and 12 of video moni-
tor. Verify approximately 5 volts is present at terminal
10 of video monitor.
2. Check video monitor ground circuits between DVD
player terminals 19 and 27 and video monitor termi-
nals 1 and 2.
3. Check video circuits between DVD player terminals
23 and 24 and video monitor terminals 7 and 8.
4. Check data signal circuit for open or short between
DVD player terminal 29 and video monitor terminal
5.
5. Remove video monitor for repair.
6. Remove DVD player for repair.
DVD remote control is inop-
erative/does not operate
properly1. Data signal
2. DVD player remote control batteries
3. DVD player remote control
4. Video monitor1. Check data signal circuit for open or short between
DVD player terminal 28 and video monitor terminal
6.
2. Replace DVD player remote control batteries.
3. Replace DVD player remote control.
4. Remove video monitor for repair.
Headphones inoperative 1. Headphone batteries
2. Headphones
3. Rear audio remote control unit1. Replace headphone batteries.
2. Replace headphones.
3. Replace rear audio remote control unit.
Snowy video/poor audio 1. Harness or connectors
2. DVD player1. Check harness and connectors for open or short.
2. Check DVD player.
Snowy video (audio OK) 1. Harness or connectors
2. DVD player1. Check harness and connectors for open or short.
2. Check DVD player.
No video (audio OK) 1. Harness or connectors
2. DVD player
3. Video monitor1. Check harness and connectors for open or short.
2. Check DVD player.
3. Check video monitor.
Dim video (audio OK) 1. Harness or connectors
2. DVD player
3. Video monitor1. Check harness and connectors for open or short.
2. Check DVD player.
3. Check video monitor.

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INFINITI QX56 2007 Factory Service Manual DVD ENTERTAINMENT SYSTEM
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OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fu

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INFINITI QX56 2007 Factory Service Manual AV-72
< SERVICE INFORMATION >
DVD ENTERTAINMENT SYSTEM
3. Remove the DVD player screws.
4. Disconnect DVD connectors and remove DVD player.
Installation
Installation is in reverse order of removal.
VI

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INFINITI QX56 2007 Factory Service Manual NAVIGATION SYSTEM
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NAVIGATION SYSTEM
System DescriptionINFOID:0000000003533706
NOTE:
Refer to NAVI System Owners Manual for system operati

NAVIGATION SYSTEM
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NAVIGATION SYSTEM
System DescriptionINFOID:0000000003533706
NOTE:
Refer to NAVI System Owner's Manual for system operation.
The navigation system periodically calculates the vehicle's current
position according to the following three signals: Travel distance of
the vehicle as determined by the vehicle speed sensor, turning angle
of the vehicle as determined by the gyroscope (angular velocity sen-
sor), and the direction of vehicle travel as determined by the GPS
antenna (GPS information).
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data read from the map DVD-
ROM, which is stored in the DVD-ROM drive (map-matching), and
indicated on the screen with a current-location mark.
By comparing the vehicle position detection results found by the
GPS and by map-matching, more accurate vehicle position data can
be used.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.
TRAVEL DISTANCE
Travel distance calculations are based on the vehicle speed sensor input signal. Therefore, the calculation
may become incorrect as the tires wear down. To prevent this, an automatic distance fine adjustment function
has been adopted. Adjustments can be made in extreme cases (such as driving with tire chain fitted on tires).
Refer to AV-103, "
Confirmation/Adjustment Mode".
TRAVEL DIRECTION
Change in the travel direction of the vehicle is calculated by a gyroscope (angular velocity sensor) and a GPS
antenna (GPS information). As the gyroscope and GPS antenna have both merit and demerit, input signals
from them are prioritized in each situation. However, this order of priority may change in accordance with more
detailed travel conditions so that the travel direction is detected more accurately.
MAP-MATCHING
WKIA1371E
SEL684V
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.

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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

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INFINITI QX56 2007 Factory Service Manual NAVIGATION SYSTEM
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• Position correction by GPS is not available while the vehicle is stopped.
COMPONENT DESCRIPTION
NAVI Control Unit
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INFINITI QX56 2007 Factory Service Manual AV-76
< SERVICE INFORMATION >
NAVIGATION SYSTEM
Component Parts Location
INFOID:0000000003533708
WKIA4571E
1. Fuse block (J/B) 2. Fuse and fusible link box 3. Combination switch
M28
4. Combination met

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