Nissan Pathfinder (2012 year). Instruction — part 58
AV-282
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
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 instructionly.
CAUTION:
The road map data is based on data stored on the HDD.
• 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 on the HDD, 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 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 waves 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
August 2012
2012 Pathfinder
AV
NAVIGATION SYSTEM
AV-283
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
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, 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.
• Position correction by GPS is not available while the vehicle is stopped.
August 2012
2012 Pathfinder
AV-284
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
NAVIGATION SYSTEM
Component Parts Location
INFOID:0000000007347817
1.
Steering wheel audio control switch-
es
2.
Front tweeter LH M109
3.
AV control unit M23, M37, M39, M44,
M48, M71, M72
4.
A/C and AV switch assembly M98
5.
Display unit M92
6.
Front tweeter RH M111
AWNIA2301ZZ
August 2012
2012 Pathfinder
AV
NAVIGATION SYSTEM
AV-285
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Component Description
INFOID:0000000007347818
7.
Aux. jack M85
8.
Compact Flash insert slot
9.
Front door speaker
LH D12
RH D112
10. Rear door speaker
LH D207
RH D307
11. Rear tweeter
LH D208
RH D308
12. Subwoofer B72
13. BOSE speaker amp B74, B75 (locat-
ed under driver seat)
14. Rear view camera D551
15. Microphone R8
Part name
Description
AV control unit
• Controls each operation of the navigation system
• DVD-ROM drive is built in
• Voice guidance signal is output to BOSE speaker amp.
BOSE speaker amp.
Voice guidance signal is input from AV control unit, and it is output to speakers.
Tweeter
Voice guidance signal from BOSE speaker amp. is output.
Steering wheel audio control switches
• Each operation of navigation system can be performed
• Switch operating signal is output to AV control unit
Microphone
Sends voice signals to AV control unit
GPS antenna
GPS signal is received and is output to AV control unit.
August 2012
2012 Pathfinder
AV-286
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
REAR VIEW MONITOR SYSTEM
REAR VIEW MONITOR SYSTEM
System Diagram
INFOID:0000000007347819
System Description
INFOID:0000000007347820
When the shift selector is in the R position, the display unit receives camera image signals from the rear view
camera which shows a view to the rear of the vehicle. Lines which indicate the vehicle clearance and dis-
tances are also displayed.
AWNIA2302GB
August 2012
2012 Pathfinder
AV
REAR VIEW MONITOR SYSTEM
AV-287
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Component Parts Location
INFOID:0000000007347821
1.
Steering wheel audio control switch-
es
2.
Front tweeter LH M109
3.
AV control unit M23, M37, M39, M44,
M48, M71, M72
4.
A/C and AV switch assembly M98
5.
Display unit M92
6.
Front tweeter RH M111
AWNIA2301ZZ
August 2012
2012 Pathfinder
AV-288
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
REAR VIEW MONITOR SYSTEM
Component Description
INFOID:0000000007347822
7.
Aux. jack M85
8.
Compact Flash insert slot
9.
Front door speaker
LH D12
RH D112
10. Rear door speaker
LH D207
RH D307
11. Rear tweeter
LH D208
RH D308
12. Subwoofer B72
13. BOSE speaker amp B74, B75 (locat-
ed under driver seat)
14. Rear view camera D551
15. Microphone R8
Part name
Description
AV control unit
• Receives reverse signal from back-up lamp relay
• Sends camera ON signal to rear view camera
Rear view camera
• Receives camera ON signal from AV control unit
• Sends image signal to the display unit
Display unit
• Receives image signal from rear view camera
August 2012
2012 Pathfinder
AV
DVD PLAYER
AV-289
< SYSTEM DESCRIPTION >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
DVD PLAYER
System Diagram
INFOID:0000000007347823
System Description
INFOID:0000000007347824
The DVD entertainment system consists of the following components
• AV control unit
• Display unit
• DVD player
• Video monitor
• A/C and AV switch assembly
• Steering wheel audio control switches
• BOSE speaker amp.
• Front tweeters
• Front door speakers
• Rear tweeters
• Rear door speakers
• Subwoofer
When the DVD entertainment system is on, video signals are sent from the DVD player to the video monitor.
Audio signals are sent to the AV control unit. Audio signals can be directed through wireless infrared head-
phones or through the BOSE speaker amp. to the vehicle speakers. Refer to the Owner's Instruction for complete
DVD entertainment system operating instructions.
ALNIA0561GB
August 2012
2012 Pathfinder
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст