navigation update NISSAN PATROL 2004 Electronic Repair Manual

Example of Symptoms Judged Not Malfunction
BASIC OPERATION
Symptom Cause Remedy
No image is shown. Display brightness adjustment is set fully to
DARK side. Adjust the display brightness.
No guide sound is heard. Audio
guide volume is too low or too high. Volume control is set to OFF, MIN or MAX. Adjust the audio guide volume.
Audio guidance is not available while the
vehicle is driving on a dark pink route.
System is not malfunction.
Screen is too dark. Motion of the
image is too slow. Temperature inside the vehicle is low. Wait until the temperature inside the vehicle
reaches the proper temperature.
Small black or bright spots appear
on the screen. Symptom peculiar to a liquid crystal display. System is not malfunction.
VEHICLE MARK
Symptom Cause Remedy
Map screen and BIRDVIEW TName
of the place vary with the screen. Some thinning of the character data is done
to prevent the display becoming to complex.
In some cases and in some locations, the
display contents may differ. The same place
name, street name, etc. may not be dis-
played every time on account of the data pro-
cessing.
System is not malfunction.
Vehicle mark is not positioned cor-
rectly. Vehicle is transferred by ferry or by towing
after its ignition switch is turned to OFF. Drive the vehicle for a while in the GPS sat-
ellite signal receiving condition.
Screen will not switch to nighttime
mode after the lighting switch is
turned ON. The daytime screen is selected by the
ªSWITCH SCREENSº when the last time the
screen dimming setting is done.
Switching between daytime/nighttime screen
may be inhibited by the automatic illumination
adjustment function.
Perform screen dimming and select the night-
time screen by ªSWITCH SCREENSº.
Map screen will not scroll in accor-
dance with the vehicle travel. Current location is not displayed. Push ªMAPº switch to display the current
location.
Vehicle mark will not be shown. Current location is not displayed. Push ªMAPº switch to display the current
location.
Accuracy indicator (GPS satellite
mark) on the map screen stays gray. GPS satellite signal is intercepted because
the vehicle is in or behind a building.
Move the vehicle out to an open space.
GPS satellite signal cannot be received
because an obstacle is placed on top of the
display. Do not place anything in the center on top of
the display.
GPS satellites are located badly. Wait until the location becomes better.
Vehicle location accuracy is low. Accuracy indicator (GPS satellite mark) on
the map screen stays gray.
Current location is not determined.
Vehicle speed setting by the vehicle speed
pulse has been deviated (advanced or
retarded) from the actual vehicle speed
because tire chain is ®tted or the system has
been used on another vehicle. Drive the vehicle for a while [for approx. 30
minutes at approx. 30 km/h (19 MPH)] and
the deviation will be automatically adjusted. If
advancement or retard still occur, perform the
distance adjustment by ªCONFIRMATION/
ADJUSTMENTº mode of diagnosis function.
Map data has error or omission. (Vehicle
mark is always deviated to the same posi-
tion.) As a rule, an updated map DVD-ROM will be
released once a year.
NAVIGATION SYSTEM
EL-4218

ROUTE SEARCHING
Symptom Cause Remedy
No route is shown. No road to be searched is found around the
destination.
Find wider road (orange road or wider)
nearby and reset the destination and passing
points onto it. Take care of the traveling
direction when there are separate up and
down roads.
Starting point and the destination are too
close. Set the destination at more distant point.
Conditional traffic regulation (day of the
week/time of the day) is set at the area
around the current location or the destination. Turn the time-regulating search conditions
OFF. Turn ªAvoid regulation timeº in the
search conditions OFF.
Indicated route is intermittent. In some areas, highways (gray routes) are
not used for the search (Note). Therefore, the
route to the current position or the passing
points may be intermittent. System is not malfunction.
When the vehicle has passed the
recommended route, it is deleted
from the screen. A recommended route is controlled by each
section. When the vehicle has passed the
passing point 1, then the map data from the
starting point up to the passing point 1 will be
deleted. (The data may remain undeleted in
some area.)
System is not malfunction.
Detouring route is recommended. In some areas, highways (gray routes) are
not used for the search (Note). Therefore,
detour route may be recommended.
Set the route closer to the basic route (gray
route).
A detour route may be shown when some
traffic regulation (one-way traffic, etc.) is set
at the area around the starting point or the
destination. Slightly move the starting point or the
destination, or set the passing point on the
route of your choice.
In the area where highways (gray routes) are
used for the search, left turn has priority
around the current location and the destina-
tion (passing points). For this reason, the rec-
ommended route may be detouring. System is not malfunction.
Landmarks on the map do not match
the actual ones. This can be happen due to omission or error
in the map data. As a rule, an updated map DVD-ROM will be
released once a year. Wait until the latest
map has become available.
Recommended route is far from the
starting point, passing points, and
destination. Starting point, passing points, and destination
of the route guide were set far from the
desired points because route searching data
around these area were not stored. Reset the destination onto the road nearby. If
this road is one of the highways (gray
routes), an ordinary road nearby may be dis-
played as the recommended route.
NOTE:
Except for the ordinance-designated cities and the prefectural capitals (Applicable areas may be changed in
the updated map disc.)
NAVIGATION SYSTEM
Example of Symptoms Judged Not Malfunction
(Cont'd)
EL-4220

THE CURRENT LOCATION MARK IS IN A RIVER OR THE SEA
The navigation system moves the current location mark with no distinction between land and rivers or sea. If
the location mark is somehow out of place, it may appear that the vehicle is driving in a river or the sea.
WHEN DRIVING ON THE SAME ROAD, SOMETIMES THE CURRENT LOCATION MARK IS IN
THE RIGHT PLACE AND SOMETIMES IT IS THE WRONG PLACE
The conditions of the GPS antenna (GPS data) and gyroscope (angular speed sensor) change gradually.
Depending on the road traveled and the operation of the steering wheel, the location detection results will be
different. Therefore, even on a road on which the location has never been wrong, conditions may cause the
vehicle mark to deviate.
LOCATION CORRECTION BY MAP MATCHING IS SLOW
+The map matching function needs to refer to the data of the surrounding area. It is necessary to drive some
distance for the function to work.
+ Because map matching operates on this principle, when there are many roads running in similar direc-
tions in the surrounding area, no matching determination may be made. The location may not be corrected
until some special feature is found.
ALTHOUGH THE GPS RECEIVING DISPLAY IS GREEN, THE VEHICLE MARK DOES NOT
RETURN TO THE CORRECT LOCATION
+The GPS accuracy has an error of about 10 m (30 ft). In some cases the current location mark may not
be on the correct street, even when GPS location correction is done.
+ The navigation system compares the results of GPS location detection with the results from map-match-
ing location detection. The one which is determined to have higher accuracy is used.
+ GPS location correction may not be performed when the vehicle is stopped.
THE NAME OF THE CURRENT PLACE IS NOT DISPLAYED
The current place name may not be displayed if there are no place names displayed on the map screen.
CONTENTS OF THE DISPLAY DIFFER FOR THE BIRDVIEW TAND THE (FLAT) MAP SCREEN
Difference of the BIRDVIEW Tscreen from the ¯at map screen are as follows.
+ The current place name displays names which are primarily in the direction of vehicle travel.
+ The amount of time before the vehicle travel or turn angle is updated on the screen is longer than for the
(¯at) map display.
+ The conditions for display of place names, roads, and other data are different for nearby areas and for
more distant areas.
+ Some thinning of the character data is done to prevent the display becoming to complex. In some cases
and in some locations, the display contents may differ.
+ The same place name, street name, etc. may be displayed multiple times.
NAVIGATION SYSTEM
Example of Symptoms Judged Not Malfunction
(Cont'd)
EL-4225