tires NISSAN 350Z 2007 Z33 Audio Visual, Navigation And Telephone System

NAVIGATION SYSTEM
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Revision: 2006 November2007 350Z
NAVIGATION SYSTEMPFP:25915
System DescriptionNKS000CX
For Navigation System operation information, refer to Navigation System Owner's Manual.
LOCATION DETECTION PRINCIPLE
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 sensor)

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 DVD-ROM,
which is stored in the DVD-ROM drive (map-matching), and indi-
cated on the screen as a current-location mark. More accurate data is judged and used by comparing vehicle
position detection results found by the GPS with the result by map-matching.
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 correction function has been adopted.

Travel direction
Change in the travel direction of the vehicle is calculated by a
gyroscope (angular velocity sensor) and a GPS antenna (GPS
information). They have both advantages and disadvantages.
More accurate traveling direction is detected because priorities are set for the signals from these two
devices according to the situation.
SKIB1058E
SEL684V
Type Advantage Disadvantage
Gyroscope (angular velocity sen-
sor)Can detect the vehicle's turning angle quite
accurately.Direction errors may accumulate when vehicle is
driven for long distances without stopping.
GPS antenna (GPS information)Can detect the vehicle's travel direction
(North/South/East/West).Correct direction cannot be detected when vehi-
cle speed is low.

NAVIGATION SYSTEM
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Revision: 2006 November2007 350Z
NAVIGATION
Steering Angle Adjustment
The steering angle output value detected by the gyroscope can be
adjusted.
Speed Calibration
Usually the automatic distance correction function adjusts the mal-
function in distance caused by the tires wearing down or the tire
pressure change. If prompt adjustment is necessary when the tire
chains are installed etc., perform this procedure.
SKIB3684E
SKIB3685E

AV-96
NAVIGATION SYSTEM
Revision: 2006 November2007 350Z
DVD-ROM
ROUTE CALCULATION AND VISUAL GUIDANCE
The GPS indicator on the screen
remains gray.GPS signals cannot be received depending on
the vehicle location, such as in a parking
garage, on a road that has numerous tall build-
ings, etc.Drive on an open, straight road for a while.
A sufficient amount of GPS satellites is not
available.Please wait for the satellites to move to loca-
tions available for your navigation system.
The location of the vehicle mark is
misaligned from the actual posi-
tion.When using tire chains or replacing the tires,
speed calculations based on the speed sensor
may be incorrect.Drive the vehicle for a while [at approximately
30 km/h (19 MPH) for about 30 minutes] to
automatically correct the vehicle's mark posi-
tion. If this does not correct the vehicle mark
position, contact a NISSAN dealer or qualified
workshop.
The map data has a mistake or is incomplete
(the vehicle mark position is always misaligned
in the same area).Updated road information will be included in
the next version of the DVD-ROM. Symptom Possible cause Possible solution
Symptom Possible cause Possible solution
The message “Error” appears. The DVD-ROM is dirty or partially damaged.Check the DVD-ROM and wipe it clean with a
soft cloth.
In you see any damage, replace the DVD-
ROM.
Symptom Possible cause Possible solution
In the auto re-route calculation,
waypoints are not included.Waypoints that you have already passed are
not included in the auto re-route calculation.If you want to go to that waypoint again, you
need to edit the route.
Route information is not dis-
played.Route calculation has not yet been performed.Set the destination and perform route calcula-
tion.
You are not driving on the suggested route. Drive on the suggested route.
Route guidance is set to off. Turn on the route guidance.
The auto re-route calculation (or
detour calculation) suggests the
same route as the one previously
suggested.Route calculations took priority conditions into
consideration, but the same route was calcu-
lated.This is not a malfunction.
A waypoint cannot be added.Five waypoints are already set on the route,
including the ones that you have already
passed.A maximum of 5 waypoints can be set on the
route. If you want to go to 6 or more waypoints,
perform route calculations several times, as
necessary.
The suggested route is not dis-
played.Roads near the destination cannot be calcu-
lated.Reset the destination to a main or ordinary
road, and recalculate the route.
The starting point and destination are too close. Set a more distant destination.
The starting point and destination are too far
away.Divide your trip by selecting one or two inter-
mediate destinations, and perform a global
route calculation based on multiple route cal-
culations.
There are time restricted roads (day of week,
time) near the current vehicle location or desti-
nation.Set [Use Time Restricted Roads] to off.
The part of the route that you have
already passed is deleted.A route is managed by sections between way-
points. If you passed the first waypoint, the sec-
tion between the starting point and the waypoint
is deleted. (It may not be deleted depending on
the area.)This is not a malfunction.