2004 NISSAN PATROL tires

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Page 257 of 579

NISSAN PATROL 2004 Electronic Repair Manual System Description
OUTLINE
The navigation system periodically calculates the vehicles current
position according to the following three signals: Travel distance of
the vehicle as determined by the ve

System Description
OUTLINE
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), and the direction of vehicle travel as determined
by the GPS antenna (GPS information).
The current position of the vehicle is then identi®ed 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 sen-
sor input signal. Therefore, the calculation may become incorrect
as the tires wear down. To prevent this, an automatic distance ®ne
adjustment 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). As the gyroscope and GPS antenna have both merit
and demerit, input signals from them are prioritized in each situa-
tion. However, this order of priority may change in accordance with
more detailed travel conditions so that the travel direction is
detected more accurately.
Type Advantage Disadvantage
Gyroscope (angular velocity sensor) +
Can detect the vehicle's turning angle
quite accurately. +
Direction errors may accumulate when
the 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 the vehicle speed is low.
SKIA0370E
SEL684V
NAVIGATION SYSTEM
EL-4162

Page 289 of 579

NISSAN PATROL 2004 Electronic Repair Manual Diagnosis item Display Condition Remarks
Vehicle speed ON Vehicle spee
d > 0 km/h (0 MPH)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal.
OFF Vehicle spee
d = 0 km/h (0 MP

Page 318 of 579

NISSAN PATROL 2004 Electronic Repair Manual Cause (condition) Driving condition Remarks (correction, etc.)
Place In a parking lot
SEL709V
When driving in a parking lot, or
other location where there are no
roads on the map, matching may
place t

Cause (condition) Driving condition Remarks (correction, etc.)
Place In a parking lot
SEL709V
When driving in a parking lot, or
other location where there are no
roads on the map, matching may
place the vehicle mark on a nearby
road. When the vehicle returns to the
road, the vehicle mark may have
deviated from the correct location.
When driving in circle or turning the
steering wheel repeatedly, direction
errors accumulate, and the vehicle
mark may deviate from the correct
location.
If after travelling about 10 km (6
miles) the correct location has not
been restored, perform location cor-
rection and, if necessary, direction
correction.
Turn table
SEL710V
When the ignition switch is OFF, the
navigation system cannot get the
signal from the gyroscope (angular
speed sensor). Therefore, the dis-
played direction may be wrong and
the correct road may not be easily
returned to after rotating the vehicle
on a turntable with the ignition OFF.
Slippery roads On snow, wet roads, gravel, or other
roads where tires may slip easily,
accumulated mileage errors may
cause the vehicle mark to deviate
from the correct road.
Slopes When parking in sloped garages,
when travelling on banked roads, or
in other cases where the vehicle
turns when tilted, an error in the turn-
ing angle will occur, and the vehicle
mark may deviate from the road.
Map data Road not displayed on the map
screen
SEL699V
When driving on new roads or other
roads not displayed on the map
screen, map matching does not func-
tion correctly and matches the loca-
tion to a nearby road. When the
vehicle returns to a road which is on
the map, the vehicle mark may devi-
ate from the correct road.
Different road pattern (Changed due
to repair)
ELK0201D
If the road pattern stored in the map
data and the actual road pattern are
different, map matching does not
function correctly and matches the
location to a nearby road. The
vehicle mark may deviate from the
correct road.
Vehicle Use of tire chains When tire chains are used, the mile-
age is not correctly detected, and the
vehicle mark may deviate from the
correct road.Drive the vehicle for a while. If the
distance is still deviated, adjust it by
using the distance adjustment func-
tion. (If the tire chain is removed,
recover the original value.)
NAVIGATION SYSTEM
Example of Symptoms Judged Not Malfunction
(Cont'd)
EL-4223

Page 471 of 579

NISSAN PATROL 2004 Electronic Repair Manual <SUPPLEMENT-IV> GENERALINFORMATIONSECTION
GI
OUTLINE OF MODIFICATIONS:
+Manual transmission gear ratio has been modi®ed corresponding to the increase of ZD30DDTi engin

Page 478 of 579

NISSAN PATROL 2004 Electronic Repair Manual For Israel
JN1TESY61 5XXXXXXX
Vehicle serial number
Manufacturing plant
X: Hiratsuka
Model year
5: 2005 model year
S: Long wheelbase (4WD)
Engine type
E: ZD30DDTi
Body type
T: Station Wagon K: Hardtop

Page 479 of 579

NISSAN PATROL 2004 Electronic Repair Manual Wheels & Tires
FOR THE MIDDLE EAST
Road wheel
Size 16 x 6JJ 16 x 8JJ* 17 x 8JJ
Offset mm (in) 35 (1.38) 10 (0.39) 10 (0.39)
Tire size 235/80R16 109S,
235/80R16LT265/70R16 112S,
275/70R16,
265/70R16LT2

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