2001 INFINITI QX4 Factory Service Manual

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Page 1609 of 2395

INFINITI QX4 2001 Factory Service Manual EXAMPLE OF CURRENT VEHICLE POSITION MARKER ERROR=NBEL0235S02The navigation system reads the vehicle distance and steering angle data. Because the vehicle is moving,
there will be an error in the curre

Page 1610 of 2395

INFINITI QX4 2001 Factory Service Manual Possible cause Drive condition Service procedure
AreaSlippery road surfaceOn wet, icy, or gravel road where
frequent wheel slippage occurs, dis-
tance calculations may be errone-
ous. The position mar

Possible cause Drive condition Service procedure
AreaSlippery road surfaceOn wet, icy, or gravel road where
frequent wheel slippage occurs, dis-
tance calculations may be errone-
ous. The position marker may show
the vehicle to be in inaccurate posi-
tion.
If the position marker does not
move to the correct position
even after the vehicle has been
driven approximately 10 km (6
miles), perform ªADJUST CUR-
RENT LOCATIONº (EL-411). If
necessary, perform ªSPEED
CALIBRATIONº (EL-409). Slanted areaHilly areas where the road has
banked curves. When the vehicle
enters these banked curves, there
may be an error in steering angle
measurement. The position marker
may show the vehicle to be in inac-
curate position.
Map
dataMap display for a given road does not appear.
SEL699V
When the vehicle is driven on a
newly constructed road that does
not appear on the existing map.
Map marking and calibration are not
possible. The position marker may
indicate inaccurate position in close
proximity to the actual position.
Subsequently, when the vehicle is
driven on a road which is available
as map data, the position marker
may still indicate an inaccurate posi-
tion.
The vehicle is driven on a road whose course
has been altered (usually to improve the road or
to eliminate some hazard).
SEL700V
When the map data shown on the
display and the actual conditions are
different. Map matching will not be
possible. The position marker may
indicate inaccurate position in close
proximity to the actual position. If
the vehicle is driven on the indicated
road, further errors may occur.
Vehicle Use of tire chains (Stormy weather)Tire chains will affect distance sens-
ing. The position marker may indi-
cate inaccurate position.If the position marker does not
move to the correct position
even after the vehicle has been
driven approximately 10 km (6
miles), perform ªSPEED CALI-
BRATIONº (EL-409). After
removing the tire chains, sens-
ing accuracy may recover by
itself.
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NAVIGATION SYSTEM
This Condition is Not Abnormal (Cont'd)
EL-425

Page 1611 of 2395

INFINITI QX4 2001 Factory Service Manual Possible cause Drive condition Service procedure
Opera-
tionDriving immediately after starting engine.The gyro (angular velocity sensor)
needs about 15 seconds after the
engine is started to precisely

Page 1612 of 2395

INFINITI QX4 2001 Factory Service Manual Possible cause:
Ð: Vehicle running ---: IndicationDrive condition Service procedure
Road
shapesY-intersection
SEL703V
In Y-intersections with a very
gradual change in course, a direc-
tional sensing

Page 1613 of 2395

INFINITI QX4 2001 Factory Service Manual Possible cause:
Ð: Vehicle running ---: IndicationDrive condition Service procedure
Loca-
tionParking lot or similar area
SEL709V
When the vehicle is driven in a park-
ing lot or similar area, such a

Possible cause:
Ð: Vehicle running ---: IndicationDrive condition Service procedure
Loca-
tionParking lot or similar area
SEL709V
When the vehicle is driven in a park-
ing lot or similar area, such as in an
area not normally marked as a road
on map, during map matching, the
system may select nearby roads.
This error may continue after the
vehicle exits the parking area and
begins to run on ordinary roads.
Vehicle operation in a parking area
may involve frequent turns and up
and/or down operation. Directional
sensing errors may occur leading to
subsequent route and position mis-
takes.
Turntable
SEL710V
When the ignition switch is OFF (the
usual situation when the vehicle is
on a turntable), the navigation sys-
tem receives no data from the gyro
(angular velocity sensor). When the
turntable rotates, no directional
change is sensed. During subse-
quent vehicle operation, directional
and route errors may occur.
Position marker displays a completely different location
In circumstances such as those described below, GPS signal reception conditions may result in an erroneous
position of the position marker. Perform ªADJUST CURRENT LOCATIONº (EL-411).
NOTE:
IWhen GPS satellite signal reception conditions are poor, the position of position marker may be errone-
ous. If correction is not made immediately, the position marker error will be compounded and a completely
different location will be indicated. In an area where GPS satellite signal reception conditions are good,
the system can be returned to normal operation.
IThe vehicle is driven aboard a car ferry or is towed for some distance with the ignition switch OFF. Vehicle
movement is not sensed. Current location calculations do not occur and current location data does not
appear on the display screen. Use GPS to accurately determine actual vehicle position. The system can
be returned to normal operation when the GPS satellite signal reception conditions are good.
Position marker jumps
In circumstances such as those described below, the position marker may jump as a result of automatic cur-
rent location corrections made by the system.
During map matching
IDuring map matching, the position marker may jump from one spot to another. In this case, it may be cor-
rected to a wrong road or to an area where no road exist.
GPS location correcting
IVehicle current location is sensed using the GPS data. Positional calibration is performed. The position
marker continues to be in the wrong position. It may jump about from one area of the screen to another.
In this case, it may be corrected to a wrong road or to an area where no road exist.
Position marker indicates that the vehicle is in the middle of an ocean or large river
The navigation system does not distinguish between land and water surfaces. In some cases, a position
marker error may cause the display to show the vehicle above a water surface.
Position of position marker varies when the vehicle is repeatedly operated on the same road
Driving lane and steering wheel movement results in a variety of different positions of the position mark when
traveling on the same road based on sensing results by the GPS antenna and gyro (angular velocity sensor).
Slow locational correction using map matching
IThe map matching function requires verification of local data. To make the map matching function, some
distance needs to be driven.
IThe map matching function may not provide accurate performance in an area where there are numerous
parallel roads. Until the system judges the road characteristics, an incorrect position may be shown.
NAVIGATION SYSTEM
This Condition is Not Abnormal (Cont'd)
EL-428

Page 1614 of 2395

INFINITI QX4 2001 Factory Service Manual GPS signal reception conditions are good. However, the position mark does not return to its proper
position.
Ihe system senses the vehicle location with an error of approximately 100 m (328 ft). Due t

GPS signal reception conditions are good. However, the position mark does not return to its proper
position.
Ihe system senses the vehicle location with an error of approximately 100 m (328 ft). Due to the limitation
of precision, the position marker may be inaccurate even if the GPS signal reception condition is good.
IThe navigation system uses GPS data to determine vehicle location. GPS data is compared with other
locational sensing data during the map matching process. The system decides which data is more pre-
cise and uses that data.
IWhen the vehicle is stationary, GPS data cannot be used to make system corrections.
Area designations on the map display and the BIRDVIEWTdisplay differ.
To prevent the display from becoming congested, alphanumeric information is abridged.
[No problem]
Correct position of your vehicle is not displayed.
Vehicle position changed after ignition key was turned to the OFF position (Vehicle is transported on car ferry,
car train, or by some other means).
[Operate vehicle for short time under GPS receiving conditions.]
The display does not change to night-time mode even though the light switch has been turned ON.
Lights have been turned on. In ªDISPLAY CHANGEº mode, night-time mode on display has been switched to
day-time mode and still is.
[Turn lights on again. Set the display to night-time mode. Refer to EL-412.]
Map does not scroll even though the position of your vehicle is changed.
Present area does not appear on the display.
[Press the ªMAPº switch.]
Vehicle position marker does not appear.
Present area does not appear on the display.
[Press the ªMAPº switch.]
The map surface precision display (GPS satellite marker) still remains gray.
Vehicle is parked inside a building or in the shadow of a large building. This intercepts the GPS signal.
[Move the vehicle to a more open position.]
GPS signal is not received because objects are placed on the rear parcel shelf.
[Remove objects from the rear parcel shelf.]
GPS satellite position is bad.
[Wait until GPS satellite position improves.]
Vehicle position precision is bad.
The map surface precision display (GPS satellite marker) still remains gray.
[Refer to ªThe map surface precision display (GPS satellite marker) still remains grayº item (Symptoms)]
Vehicle speed and elapsed distance is calculated from the vehicle speed pulse. This pulse is dependent upon
tire size. If tire chains are used on the vehicle, accuracy will be affected (pulse rate will be too fast or too slow).
The same is true if the system installed to your vehicle is removed and installed on another vehicle.
[Drive the vehicle at a speed higher than 30 km/h (19 MPH) for approximately 30 minutes. Automatic read-
justment should occur. If it does not (remains too fast or too slow), distance calibration is required. Or, drive
the vehicle for a short distance. Perform ªSPEED CALIBRATIONº (EL-409). After removing the tire chains,
sensing accuracy may recover by itself.]
Bad map data or system defect (same error consistently occurs in the same area)
ROUTE SEARCH/ROUTE GUIDENBEL0235S03IIf the present location or the destination location is displayed in the avoid area, it is not possible to search
routes.
IIf the avoid area is set to wide range area, it may not be possible to find appropriate routes or search for
alternate routes.
IThe automatic re-route calculates a return to the original route. Because of this, it may not be possible to
search appropriate new routes. If you deviate from the original route and wish to select an appropriate new
route, touch ªRoute Calculationº.
IThe automatic re-route function may sometimes require considerable time.
IDisplayed route number and directional information at a highway junction may differ from the information
posted on the actual road signs.
IDisplayed street name information at a highway exit may differ from the information posted on the actual
road signs.
IStreet name information displayed on the enlarged intersection map may differ from the information posted
on the actual road signs.
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NAVIGATION SYSTEM
This Condition is Not Abnormal (Cont'd)
EL-429

Page 1615 of 2395

INFINITI QX4 2001 Factory Service Manual IThe enlarged intersection map may display an ªUnknown Streetº message at some street intersections.
IBecause of road configuration, etc. the guide may finish early. If this occurs, follow the marke

IThe enlarged intersection map may display an ªUnknown Streetº message at some street intersections.
IBecause of road configuration, etc. the guide may finish early. If this occurs, follow the marker to reach
your destination.
IDestination area side information (left side and right side) may differ from actual conditions because of
data error.
Unable to Set Destination, Way Point, and/or Menu ItemsNBEL0235S0301
Symptom Possible cause Repair order
Unable to search way points in
re-search modeA way point already crossed or determined to
have been crossed.If you desire to pass through a way point for a
second time, reperform route edit.
Turn list is not displayed.Route search does not occur.Set designation areas and perform route
search.
Car marker does not appear on recom-
mended route.Drive on the recommended route.
Route guide is canceled.Turn the route guide ON. (Push ªVOICEº
switch.)
Automatic search does not func-
tion.Vehicle is not running on search object route
(road indicated by orange, brown or red line).Drive the vehicle on the search object route
or perform a manual route search. Note that
all routes will be re-searched at this time.
Unable to select detour route. Vehicle is not running on recommended route.Use the ªRE-ROUTEº mode to search again
or return to the recommended route.
Detour route search results are
identical to previous search.All possible conditions were considered, but
results are the same.This is not abnormal.
Unable to set a way point.More than five way points have been previ-
ously set (and not cleared).More than five way points cannot be specified
at the same time. Break down into smaller
segments and perform search.
Unable to select starting point
during route edit.Starting point will normally be your present
location during route edit.This is not abnormal.
Cannot select certain menu items. While vehicle is running.Park the vehicle in a safe area and perform
operation.
Voice Guide InformationNBEL0235S0302
Symptom Possible cause Repair order
Voice guide does not function. Voice guide is only available at certain inter-
sections (marked with
). In some cases, the
guide is not available even when the vehicle
makes a turn.This is not abnormal.
Vehicle is not running on recommended route.Return to recommended route or reperform
route search.
Voice guide is OFF. Set voice guide to the ON position.
Route guide is canceled.Turn the route guide ON. (Push ªVOICEº
switch.)
The guide content does not corre-
spond to actual conditions.The content of the voice guide may vary
depending on the type of junction.Operate vehicle following the traffic rules and
regulation.
Route Search InformationNBEL0235S0303
Symptom Possible cause Repair order
Proceeding in desired direction.
However, route search in desired
direction does not function.Unable to find appropriate route in the desired
direction.This is not abnormal.
NAVIGATION SYSTEM
This Condition is Not Abnormal (Cont'd)
EL-430

Page 1616 of 2395

INFINITI QX4 2001 Factory Service Manual Symptom Possible cause Repair order
No route is displayed.No object route is searched near destination
area.Adjust position to wide road (brown) near des-
tination area. In an area where traffic direc

Symptom Possible cause Repair order
No route is displayed.No object route is searched near destination
area.Adjust position to wide road (brown) near des-
tination area. In an area where traffic direction
is displayed separately, pay close attention to
the direction of travel. Set the destination area
and the way point over the road.
Starting point and destination areas are very
near.Move destination areas away from starting
point on the screen.
Recommended route which has
been passed disappears from the
display.The recommended route is divided into indi-
vidual control segments. When way point 1 is
passed, the data from the starting point to the
way point 1 is erased.This is not abnormal.
Search recommends roundabout
route.There may be special conditions for roads
near the starting point and destination area
(one-way traffic, etc.). A roundabout route may
be displayed.Slightly change starting point and destination
area settings.
Landmark display does not show
actual conditions.Mistaken or missing map data may result in
erroneous display.Change map CD.
Recommended route drawn
slightly away from starting point,
way points, and destination area.Course search data may not exist for closely
positioned starting point, way points, and des-
tination area shown on the map. Route guide
starting point, way point, and destination point
may be separated.Set the destination area to the general route
(indicated by a thick brown line). However,
even if the selected route is a major one,
appropriate route search data may not be
available.
LOCATION OF CAR MARKERNBEL0235S04IIf the vehicle has been parked in a multi-level parking facility or underground parking facility, the car marker
position may be inaccurate immediately after exiting the parking facility.
IThe GPS accuracy is within±100 m (300 ft). Even when receiving conditions are excellent, further posi-
tional correction may not occur.
STREET INDICATIONNBEL0235S05IStreet names displayed on the map may differ from the actual street names.
IAn ªUnknown Streetº message may appear on the map in place of street name information.
RESEARCHNBEL0235S06IPosition may be searched by house number. However, the displayed position and street may differ from
the actual position and street.
IWhen position is searched using POI, the displayed position may differ from the actual position.
ISome data may not be available for new buildings and other structures in a map.
GPS ANTENNANBEL0235S07IDo not place metal objects above the GPS antenna mounted on the rear parcel shelf. This will cause
interference with signal reception.
IDo not place mobile telephones or vehicle radio transceivers in close proximity to the GPS antenna
mounted on the rear parcel shelf. This may cause interference with signal reception.
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NAVIGATION SYSTEM
This Condition is Not Abnormal (Cont'd)
EL-431

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