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Infiniti QX4. Electrical System (2003 year). Manual - part 33

DIAGNOSTIC PROCEDURE 7

=NBEL0486S11

Self-diagnostic results:
“LOCK MODE” displayed on CONSULT-II screen

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “LOCK MODE” is displayed on CONSULT-II screen.

SEL371X

Is CONSULT-II screen displayed as above?

Yes

䊳

GO TO 2.

䊳

GO TO SYMPTOM MATRIX CHART 1.

ESCAPE FROM LOCK MODE

1. Turn ignition switch OFF.
2. Turn ignition switch ON with registered key. (Do not start engine.) Wait 5 seconds.
3. Return the key to OFF position.
4. Repeat steps 2 and 3 twice (total of three cycles).
5. Start the engine.

Does engine start?

Yes

䊳

System is OK.
(Now system is escaped from “LOCK MODE”.)

䊳

GO TO 3.

CHECK IMMU ILLUSTRATION

Check IMMU installation. Refer to “How to Replace IMMU” in EL-518.

OK or NG

䊳

GO TO 4.

䊳

Reinstall IMMU correctly.

IDX

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)

Trouble Diagnoses (Cont’d)

EL-517

PERFORM INITIALIZATION WITH CONSULT-II

Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual IVIS/NVIS”.

SEL297W

NOTE:
If the initialization is not completed or fails, CONSULT-II shows the above message on the screen.

Can the system be initialized?

Yes

䊳

System is OK.

䊳

GO TO DIAGNOSTIC PROCEDURE 4 to check “CHAIN OF IMMU-KEY”, refer to
EL-513.

SEL096WB

How to Replace IVIS (NATS) IMMU

NBEL0487

NOTE:

쐌

If IVIS (NATS) IMMU is not installed correctly, IVIS (NATS)
system

will

not

operate

properly

and

SELF-DIAG

RESULTS on CONSULT-II screen will show “LOCK
MODE”.

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM — NATS)

Trouble Diagnoses (Cont’d)

EL-518

Component Parts Location

NBEL0420

SEL508X

IDX

NAVIGATION SYSTEM

Component Parts Location

EL-519

SEL683V

System Description

=NBEL0421

OUTLINE

NBEL0421S01

The Navigation System (Multi-AV System) relies upon three sens-
ing devices in order to determine vehicle location at regular time
intervals.
1.

Vehicle speed sensor: Determines the distance the vehicle has
traveled.

Gyro (Angular velocity sensor): Determines vehicle steering
angle and directional change.

GPS antenna (GPS data): Determines vehicle forward move-
ment and direction.

The data provided by the three sensing functions together with a
comparison of the mapping information read from the CD-ROM
drive permit accurate determination of the vehicle’s current location
and subsequent course (map matching). The information appears
on a liquid crystal display.
This comparison of GPS data (vehicle position sensing) and map
matching permits precise determination of vehicle location.

SEL684V

Position Sensor Operating Principles

NBEL0421S0101

The sensor determines current vehicle location by calculating the
previously sensed position, the distance traveled from this position,
and the directional changes occurring during this travel.
1.

Distance traveled
The distance traveled is calculated using signals received from
the vehicle speed sensor. The sensor automatically compen-
sates for the slightly reduced wheel and tire diameter resulting
from tire wear.

Forward movement (Direction)
Changes in the direction of forward movement are calculated
by the gyro (angular velocity sensor) and the GPS antenna
(GPS data). Each of these functions has its advantage and
disadvantages. Depending upon conditions, one function takes
precedence over the other to accurately determine the direc-
tion of forward movement.

Function type

Advantage

Disadvantage

Gyro (Angular
velocity sen-
sor)

쐌

Able to accurately detect
minute changes in steering
angle and direction.

쐌

Calculation errors may
accumulate over a long
period of continuous
vehicle travel.

GPS antenna
(GPS data)

쐌

Able to sense vehicle travel
in four general directions
(North, South, East, and
West)

쐌

Unable to detect direction
of vehicle travel at low
vehicle speeds.

NAVIGATION SYSTEM

System Description

EL-520

SEL685V

Map Matching

NBEL0421S0102

Map matching allows the driver to compare the sensed vehicle
location data with the road map contained in the CD-ROM drive.
Vehicle position is marked on the CD-ROM map. This permits the
driver to accurately determine his/her present position on the high-
way and to make appropriate course decisions.
When GPS data reception is poor during travel, the vehicle posi-
tion is not amended. At this time, manual manipulation of the CD-
ROM map position marker is required.

SEL686V

Map matching permits the driver to make priority judgments about
possible appropriate roads other than the one currently being trav-
eled.
If there is an error in the distance or direction of travel, there will
also be an error in the relative position of other routes. When two
routes are closely parallel to one another, the indicated position for
both routes will be nearly the same priority. This is so that, slight
changes in the steering direction may cause the marker to indicate
both routes alternately.

SEL687V

Newly constructed roads may not appear on the CD-ROM map. In
this case, map matching is not possible. Changes in the course of
a road will also prevent accurate map matching.
When driving on a road not shown on the CD-ROM map, the posi-
tion marker used for map matching may indicate a different route.
Even after returning to a route shown on the map, the position
marker may jump to the position currently detected.

SEL526V

GPS (Global Positioning System)

NBEL0421S0103

GPS is the global positioning system developed and operated by
the US Department of Defense. GPS satellites (NAVSTAR) trans-
mit radio waves and orbit around the earth at an altitude of approxi-
mately 21,000 km (13,000 miles).
GPS receiver calculates the three-dimensional position of the
vehicle (latitude, longitude, and altitude from the sea level) by the
time difference of the radio wave arriving from more than four GPS
satellites (three-dimensional positioning).
When the radio wave is received from only three GPS satellites, the
two-dimensional position (latitude and longitude) is calculated,
using the altitude from the sea level data calculated by using four
GPS satellites (two-dimensional positioning).
Positioning capability is degraded in the following cases.

쐌

In two-dimensional positioning, when the vehicle’s altitude
from the sea level changes, the precision becomes lower.

쐌

The location detection performance can have an error of about
100 m (300 ft) even in three-dimensional positioning with high
precision. Because the precision is influenced by the location
of GPS satellites used for positioning, the location detection
performance may drop depending on the location of GPS sat-
ellites.

쐌

When the radio wave from GPS satellites cannot be received,

IDX

NAVIGATION SYSTEM

System Description (Cont’d)

EL-521

for example, when the vehicle is in a tunnel, in a parking lot
inside building, under an elevated superhighway or near strong
power lines, the location may not be detected. Turbulent/
electric weather conditions may also affect positioning perfor-
mance. If something is placed on the antenna, the radio wave
from GPS satellites may not be received.

SEL688V

COMPONENT DESCRIPTION

NBEL0421S02

Display & NAVI Control Unit

NBEL0421S0201

쐌

The gyro (angular speed sensor) and the CD-ROM drive are
built-in units that control the navigation functions.

쐌

Signals are received from the gyro, the vehicle speed sensor,
and the GPS antenna. Vehicle location is determined by com-
bining this data with the data contained in the CD-ROM map.
Locational information is shown on liquid crystal display panel.

쐌

Finger-operated touch switches are positioned on the liquid
crystal display panel for easy operation.

쐌

The touch switches used to control the equipment are beneath
a glass sheet and two resistance membranes at the top of the
liquid crystal display panel. The switches are sensitive to resis-
tance value where touched with your finger to detect operat-
ing status.

SEL689V

CD-ROM Driver

NBEL0421S0202

Maps, traffic control regulations, and other pertinent information
can be easily red from the CD-ROM disc.
NOTE:

쐌

When removing the CD-ROM, allow it to remain open until the
liquid crystal display locks.

쐌

The liquid crystal display must be closed when the vehicle is
running.

쐌

Do not place cups, cans or other containers containing liquids
on top of the liquid crystal display.

Map CD-ROM

NBEL0421S0203

쐌

The map CD-ROM has maps, traffic control regulations, and
other pertinent information.

쐌

To improve CD-ROM map matching and route determination
functions, the CD-ROM uses an exclusive Nissan format.
Therefore, the use of a CD-ROM provided by other manufac-
turers cannot be used.

NAVIGATION SYSTEM

System Description (Cont’d)

EL-522

SEL690V

Gyro (Angular Speed Sensor)

NBEL0421S0204

쐌

The oscillator gyro sensor is used to detect changes in vehicle
steering angle.

쐌

The oscillator gyro periodically senses oscillatory variation at
the oscillation terminals. This variation is caused by changes
in the vehicle angular velocity. Voltage variations are sensed
by ceramic voltage sensors at the left and right sides of the
terminals. Vehicle angular velocity corresponds directly with
these changes in voltage.

쐌

The gyro is built into the display & navigation (NAVI) control
unit.

MAP DISPLAY

BIRDVIEW

SEL636X

BIRDVIEW

姞

NBEL0421S0205

The BIRDVIEW

姞

provides a detailed and easily seen display of

road conditions covering the vehicle’s immediate to distant area.

SEL691V

Description

NBEL0421S0206

쐌

Display area: Trapezoidal representation showing approximate
distances (Wn, D, and Wd).

쐌

Ten horizontal grid lines indicate display width while six verti-
cal grid lines indicate display depth and direction.

쐌

Drawing line area shows open space, depth, and immediate
front area. Each area is to a scale of approximately 5:6:25.

쐌

When the “ZM−” button is pushed, the view point height is
increased. Pushing the “ZM+” button decreases the height.
Pushing the “ZM−” button or the “ZM+” button during operation
indicates the scale change and the view point height at the
left-hand side of the screen.

IDX

NAVIGATION SYSTEM

System Description (Cont’d)

EL-523

FUNCTION OF TOUCH SWITCH (SUMMARY)

=NBEL0421S03

Display with Pushed “MAP” Switch

NBEL0421S0301

SEL475Y

The function of each touch switch is as follows:
1)

Azimuth indication

Position marker
The tip of the arrow shows the current position. The shaft of
the arrow indicates the direction in which the vehicle is travel-
ing.

GPS reception signal (indicates current reception conditions)

Distance display (shows the distance in a reduced scale)

Current location voice information
(this information is available when the route guide is being
activated and the designated route is being traveled.)

Switch display from map screen to BIRDVIEW

姞

screen

(change to map screen on display when the BIRDVIEW

姞

being used.)

The following items can be set.

쐌

Save Current Location

쐌

Edit Address Book

쐌

Guide Volume

쐌

System Setting

The route guide operation can be canceled.

NAVIGATION SYSTEM

System Description (Cont’d)

EL-524

Display with Pushed “DEST” Switch

=NBEL0421S0302

SEL581X

The function of each touch switch is as follows:

Icon

Description

Address Book

Favorite place can be saved to memory.
The destination can be selected from the memory.

Address/Street

The destination can be searched from the address.

Point of Interest (POI)

The destination of favorite facility can be searched.

Previous Dest.

The previous ten destinations stored in memory are
displayed.

Intersection

The destination from the intersection name can be
retrieved.

City

The destination can be searched from city name.

Map

The destination can be searched from the map.

IDX

NAVIGATION SYSTEM

System Description (Cont’d)

EL-525

Display with Toutch Screen

NBEL0421S0303

SEL476Y

The function of each touch switch is as follows:

Icon

Description

Quick Stop

The selected facility is set as the destination or way-
point. (Route guidance has been turned OFF or the
destination has been reached.)

Where am I?

Next, current and previous street names can be dis-
played.

Route Info.*

The following items can be set.

쐌

Complete Route

쐌

Turn List

쐌

Route Simulation

(Displayed only when the destination area has been
set.)

Detour*

Based on the selected distance, an alternative route is
searched. [Displayed only when the recommended
route (not its reverse) is followed.]

Edit Route*

Change the destination or add the transit points of the
route set in the route guide. (Displayed only when the
automatic reroute function has been turned OFF and
the recommended route is not followed.)

Route Calc.

Search for a recommended route between the vehi-
cle’s current location and the destination area. (Dis-
played only when the destination area has been set.)

*: When destinations have been entered, route guidance has been turned OFF or
destination has been reached, “Route Info.”, “Detour” and “Edit Route” are not
displayed.

NAVIGATION SYSTEM

System Description (Cont’d)

EL-526

Schematic

NBEL0422

MEL367Q

IDX

NAVIGATION SYSTEM

Schematic

EL-527

Wiring Diagram — NAVI —

NBEL0423

MEL368Q

NAVIGATION SYSTEM

Wiring Diagram — NAVI —

EL-528

MEL272N

IDX

NAVIGATION SYSTEM

Wiring Diagram — NAVI — (Cont’d)

EL-529

MEL270M

NAVIGATION SYSTEM

Wiring Diagram — NAVI — (Cont’d)

EL-530

Self-diagnosis Mode

NBEL0424

APPLICATION ITEMS

NBEL0424S01

Mode

Description

Reference

page

Self Diagnosis

Self-diagnosis for display & NAVI control unit, CD-ROM
and GPS antenna connection.

EL-532

Confirmation/
adjustment

Display Diagnosis

Color and gray gradation of display can be checked in
this mode.

EL-540

Diagnostic Signals from the Car

Several input signals to display & NAVI control unit, can
be monitored in this mode.

EL-538

Navigation

Check the map CD-
ROM version

The version (parts number) of inserted CD-ROM can be
checked in this mode.

EL-539

History of errors

Diagnosis results previously stored in the memory
(before turning ignition switch ON) are displayed in this
mode. Time and location when/where the errors
occurred are also displayed.

EL-534

Longitude & Latitude

Display the map. Use the joystick to adjust position. Lon-
gitude and latitude will be displayed.

EL-541

Adjust the angle

Turning angle of the vehicle on the display can be
adjusted in this mode.

EL-542

Speed Calibration

Under ordinary conditions, the navigation system dis-
tance measuring function will automatically compensate
for minute decreases in wheel and tire diameter caused
by tire wear or low pressure. Speed calibration immedi-
ately restores system accuracy in cases such as when
distance calibration is needed because of the use of tire
chains in inclement weather.

EL-543

Initialize Location

This mode is for initializing the current location. Use
when the vehicle is transported a long distance on a
trailer, etc.

EL-568

SEL583X

HOW TO PERFORM SELF-DIAGNOSIS MODE

NBEL0424S02

Start the engine.

Push both of “MAP” and “D/N” switches at the same time for
more than 5 seconds.

SEL584X

Touch “Self Diagnosis” or “Confirmation/ adjustment”.

쐌

For further procedure, refer to the following pages which
describe each application item of the self-diagnosis mode.

IDX

NAVIGATION SYSTEM

Self-diagnosis Mode

EL-531

SEL584X

“Self Diagnosis”

NBEL0424S0201

Start the engine.

Push both “MAP” and “D/N” switches at the same time for more
than 5 seconds.

Touch “Self Diagnosis”.

SEL585X

Self-diagnosis will be performed.

SEL586X

Diagnosis results will be displayed. Diagnosis results are indi-
cated by display color. For details refer to “SELF-DIAGNOSIS
RESULTS”.

SEL587X

To obtain detailed diagnosis results on the screen, touch “Naviga-
tion” or “GPS Antenna”.

NAVIGATION SYSTEM

Self-diagnosis Mode (Cont’d)

EL-532

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