2006 INFINITI FX35 Ac system

INTEGRATED DISPLAY SYSTEM AV-89
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Revision: 2006 December 2006 FX35/FX45
2. CHECK RGB SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Start Confirmation/Adjustment mode. Refer to AV- 7 9 , "
Confirmation/Adjustment Mode" .
4. Display color bar by selecting “Display Color Spectrum Bar” on Display Diagnosis screen. Refer to AV- 8 0 ,
"DISPLAY DIAGNOSIS" .
5. Check the malfunctioning circuit according to the symptoms.

Light blue (Cyan) tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 50 and ground with CONSULT-II or
oscilloscope.

Purple (Magenta) tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 52 and ground with CONSULT-II or
oscilloscope.

Yellow tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 54 and ground with CONSULT-II or
oscilloscope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit. 50 – Ground:
SKIB7856ESKIB7769E
52 – Ground:
SKIB7857ESKIB7770E
54 – Ground:
SKIB7858ESKIB7771E

AV-90
INTEGRATED DISPLAY SYSTEM
Revision: 2006 December 2006 FX35/FX45
RGB Image Is RollingNKS003JP
Symptom: RGB image is rolling.
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check continuity between display control unit harness connector (A) M76 terminal 56 and display harness connector (B) M63 ter-
minal 19.
4. Check continuity between display control unit harness connector (A) M76 terminal 56 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RGB SYNCHRONIZING SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. When displaying RGB image, check voltage waveform between display control unit harness connector M76 terminal 56 and
ground with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit. 56 – 19 : Continuity should exist.
56 – Ground : Continuity should not exist.
SKIB7863E
56 – Ground:
SKIB7864ESKIB3603E

INTEGRATED DISPLAY SYSTEM AV-91
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Revision: 2006 December 2006 FX35/FX45
Values for All Items in The TRIP Screen Do Not ChangeNKS003JQ
Symptom: Values for items, “Elapsed Time”, “Driving Distance” and “Average Speed” in the TRIP screen do
not change. FUEL ECONOMY screen is not displayed when pressing “TRIP” button.
1. CHECK DISPLAY CONTROL UNIT IGNITION SIGNAL
Select “Vehicle Signals” in Confirmation/Adjustment mode, and check the ignition signal inputting to display
control unit. Refer to AV- 8 0 , "
VEHICLE SIGNALS" .
OK or NG
OK >> Replace display control unit.
NG >> Check display control unit ignition signal circuit, and repair malfunctioning part.
Values for Items, “Driving Distance” and “Average Speed” Do Not ChangeNKS003JR
Symptom: Values for Items, "Driving Distance" and "Average Speed" do not change. (The Value for "Elapsed
Time" Changes.)
1. CHECK DISPLAY CONTROL UNIT VEHICLE SPEED SIGNAL
Select “Vehicle Signals” in Confirmation/Adjustment mode, and check the vehicle speed signal inputting to dis-
play control unit. Refer to AV- 8 0 , "
VEHICLE SIGNALS" .
OK or NG
OK >> Replace display control unit.
NG >> Check display control unit vehicle speed signal circuit, and repair malfunctioning part.
Values for All Items in The FUEL ECONOMY Screen Do Not ChangeNKS003JS
Symptom: Values for items, “Average Fuel Economy” and “Distance to Empty” in the FUEL ECONOMY screen
do not change.
1. CHECK CONDITION
Check if values for all items in the TRIP screen change properly.
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning part. Refer to AV- 9 1 , "
Values for All Items in The TRIP Screen Do Not
Change" or AV- 9 1 , "Values for Items, “Driving Distance” and “Average Speed” Do Not Change" .
2. CHECK CAN COMMUNICATION
Check CAN communication. Refer to AV- 8 3 , "
CAN Communication Check" .
OK or NG
OK >> Replace display control unit.
NG >> After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO LAN-3, "
Precautions When
Using CONSULT-II" .

AV-92
INTEGRATED DISPLAY SYSTEM
Revision: 2006 December 2006 FX35/FX45
Example of Symptoms Possible No MalfunctionNKS003JT
For system operation information, refer to Owner's Manual.
DISPLAY
Removal and Installation of DisplayNKS003LI
Refer to AV- 4 3 , "Disassembly and Assembly for Audio Unit" .
Removal and Installation of Display Control UnitNKS003LZ
REMOVAL
1. Remove instrument passenger lower panel. Refer to IP-10,
"INSTRUMENT PANEL ASSEMBLY" .
2. Remove screws (A) with power tool and remove display control unit (1).
3. Remove screws (4) with power tool and remove brackets.
INSTALLATION
Installation is the reverse order of removal.
Removal and Installation of A/C and AV SwitchNKS003LJ
Refer to AV- 4 4 , "Removal and Installation for A/C and AV Switch" .
Symptom Possible cause Possible solution
No image is displayed. The brightness is at the lowest setting. Adjust the brightness of the display.
The display is turned off. Press and hold the button to turn on the
display.
The screen is too dim.
The movement is slow. The temperature in the interior of the vehicle is
low. Wait until the interior of the vehicle has
warmed up.
Some pixels in the display are
darker or brighter than others. This condition is an inherent characteristic of
liquid crystal displays. This is not a malfunction.
Some menu items cannot be
selected. Some menu items become unavailable while
the vehicle is driven. Park the vehicle in a safe location, then oper-
ate the navigation system.
The screen does not switch to the
night screen even after turning on
the headlights. The daytime screen was set the last time the
headlights were turned on. Set the screen to the night screen mode using
button when turning on the headlights.
SKIB8667E
SKIA5826E

NAVIGATION SYSTEM AV-93
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Revision: 2006 December 2006 FX35/FX45
NAVIGATION SYSTEMPFP:25915
System DescriptionNKS003K0

For Navigation System operation information, refer to Navigation System Owner's Manual.

Each control unit that comprises the system is connected with a communication circuit. It transmits/
receives data signals including request signals and response signals, and controls the system.

The display control unit transmits/receives data signals to/from each control unit with CAN communica-
tion. It performs an arithmetical operation on fuel information values by using data obtained from the con-
trol units, and then displays the calculated values on the screen.

The display control unit receives door switch signals from the BCM with CAN communication, and dis-
plays a warning on the screen when driving over the set speed with a door half-shut.

The display control unit receives vehicle speed signals that are transmitted from the unified meter and A/
C amp., performs an arithmetical operation on drive information values, and then displays the calculated
values on the screen.

The images displayed on the monitor screen contain NAVI control unit-generated RGB images.

The display control unit controls image switching and image quality adjustments by communications with
the display.
SKIB8652E

AV-94
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
NAVIGATION SYSTEM
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 selected 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 AV-95
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Revision: 2006 December 2006 FX35/FX45
Map-Matching
Map-matching compares a current location detected by the method
in the “Location Detection Principle” with a road map data from DVD-
ROM stored in DVD-ROM drive.
NOTE:
The road map data is based on data stored in the DVD-ROM.
The vehicle position may not be corrected under the following circumstances and after driving for a certain
time when GPS information is difficult to receive. In this case, the current-location mark on the display must be
corrected manually.

In map-matching, alternative routes are prepared and prioritized
in addition to the road judged currently driven. Due to the dis-
tance and/or direction error, the incorrect road may be prioritized
and current-location mark may be repositioned to the wrong
road.
When two roads are running in parallel, they are judged to the
same priority. Therefore, the current-location mark may appear
on either of them alternately, depending on maneuvering of the
steering wheel and configuration of the road.

Map-matching does not function correctly when a road on which
the vehicle is driving is new and not recorded in the DVD-ROM,
or when road pattern stored in the map data and the actual road
pattern are different due to repair.
When driving on a road not present in the map, the map-match-
ing function may find another road and position the current-loca-
tion mark on it. Then, when the correct road is detected, the
current-location mark may change to it.

Effective range for comparing the vehicle position and travel
direction calculated by the distance and direction with the road
data read from the DVD-ROM is limited. Therefore, when there
is an excessive gap between current vehicle position and the
position on the map, correction by map-matching is not possible.
SEL685V
SEL686V
SKIA0613E

AV-96
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
GPS (Global Positioning System)
GPS (Global Positioning System) was developed for and is con-
trolled by the US Department of Defense. The system utilizes GPS
satellites (NAVSTAR), sending out radio waves while flying on an
orbit around the earth at an altitude of approximately 21,000 km
(13,100 miles).
The GPS receiver calculates the vehicle's position in three dimen-
sions (latitude/longitude/altitude) according to the time lag of the
radio waves received from four or more GPS satellites (three-dimen-
sional positioning). If radio waves were received only from three
GPS satellites, the GPS receiver calculates the vehicle's position in
two dimensions (latitude/longitude), and utilize the altitude data cal-
culated previously with radio waves from four or more GPS satellites
(two-dimensional positioning).
Position correction by GPS is not available while the vehicle is stopped.
Accuracy of GPS will deteriorate under the following conditions:

In two-dimensional positioning, GPS accuracy will deteriorate when altitude of the vehicle position
changes.

The accuracy can be even lower depending on the arrangement of the GPS satellites utilized for the posi-
tioning.

Position detection is not possible when vehicle is in an area where radio waves from the GPS satellite do
not reach, such as in a tunnel, parking lot in a building, and under an elevated highway. Radio waves from
the GPS satellites may not be received when some object is located over the GPS antenna.
NOTE:

Even a high-precision three dimensional positioning, the detection result has an error about 10 m (30ft).

Because the signals of GPS satellite is controlled by the Tracking and Control Center in the United States,
the accuracy may be degraded lower intentionally or the radio waves may stop.
SEL526V