service INFINITI FX35 2008 Service Manual

AV-82
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
4. Check voltage between display control unit harness connectorM75 terminals 4 and 7.
OK or NG
OK >> Replace display.
NG >> Replace display control unit.
5.CHECK DISPLAY CONTROL UNIT PO WER SUPPLY AND GROUND CIRCUIT
1. Check voltage between display control unit harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Disconnect display control unit connector.
4. Check continuity between display control unit harness connector M75 terminal 3 and ground.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness or connector.
Tint Is Strange for the RGB ImageINFOID:0000000001328730
Symptom: Tint of al l RGB images is strange.
1.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check the malfunctioning circuit according to the symptoms.
 Light blue (Cyan) tinged screen
Check continuity between display control unit harness connector
(A) M76 terminal 50 and display harness connector (B) M63 termi-
nal 17.
Check continuity between display control unit harness connector
(A) M76 terminal 50 and ground. 4 – 7 : Approx. 9 V
SKIB7842E
Te r m i n a l s
OFF ACC ON
(+)
(–)
Connector Terminal
M75 1
Ground Battery
voltage Battery
voltage Battery
voltage
10 0 V Battery
voltage Battery
voltage
3 – Ground : Continuity should exist.
SKIB7843E
SKIB7844E
50 – 17 : Continuity should exist.
50 – Ground : Continuity should not exist.
SKIB7853E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-83
< SERVICE INFORMATION >
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 Purple (Magenta) tinged screen
Check continuity between display control unit harness connector
(A) M76 terminal 52 and display harness connector (B) M63 termi-
nal 6.
Check continuity between display control unit harness connector
(A) M76 terminal 52 and ground.
 Yellow tinged screen
Check continuity between display control unit harness connector
(A) M76 terminal 54 and display harness connector (B) M63 termi-
nal 18.
Check continuity between display control unit harness connector
(A) M76 terminal 54 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
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-75, "
Confirmation/Adjustment Mode".
4. Display color bar by selecting “Display Color Spectrum Bar” on Display Diagnosis screen. Refer to AV-75,
"Confirmation/Adjustment Mode".
5. Check the malfunctioning circuit according to the symptoms.
 Light blue (Cyan) tinged screen
Check voltage waveform between display control unit harness con-
nector M76 terminal 50 and ground with CONSULT-III or oscillo-
scope.
 Purple (Magenta) tinged screen 52 – 6 : Continuity should exist.
52 – Ground : Continuity should not exist.
SKIB7854E
54 – 18 : Continuity should exist.
54 – Ground : Continuity should not exist.
SKIB7855E
50 – Ground:
SKIB7856ESKIB7769E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-84
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
Check voltage waveform between display control unit harness con-
nector M76 terminal 52 and ground with CONSULT-III or oscillo-
scope.
 Yellow tinged screen
Check voltage waveform between display control unit harness con-
nector M76 terminal 54 and ground with CONSULT-III or oscillo-
scope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit.
RGB Image Is RollingINFOID:0000000001328731
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. 52 – Ground:
SKIB7857ESKIB7770E
54 – Ground:
SKIB7858ESKIB7771E
56 – 19 : Continuity should exist.
56 – Ground : Continuity should not exist.
SKIB7863E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-85
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3. When displaying RGB image, check voltage waveform between display control unit harness connector M76 terminal 56 and
ground with CONSULT-III or oscilloscope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit.
Value for All Item in the TRIP Screen Do Not ChangeINFOID:0000000001328732
Symptom: Values for items, “Elapsed Time”, “Drivi ng 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-75, "
Confirmation/Adjustment Mode".
OK or NG
OK >> Replace display control unit.
NG >> Check display control unit ignition signal circuit, and repair malfunctioning part.
Value for Item, "Driving Distance" a nd "Average Speed" Do Not ChangeINFOID:0000000001328733
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-75, "
Confirmation/Adjustment Mode".
OK or NG
OK >> Replace display control unit.
NG >> Check display control unit vehicle speed signal circuit, and repair malfunctioning part.
Value for All Item in the FUEL ECONOMY Screen Do Not ChangeINFOID:0000000001328734
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-85, "
Value for All Item in the TRIP Screen Do Not Change"
or AV-85, "Value for Item, "Driving Distance" and "Average Speed" Do Not Change".
2.CHECK CAN COMMUNICATION
Check CAN communication. Refer to AV-79, "
CAN Communication Check".
OK or NG
OK >> Replace display control unit.
NG >> After filling out CAN DIAG SUPPORT MONITOR check sheet, Go to LAN-43, "
CAN System Spec-
ification Chart".
56 – Ground:
SKIB7864ESKIB3603E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-86
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
Example of Symptom Poss ible No Malfunction
INFOID:0000000001328735
For system operation informati on, refer to Owner's Manual.
DISPLAY
Removal and Installation of DisplayINFOID:0000000001328736
Refer to AV-42, "Disassembly and Assembly of Audio Unit".
Removal and Installation of Display Control UnitINFOID:0000000001328737
REMOVAL
1. Remove instrument passenger lower panel. Refer to IP-10.
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 SwitchINFOID:0000000001328738
Refer to AV-42, "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 liq-
uid crystal displays.
This is not a malfunction.
Some menu items cannot be se-
lected. Some menu items become unavailable while
the vehicle is driven. Park the vehicle in a safe location, then operate
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

NAVIGATION SYSTEMAV-87
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NAVIGATION SYSTEM
System DescriptionINFOID:0000000001328739
 For Navigation System operation information, refer to Navigation System Owner's Manual.
 Each control unit that comprises the system is connect ed with a communication circuit. It transmits/receives
data signals including request signals and respons e signals, and controls the system.
 The display control unit transmits/receives data signals to/from each control unit with CAN communication. It
performs an arithmetical operation on fuel information values by using data obtained from the control units,
and then displays the calculated values on the screen.
 The display control unit receives door switch signal s from the BCM with CAN communication, and displays a
warning on the screen when driving over the set speed with a door half-shut.
 The display control unit receives vehicle speed signal s that are transmitted from the unified meter and A/C
amp., performs an arithmetical operation on drive info rmation values, and then displays the calculated val-
ues on the screen.
 The images displayed on the monitor screen c ontain NAVI control unit-generated RGB images.
 The display control unit controls image switching and image quality adjustments by communications with the
display.
NAVIGATION SYSTEM
Location Detection Principle
SKIB8652E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-88
< SERVICE INFORMATION >
NAVIGATION SYSTEM
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-loc ation mark. More accurate data
is judged and used by comparing vehicle position detecti on 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 sen-
sor input signal. Therefore, the calculation may become incorrect
as the tires wear down. To prevent this, an automatic distance cor-
rection function has been adopted.
 Travel direction Change in the travel direction of the vehicle is calculated by a gyro-
scope (angular velocity sensor) and a GPS antenna (GPS informa-
tion). They have both advantages and disadvantages.
More accurate traveling direction is selected because pr iorities are set for the signals from these two devices
according to the situation.
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 th is case, the current-location mark on the display must be
corrected manually.
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 vehicle
speed is low.
SEL685V
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

NAVIGATION SYSTEMAV-89
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 In map-matching, alternative routes are prepared and prioritized in addition to the road judged currently driven. Due to the distance
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 steer-
ing 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 pat-
tern are different due to repair.
When driving on a road not present in the map, the map-matching
function may find another road and position the current-location
mark on it. Then, when the correc t road is detected, the current-
location mark may change to it.
 Effective range for comparing the vehicle position and travel direc-
tion 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.
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) ac cording 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 ca lculates 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 deter iorate 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 so me 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.
Component DescriptionINFOID:0000000001328740
NAVI CONTROL UNIT
SEL686V
SKIA0613E
SEL526V
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-90
< SERVICE INFORMATION >
NAVIGATION SYSTEM
 The gyro (angular speed sensor) and the DVD-ROM drive arebuilt-in units that control the navigation functions.
 Signals are received from the gyro, the vehicle speed sensor, and
the GPS antenna. Vehicle location is determined by combining this
data with the data contained in the DVD-ROM map. Locational
information is shown on liquid crystal display panel.
DVD-ROM Drive
Maps, traffic control regulations, and other pertinent information can
be easily read from the DVD-ROM.
DVD-ROM
 The DVD-ROM has maps, traffic control r egulations, and other pertinent information.
 To improve DVD-ROM map matching and route determi nation functions, the DVD-ROM uses an exclusive
Nissan format. Therefore, the use of a DVD-RO M provided by other manufacturers cannot be used.
Gyro (Angular Speed Sensor)
 The oscillator gyro sensor is used to detect changes in vehicle steering angle.
 The gyro is built into the navigation (NAVI) control unit.
GPS ANTENNA
The GPS antenna receives and amplifies the radio waves from the GPS satellites, and then transmits the GPS
signal to NAVI control unit.
DISPLAY CONTROL UNIT
 Display control unit draws a status of the audio and air conditioner, a TRIP screen, a FUEL ECONOMY screen, etc., and transmits the
image signals to the display screen.
 It receives operation signals of audio and air conditioner from A/C and AV switch, and transmits the operation signal of audio to the
audio unit via the communication line and transmits the operation
signal of air conditioner to the meter and A/C amp. via CAN com-
munication.
DISPLAY
SKIB3892E
SKIB6982E
SKIB8638E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

NAVIGATION SYSTEMAV-91
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 Images on the display include RGB image such as map screen.
 Display control unit controls images on the display.
A/C AND AV SWITCH
 A/C and AV switch, an integrated combination of audio and air con- ditioner switches, are adopted.
 Operation signal of audio is transmitted to the audio unit through
display control unit with the communication line. Operation signal
of air conditioner is transmitted to meter and A/C amp. through dis-
play control unit with CAN communication.
CAN Communication UnitINFOID:0000000001328741
Refer to LAN-43, "CAN System Specification Chart".
Component Parts LocationINFOID:0000000001328742
SKIB8639E
SKIB8639E
SKIB8641E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C