2008 INFINITI FX35 navigation system

AUDIOAV-19
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Wiring Diagram - AUDIO - / without Navigation SystemINFOID:0000000001328677
TKWM4394E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AUDIOAV-35
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STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “1” and “6” simultaneously for 3 seconds.
DIAGNOSIS FUNCTION
The following are checked: All the indicators (LED) in the A/C and AV switch.
 Continuity of the switches by sounding the buzze r when the A/C and AV switch and audio steering wheel
switch is pressed.
 Continuity of harness between A/C and AV switch and audio steering switch.
NOTE:
Rear window defogger switch operation is not checked. (No beep sound even under normal status)
EXITING THE SELF-DIAGNOSIS MODE
 Turn ignition switch OFF.
Trouble DiagnosisINFOID:0000000001328684
 The majority of the audio malfunctions are the result of outside causes (bad CD, electromagnetic interfer-
ence, etc.). Check the symptoms below to diagnose the malfunction.
 The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and oper-
ation of each piece of electrical equipment, and then determine the cause.
 Make sure that other operation except audio system can be performed with A/C and AV switch. If these
operations are inoperative with A/C and AV switch, refer to AV-79, "
Unable to Operate System with A/C and
AV Switch" (Without navigation system), or AV-127, "Unable to Operate System with A/C and AV Switch"
(With navigation system).
 Refer to "SERVICE BULLETIN ITB04-055" for the diagnosis of satellite radio.
SKIB8660E
Symptom Possible malfunction location
Audio system does not work properly.  Audio unit power supply circuit
 Communication signal circuit between audio unit and display control unit
 A/C and AV switch
 Audio unit
No sound can be heard from all speakers.  BOSE speaker amp. power supply and ground circuit
 BOSE speaker amp. ON signal circuit
 Audio unit
 BOSE speaker amp.
No sound can be heard from one or several speakers.  Audio signal circuit between audio unit and BOSE speaker amp.
 Audio signal circuit between BOSE speaker amp. and speaker
 Speaker
Tweeter
 Audio unit
 BOSE speaker amp.
No sound can be heard from woofer.  Audio signal circuit between BOSE speaker amp. and woofer
Woofer
 BOSE speaker amp.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-72
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
 *1: With telephone system
 *2: Without telephone system
Special Note for Trouble DiagnosisINFOID:0000000001328721
Prior to performing trouble diagnosis, make sure there are no corresponding description in the “Example of
Symptoms Possible No Malfunction”. Refer to AV-86, "
Example of Symptom Possible No Malfunction".
On Board Self-Diagnosis FunctionINFOID:0000000001328722
DESCRIPTION
 Trouble diagnosis function of navigation system has a Self Diagnosis mode by automatic operation and a
Confirmation/Adjustment mode by manual operation.
 Self Diagnosis mode checks for connections between the uni ts constituting this system, analyzes each indi-
vidual unit at the same time, and displays the results on the display.
 Confirmation/Adjustment mode displays trouble diagnos is that require an operation and a judgment by a
human (auto-decision cannot be performed by the system) , confirmation of preset value, and an error his-
tory.
DIAGNOSIS ITEM
8 (LG) Ground Communication
signal (–) Input/
Output ON —
12 (R/W) Ground Steering SW A Input ON Press and hold PTT
*1
switch Approx. 0 V
Press and hold MODE
*2
switch Approx. 0 V
Press and hold SEEK UP
switch Approx. 1.7 V
Press and hold VOL UP
switch Approx. 3.3 V
Except for above Approx. 5 V
13 (G/W) Ground Steering SW B Input ON Press and hold MODE
*1
switch Approx. 0 V
Press and hold POWER
*2
switch Approx. 0 V
Press and hold SEEK
DOWN switch Approx. 1.7 V
Press and hold VOL DOWN
switch Approx. 3.3 V
Except for above Approx. 5 V
14 (B/Y) Ground Steering SW ground — ON — Approx. 0 V Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
SKIB7379E
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
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