2008 INFINITI FX35 air condition

INTEGRATED DISPLAY SYSTEMAV-79
< SERVICE INFORMATION >
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Rear window defogger switch operation is not checked (No beep sound even under normal status).
EXITING THE SELF-DIAGNOSIS MODE
 Turn ignition switch OFF.
CAN Communication CheckINFOID:0000000001328727
1.CHECK MONITOR DESCRIPTION
1. Start self-diagnosis of DCU. Refer to AV-73, "
Self-Diagnosis Mode (DCU)".
2. Select “CAN DIAG SUPPORT MONITOR”. Refer to AV-77,
"CAN Diagnostic Support Monitor".
3. Record each item display description (OK/NG/UNK WN) displayed on the following CAN DIAG SUPPORT
MONITOR Check Sheet.
CAN DIAG SUPPORT MONITOR Check Sheet
>> After filling in CAN DIAG SUPPORT MONITOR Check Sheet, Go to LAN-43, "CAN System Spec-
ification Chart".
Unable to Operate System with A/C and AV SwitchINFOID:0000000001328728
Symptom: Unable to operate A/C system and audio system with A/C and AV switch. (Unable to start self-diag-
nosis.)
1.CHECK CONDITION
1. Turn ignition switch ON.
2. Check if an image is displayed on the screen.
Is an image displayed on the screen?
YES >> GO TO 2.
NO >> Repair malfunctioning part. Refer to AV-80, "
All Images Are Not Displayed".
2.SELF-DIAGNOSIS OF A/C AND AV SWITCH
Start self-diagnosis of A/C and AV switch, and check the self-diagnosis result. Refer to AV-78, "
A/C and AV
Switch Self-Diagnosis Function".
OK or NG
Item content
Error counter
(Reference value)
Normal conditio n Error (Example)
CAN_COMM OK NG 0 - 50
CAN_CIRC_1 OK UNKWN 0 - 50
CAN_CIRC_2 OK UNKWN 0 - 50
CAN_CIRC_3 OK UNKWN 0 - 50
CAN_CIRC_4 OK UNKWN 0 - 50
CAN_CIRC_5 OK UNKWN 0 - 50
CAN_CIRC_6 OK UNKWN 0 - 50
CAN_CIRC_7 OK UNKWN 0 - 50
CAN_CIRC_8 OK UNKWN 0 - 50
CAN_CIRC_9 UNKWN UNKWN 0 - 50
PKIB6080E
Diagnosis item Screen display Diagnosis item Screen display CAN_COMM OK NG CAN_CIRC_5 OK UNKWN
CAN_CIRC_1 OK UNKWN CAN_CIRC_6 OK UNKWN
CAN_CIRC_2 OK UNKWN CAN_CIRC_7 OK UNKWN
CAN_CIRC_3 OK UNKWN CAN_CIRC_8 OK UNKWN
CAN_CIRC_4 OK UNKWN CAN_CIRC_9 OK UNKWN
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-80
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK A/C AND AV SWITCH POWER SUPPLY AND GROUND CIRCUIT
1. Check voltage between A/C and AV switch harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Disconnect A/C and AV switch connector.
4. Check continuity between A/C and AV switch harness connector M64 terminal 5 and ground.
OK or NG
OK >> Replace A/C and AV switch.
NG >> Repair harness or connector.
4.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and A/C and AV switch connectors.
3. Check continuity between display control unit harness connector (A) M76 terminals 28, 30 and A/C and AV switch harness con-
nector (B) M64 terminals 6, 8.
4. Check continuity between display control unit harness connector (A) M76 terminals 28, 30 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5.CHECK A/C AND AV SWITCH AND DISPLAY CONTROL UNIT
1. Replace A/C and AV switch or display control unit.
2. Make sure that A/C system and audio syst em can be operated by A/C and AV switch.
OK or NG
OK >> INSPECTION END
NG >> Replace the other unit.
All Images Are Not DisplayedINFOID:0000000001328729
Symptom: RGB image is not displayed.
1.CHECK CONDITION
Te r m i n a l s
OFF ACC ON
(+)
(–)
Connector Terminal
M64 1
Ground Battery
voltage Battery
voltage Battery
voltage
20 V Battery
voltage Battery
voltage
5 – Ground : Continuity should exist.
SKIB7836E
SKIB7837E
28 – 6 : Continuity should exist.
30 – 8 : Continuity should exist.
28, 30 – Ground : Continuity should not exist.
SKIB7838E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-81
< SERVICE INFORMATION >
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When operating audio and air conditioner, make sure that they operate correctly.
Do audio and air conditioner operate normally?
YES >> GO TO 2.
NO >> GO TO 5.
2.CHECK DISPLAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display connector.
3. Check continuity between display harness connector M63 termi- nal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK HARNESS
1. Disconnect display control unit connector.
2. Check continuity between display control unit harness connector (A) M75 terminals 2, 4, 5, 7 and display harness connector (B)
M63 terminals 2, 3, 13, 14.
3. Check continuity between display control unit harness connector (A) M75 terminals 2, 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK DISPLAY POWER SUPPLY AND GROUND CIRCUIT (INVERTER AND SIGNAL)
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector M75 terminals 2 and 5.1 – Ground : Continuity should exist.
SKIB7839E
2 – 2 : Continuity should exist.
4 – 3 : Continuity should exist.
5 – 13 : Continuity should exist.
7 – 14 : Continuity should exist.
2, 4 – Ground : Continuity should not exist.
SKIB7840E
2 – 5 : Approx. 9 V
SKIB7841E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-85
< SERVICE INFORMATION >
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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

NAVIGATION SYSTEMAV-89
< SERVICE INFORMATION >
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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
< SERVICE INFORMATION >
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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

NAVIGATION SYSTEMAV-127
< SERVICE INFORMATION >
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3. Record each item display description (OK/NG/UNK WN) displayed on the following CAN DIAG SUPPORT
MONITOR Check Sheet.
CAN DIAG SUPPORT MONITOR Check Sheet
>> After filling in CAN DIAG SUPPORT MONITOR Check Sheet, Go to LAN-43, "CAN System Spec-
ification Chart".
Unable to Operate System with A/C and AV SwitchINFOID:0000000001328759
Symptom: Unable to operate A/C system, audio sys tem and navigation system with A/C and AV switch.
(Unable to start self-diagnosis.)
1.CHECK CONDITION
1. Turn ignition switch ON.
2. Check if an image is displayed on the screen.
Is an image displayed on the screen?
YES >> GO TO 2.
NO >> Repair malfunctioning part. Refer to AV-128, "
All Images Are Not Displayed".
2.SELF-DIAGNOSIS OF A/C AND AV SWITCH
Start self-diagnosis of A/C and AV switch, and check the self-diagnosis result. Refer to AV-126, "
A/C and AV
Switch Self-Diagnosis Function".
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK A/C AND AV SWITCH POWE R SUPPLY AND GROUND CIRCUIT
1. Check voltage between A/C and AV switch harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Disconnect A/C and AV switch connector.
Diagnosis item Screen display Diagnosis item Screen display CAN_COMM OK NG CAN_CIRC_5 OK UNKWN
CAN_CIRC_1 OK UNKWN CAN_CIRC_6 OK UNKWN
CAN_CIRC_2 OK UNKWN CAN_CIRC_7 OK UNKWN
CAN_CIRC_3 OK UNKWN CAN_CIRC_8 OK UNKWN
CAN_CIRC_4 OK UNKWN CAN_CIRC_9 OK UNKWN
Te r m i n a l s OFF ACC ON
(+)
(–)
Connector Terminal
M64 1
Ground Battery
voltage Battery
voltage Battery
voltage
20 V Battery
voltage Battery
voltage
SKIB7836E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C