INFINITI FX35 2007 Service Manual

INTEGRATED DISPLAY SYSTEM AV-75
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Revision: 2006 July 2007 FX35/FX45
Special Note for Trouble DiagnosisNKS003JB
Prior to performing trouble diagnosis, make sure there are no corresponding description in the “Example of
Symptoms Possible No Malfunction”. Refer to AV- 9 2 , "
Example of Symptoms Possible No Malfunction" .
On Board Self-Diagnosis FunctionNKS003JC
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 units constituting this system, analyzes each
individual unit at the same time, and displays the results on the display.

Confirmation/Adjustment mode displays trouble diagnosis 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
Mode Description
Self Diagnosis (DCU)

Display control unit diagnosis

Analyzes connection between the display control unit and each unit, and
operation of each unit.
Confirmation/
Adjustment Display Diagnosis
Color tone and shading of the display control unit-generated image can be
checked by the display of a color bar and a gray scale.
Vehicle Signals Diagnosis of signals that are input to display control unit can be performed
for Vehicle Speed, IGN, Reverse and Light.
Auto Climate Control Refer to AT C - 5 2 , "
Self-diagnosis Function" .
CAN DIAG SUPPOPT MONITOR The transmitting/receiving of CAN communication can be monitored.

AV-76
INTEGRATED DISPLAY SYSTEM
Revision: 2006 July 2007 FX35/FX45
Self-Diagnosis Mode (DCU)NKS003JD
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Confirmation/Adjustment” and “CAN
DIAG SUPPORT MONITOR” will become selective.
5. Perform self-diagnosis by selecting the “Self Diagnosis (DCU)”.

Self-diagnosis screen is displayed, and then self-diagnosis
starts.

The bar graph visible below self-diagnosis screen displays
progress of the diagnosis.
6. When the self-diagnosis completes, optional part confirmation screen will be shown.

When connection of an optional part is judged error, a screen
to check if the optional part is actually fitted on the vehicle or
not will be shown. When fitted, select the switch of the part on
the screen and press “End”. Then the “SELF DIAGNOSIS”
screen will be shown.

When the optional part is connected normally, the switch for
the part will not appear on the screen.
SKIB8743E
SKIB7871E
SKIA4208E
SKIB8673E

INTEGRATED DISPLAY SYSTEM AV-77
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Revision: 2006 July 2007 FX35/FX45
7. On the diagnosis results screen, each unit name and connection
line will be colored according to the diagnosis result, as follows.
NOTE:

Satellite = Satellite radio tuner

DCU = Display control unit

Multifunction switch = A/C and AV switch

If multiple malfunctions occur at the same time for a single
unit, the screen switch colors are determined according to the following order of priority: red > yellow >
gray.
8. Select a switch on the diagnosis results screen, and comments for the diagnosis results will be shown.
SELF-DIAGNOSIS RESULT
Quick Reference Table
1. Select the applicable diagnosis number in the quick reference table of diagnosis result.
2. Confirm the possible malfunction with the diagnosis table, and then perform inspection.
3. Turn ignition switch OFF and perform self-diagnosis again.

When A/C and AV switch has a malfunction, the self-diagnosis cannot be started. Refer to AV- 8 4 , "Unable
to Operate System with A/C and AV Switch" .

When display has a malfunction, the self-diagnosis cannot be started. Refer to AV- 8 6 , "All Images Are Not
Displayed" .
Green : No malfunctioning.
Gray : Cannot be judged by self-diagnosis results.
Red : Unit is malfunctioning.
SKIB7872E
SKIA4211E
Switch color Screen switch
Diagnosis No.
DCU Display Audio Unit Satellite
Red × 1
Gray ×
2
×× 3
× 4

AV-78
INTEGRATED DISPLAY SYSTEM
Revision: 2006 July 2007 FX35/FX45
Self-Diagnosis Codes
Diagnosis
No. Possible cause Action to take
1 Display control unit malfunction is detected. Replace display control unit.
2 Malfunction is detected on communication signal between
display control unit and display. 1. Check communication circuit between display control
unit and display.
2. Check communication signal between display control unit and display.
3. If the results from the above checkup show no malfunc- tion, replace either display control unit or display, and
then start self-diagnosis.
4. If self-diagnosis results still show any malfunction, replace the other unit.
3

Audio unit power supply circuit malfunction is detected.

Malfunction is detected on communication signal
between display control unit and audio unit. 1. Check audio unit power supply circuit.
2. Check communication circuit between display control unit and audio unit.
3. Check communication signal between display control unit and audio unit.
4. If the results from the above checkup show no malfunc- tion, replace either display control unit or audio unit, and
then start self-diagnosis.
5. If self-diagnosis results still show any malfunction, replace the other unit.
4

Satellite radio tuner power supply and ground circuit
malfunction is detected.

Malfunction is detected on communication signal
between audio unit and satellite radio tuner. 1. Check satellite radio tuner power supply and ground cir-
cuit.
2. Check communication circuit between audio unit and satellite radio tuner.
3. Check communication signal between audio unit and satellite radio tuner.
4. If the results from the above checkup show no malfunc- tion, replace either audio unit or satellite radio tuner, and
then start self-diagnosis.
5. If self-diagnosis results still show any malfunction, replace the other unit.

INTEGRATED DISPLAY SYSTEM AV-79
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Revision: 2006 July 2007 FX35/FX45
Confirmation/Adjustment ModeNKS003JE
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Confirmation/Adjustment” and “CAN
DIAG SUPPORT MONITOR” will become selective.
5. Select “Confirmation/Adjustment”.
6. Each diagnosis is shown by selecting each screen switch on Confirmation/Adjustment screen.
SKIB8743E
SKIB7871E
SKIB7873E

AV-80
INTEGRATED DISPLAY SYSTEM
Revision: 2006 July 2007 FX35/FX45
DISPLAY DIAGNOSIS
Color tone and shading of the display control unit-generated image can be checked by the display of a color
bar and a gray scale.

If RGB signal is malfunctioning, the tint of the color bar display is as follows.
VEHICLE SIGNALS
A comparison check can be made of each actual vehicle signal and
the signals recognized by the display control unit.
NOTE:
In case of confirming light signal, set the following D/N mode to ON/
OFF of lighting switch (normal setting).

OFF: D (Day mode)

ON: N (Night mode)
Unless above setting, light signal (ON/OFF) may not be accurately
displayed. R (red) signal error : Light blue (Cyan) tint
G (green) signal error : Purple (Magenta) tint
B (blue) signal error : Yellow tint
SKIB7777E
SKIB7778E
Diagnosis item Display Condition Remarks
Vehicle Speed ON When vehicle speed is more than 0 km/h (0 MPH)
Changes in indication may be delayed.
This is normal.
OFF When vehicle speed is 0 km/h (0 MPH)
— Ignition switch in ACC position
IGN ON Ignition switch ON
—
OFF Ignition switch ACC position
Reverse ON Selector lever in R position
Changes in indication may be delayed.
This is normal.
OFF Selector lever in any position other than R position
— Ignition switch in ACC position
IVCS OFF — This vehicle does not use it.
Light ON Lighting switch ON
—
OFF Lighting switch OFF

INTEGRATED DISPLAY SYSTEM AV-81
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Revision: 2006 July 2007 FX35/FX45
AUTO CLIMATE CONTROL
Refer to AT C - 5 2 , "Self-diagnosis Function" .
CAN DIAG SUPPORT MONITORNKS003JF
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Confirmation/Adjustment” and “CAN
DIAG SUPPORT MONITOR” will become selective.
5. Select “CAN DIAG SUPPORT MONITOR”.
6. The transmitting/receiving of CAN communication can be moni- tored.
NOTE:
Counter shows the status of CAN communication.
SKIB8743E
SKIB7871E
Item Content Error counter
(Reference value)
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 OK/UNKWN 0 - 50
SKIA4288E

AV-82
INTEGRATED DISPLAY SYSTEM
Revision: 2006 July 2007 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionNKS003JG
Performing self-diagnosis makes it possible to check operation of A/C and AV switch indicator (LED) and other
switch.
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 buzzer 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 wheel 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.
SKIB8744E

INTEGRATED DISPLAY SYSTEM AV-83
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Revision: 2006 July 2007 FX35/FX45
CAN Communication CheckNKS003JJ
1. CHECK MONITOR DESCRIPTION
1. Start self-diagnosis of DCU. Refer to AV- 7 6 , "
Self-Diagnosis Mode (DCU)" .
2. Select “CAN DIAG SUPPORT MONITOR”. Refer to AV- 8 1 ,
"CAN DIAG SUPPORT MONITOR" .
3. Record each item display description (OK/NG/UNKWN) 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-49, "
CAN System
Specification Chart" .
Item content
Error counter
(Reference value)
Normal condition 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

AV-84
INTEGRATED DISPLAY SYSTEM
Revision: 2006 July 2007 FX35/FX45
Unable to Operate System with A/C and AV SwitchNKS003JK
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- 8 6 , "
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- 8 2 , "
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 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.
Terminals
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