2008 INFINITI FX35 audio

INTEGRATED DISPLAY SYSTEMAV-53
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 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
 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:0000000001328712
Refer to LAN-43, "CAN System Specification Chart".
Component Parts LocationINFOID:0000000001328713
SKIB8638E
SKIB8639E
SKIB8639E
SKIB8645E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-68
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
36 (PU) GroundCommunication signal
(DCU-DSP) Output ON —
37 — Shield — — — —
38 (LG) Ground Communication signal
(DSP-DCU)
Input ON —
39 — Shield — — — —
40 (LG) Ground Communication signal
(DCU-AUD) Output ONOperate audio volume
switch
42 (PU) Ground Communication signal
(AUD-DCU)
Input ONOperate audio volume
switch
47 — Shield — — — —
49 — Shield — — — —
50 (G) Ground RGB signal (R: red) Output ON Start Confirmation/Adjust-
ment mode, and then dis-
play color bar by selecting
“Display Color Spectrum
Bar” on Display Diagnosis
screen
51 (B) Ground RGB area (YS) signal Output ON Set the selector lever in R
position, and then display
the rear view image
Te r m i n a l
(Wire color) ItemSignal
input/
output Condition
Reference value
+– Ignition
switch Operation
SKIB3607E
SKIB3606E
SKIB3607E
SKIB3606E
SKIB7769E
SKIB3599E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-73
< SERVICE INFORMATION >
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Self-Diagnosis Mode (DCU)INFOID:0000000001328723
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 performedby 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-diagnosisstarts.
 The bar graph visible below self-diagnosis screen displays progress of the diagnosis.
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 - 4 3 , "
Self-Diagnosis Function".
CAN DIAG SUPPOPT MONITOR The transmitting/receiving of CAN communication can be monitored.
SKIB8743E
SKIB7871E
SKIA4208E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-74
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
6. When the self-diagnosis completes, optional part confirmationscreen will be shown.
 When connection of an optional part is judged error, a screento check if the optional part is actually fitted on the vehicle or
not will be shown. When fitted, sele ct the switch of the part on
the screen and press “End”. T hen 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.
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 singleunit, 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-79, "
Unable to
Operate System with A/C and AV Switch".
 When display has a malfunction, the self-diagnosis cannot be started. Refer to AV-80, "
All Images Are Not
Displayed".
Self-Diagnosis Codes
SKIB8673E
Green : No malfunctioning.
Gray : Cannot be judged by self-diagnosis results.
Red : Unit is malfunctioning.
SKIB7872E
SKIA4211E
Switch colorScreen switch
Diagnosis No.
DCU Display Audio Unit Satellite
Red × 1
Gray ×
2
×× 3
× 4
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-75
< SERVICE INFORMATION >
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Confirmation/Adjustment ModeINFOID:0000000001328724
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 performedby pressing “BACK” button.
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 mal-
function, replace either display control unit or display,
and then start self-diagnosis.
4. If self-diagnosis results still show any malfunction, re-
place the other unit.
3  Audio unit power supply circuit malfunction is detected.
 Malfunction is detected on communication signal be-
tween 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 mal-
function, replace either display control unit or audio
unit, and then start self-diagnosis.
5. If self-diagnosis results still show any malfunction, re-
place the other unit.
4  Satellite radio tuner power supply and ground circuit mal-
function is detected.
 Malfunction is detected on communication signal be- tween audio unit and satellite radio tuner. 1. Check satellite radio tuner power supply and ground
circuit.
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 mal- function, replace either audio unit or satellite radio tun-
er, and then start self-diagnosis.
5. If self-diagnosis results still show any malfunction, re- place the other unit.
SKIB8743E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

INTEGRATED DISPLAY SYSTEMAV-77
< SERVICE INFORMATION >
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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.
AUTO CLIMATE CONTROL
Refer to ATC-43, "Self-Diagnosis Function".
CAN Diagnostic Support MonitorINFOID:0000000001328725
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 performedby pressing “BACK” button.
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
SKIB8743E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

AV-78
< SERVICE INFORMATION >
INTEGRATED DISPLAY SYSTEM
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.
A/C and AV Switch Self-Diagnosis FunctionINFOID:0000000001328726
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 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 wheel switch.
NOTE:
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
SKIB8744E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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