Infiniti G37 Coupe. Manual — part 67
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-21
< FUNCTION DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
C
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2.
Diagnosis results are displayed after the self-diagnosis is com-
pleted. The unit names and the connection lines are color-coded
according to the diagnostic results.
NOTE:
• Only the control unit (AV control unit) is displayed in red.
• Replace AV control unit if “Self-Diagnosis did not run because of a control unit malfunction” is indicated. The symptom is AV con-
trol unit internal error.
-
If multiple errors occur at the same time for a single unit, the screen switch colors are determined accord-
ing to the following order of priority: red > gray.
-
The comments of the self-diagnosis results can be viewed with a
component in the diagnosis result screen.
Detection range of self-diagnosis mode
• The self-diagnosis mode allows the technician to diagnose the connection in the communication line
between AV control unit and each unit and the internal operation of the AV control unit.
• Because the start condition of diagnosis function is a switch operation, the on board diagnosis function can-
not be started up if any malfunction is detected in the communication circuit between AV control unit and
multifunction switch.
NOTE:
Onboard self-diagnosis cannot be started when an error occurs on the dotted-line part above.
SELF-DIAGNOSIS RESULTS
Check the applicable display at the following table, and then repair the malfunctioning parts.
Self-diagnosis result chart
Diagnosis results
Unit
Con-
nection
line
Normal
Green
Green
Connection malfunction
Gray
Yellow
Unit malfunction
Note
Red
Green
JSNIA0209GB
JSNIA0141GB
JPNIA0514GB
AV-22
< FUNCTION DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
CONFIRMATION/ADJUSTMENT MODE
1.
Start the diagnosis function and select “Confirmation/Adjustment”. The confirmation/adjustment mode
indicates where each item can be checked or adjusted.
2.
Select each switch on the “Inspection & Adjustment Mode”
screen to display the relevant trouble diagnosis screen. Press
the “RETURN” switch to return to the initial Inspection & Adjust-
ment Mode screen.
Area with yellow connection lines
Description
Possible malfunction location / Action
to take
AV control unit malfunction is detected.
Replace the AV control unit.
“Self-Diagnosis did not run because of a control unit
malfunction”
• Malfunction is detected in communi-
cation circuit between AV control unit
and display unit.
• Malfunction is detected in communi-
cation signal between AV control unit
and display unit.
Communication circuit between AV
control unit and display unit.
• Satellite radio tuner power supply
and ground circuit malfunction is de-
tected.
• Malfunction is detected in communi-
cation circuits between AV control
unit and satellite radio tuner.
• Malfunction is detected in communi-
cation signal between AV control unit
and satellite radio tuner.
• Malfunction is detected in request
signal circuit between AV control unit
and satellite radio tuner.
• Satellite radio tuner power supply
and ground
• Communication circuit between AV
control unit and satellite radio tuner.
• Request signal circuit between AV
control unit and satellite radio tuner.
JSNIA0211GB
JPNIA0464GB
JSNIA0212GB
JSNIA0147GB
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-23
< FUNCTION DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
C
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Display Diagnosis
The tint of the color bar indication is as per the following list if RGB signal error is detected.
Vehicle Signals
A comparison check can be made of each actual vehicle signal and
the signals recognized by the system.
Speaker Test
JSNIA0688GB
R (red) signal error
: Light blue (Cyan) tint
G (green) signal error
: Purple (Magenta) tint
B (blue) signal error
: Yellow tint
JSNIA0149GB
Diagnosis item
Display
Vehicle status
Remarks
Vehicle speed
ON
Vehicle speed > 0 km/h (0 MPH)
Changes in indication may be delayed. This is normal.
OFF
Vehicle speed = 0 km/h (0 MPH)
Parking brake
ON
Parking brake is applied.
OFF
Parking brake is released.
Lights
ON
Light switch ON
—
OFF
Light switch OFF
Ignition
ON
Ignition switch ON
—
OFF
Ignition switch in ACC position
Reverse
ON
Shift the selector lever to “R” posi-
tion
Changes in indication may be delayed. This is normal.
OFF
Shift the selector lever other than
“R” position
AV-24
< FUNCTION DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Select “SPEAKER DIAGNOSIS” to display the Speaker Diagnosis
screen. Press “START and NEXT” to generate a test tone in a
speaker. Press “Start” to generate a test tone in the next speaker.
Press “End” to stop the test tones.
NOTE:
The frequency of test tone emitted from each speaker is as follows.
Climate Control
Refer to “HEATER & AIR CONDITIONING CONTROL SYSTEM” for details.
Error History
The self-diagnosis results are judged depending on whether any error occurs from when “Self-diagnosis” is
selected until the self-diagnosis results are displayed.
However, the diagnosis results are judged normal if an error has occurred before the ignition SW is turned ON
and then no error has occurred until the self-diagnosis start. Check the “Error Record” to detect any error that
may have occurred before the self-diagnosis start because of this situation.
Count up method A
• The counter resets to 0 if an error occurs when IGN switch is turned ON. The counter increases by 1 if the
condition is normal at a next IGN ON cycle.
• The counter upper limit is 39. Any counts exceeding 39 are ignored. The counter can be reset (no error
record display) with the “Delete log” switch or CONSULT-III.
Count up method B
• The counter increases by 1 if an error occurs when IGN switch is ON. The counter will not decrease even if
the condition is normal at the next IGN ON cycle.
• The counter upper limit is 50. Any counts exceeding 50 are ignored. The counter can be reset (no error
record display) with the “Delete log” switch or CONSULT-III.
Error item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items
Tweeter
: 3 kHz
Front speaker
: 300 Hz
Rear speaker
: 1 kHz
JSNIA0150GB
Display type of occur-
rence frequency
Error history display item
Count up method A
CAN communication line, control unit (CAN), AV communication line, control unit (AV communication)
Count up method B
Other than the above
JSNIA0151GB
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