Nissan GT-R. Instruction — part 7
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-23
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH NAVIGATION]
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4.
The trouble diagnosis initial screen is displayed, and then the
items of “Self Diagnosis” and “Confirmation/Adjustment” can be
selected.
SELF-DIAGNOSIS MODE
1.
Start the self-diagnosis function and select “Self Diagnosis”.
-
Self-diagnosis subdivision screen is displayed, and the self-diagnosis mode starts.
-
The bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trou-
ble diagnosis.
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. Refer to
AV-77, "Removal and Installation"
-
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.
SELF-DIAGNOSIS RESULTS
Check the applicable display at the following table, and then repair the malfunctioning parts.
Only Unit Part Is Displayed In Red.
JSNIA2173ZZ
Diagnosis results
Unit
Con-
nection
line
Normal
Green
Green
Connection malfunction
Gray
Yellow
Unit malfunction
Note
Red
Green
JSNIA2486ZZ
JPNIA1787ZZ
Screen switch
Description
Possible malfunction location / Action to
take
Control unit
Malfunction is detected in AV control unit
power supply and ground circuits.
Check AV control unit power supply and
ground circuits. When detecting no mal-
function in those components, replace AV
control unit.
AV-24
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH NAVIGATION]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
A Connecting Cable Between Units Is Displayed In Yellow.
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 “Confirmation/Adjustment Mode”
screen to display the relevant trouble diagnosis screen. Press
the “Back” switch to return to the initial Confirmation/Adjustment
Mode screen.
Area with yellow connection lines
Description
Possible malfunction location / Action to
take
Control unit
⇔
Front Display
Malfunction is detected in serial communi-
cation circuits between AV control unit and
display unit.
Serial communication circuits between AV
control unit and display unit.
Control unit
⇔
GPS Antenna
GPS antenna connection malfunctions de-
tected.
GPS antenna
Control unit
⇔
SAT Antenna
Satellite radio antenna connection malfunc-
tions detected.
Satellite radio antenna
NNNIA0186ZZ
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-25
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH NAVIGATION]
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Display Diagnosis
Vehicle Signals
A comparison check can be made of each actual vehicle signal and
the signals recognized by the system.
JSNIA2176GB
JSNIA2177ZZ
AV-26
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH NAVIGATION]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Navigation
STEERING ANGLE ADJUSTMENT
The steering angle output value detected with the gyroscope is
adjusted.
SPEED CALIBRATION
During normal driving, distance error caused by tire wear and tire
pressure change is automatically adjusted for by the automatic dis-
tance correction function. This function, on the other hand, is for
immediate adjustment, in cases such as driving with tire chain fitted
on tires.
XM SAT SUBSCRIPTION STATUS
The XM NavTraffic subscription status can be checked.
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 switch 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.
The error record displays the time and place of the most recent occurrence of that error. However, take note of
the following points.
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
SIDE VIEW SW
—
—
This item is displayed, but cannot be monitored.
ROOM LAMP
OFF
—
This item is displayed, but not used.
JSNIA2179ZZ
JSNIA2180ZZ
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