Nissan Murano. Instruction — part 70
AV-58
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH COLOR DISPLAY]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
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:
Control unit (AV control unit) and 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
• If multiple errors occur at the same time for a single unit, the screen switch colors are determined according 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.
SELF-DIAGNOSIS RESULTS
Check the applicable display at the following table, and then repair the malfunctioning parts.
Only Unit Part Is Displayed In Red.
A Connecting Cable Between Units Is Displayed In Yellow.
Diagnosis results
Unit
Connec-
tion line
Normal
Green
Green
Connection malfunction
Gray
Yellow
Unit malfunction
Note
Red
Green
JSNIA2528ZZ
JSNIA0141GB
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
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-59
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH COLOR DISPLAY]
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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/Adjust-
ment 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
⇔
SAT
When either one of the following items is
detected:
• satellite radio tuner power supply and
ground circuit are malfunctioning.
• communication circuits between AV con-
trol unit and satellite radio tuner are mal-
functioning.
• request signal circuit between AV control
unit and satellite radio tuner are malfunc-
tioning.
• Satellite radio tuner power supply and
ground circuit.
Refer to
• Communication circuit between AV con-
trol unit and satellite radio tuner.
• Request signal circuit between AV con-
trol unit and satellite radio tuner.
Control unit
⇔
BTHF
When either one of the following items is
detected:
• TEL adapter unit power supply and
ground circuits are malfunctioning.
• AV communication circuits between AV
control unit and TEL adapter unit are
malfunctioning.
• TEL adapter unit power supply and
ground circuits.
Refer to
.
• AV communication circuits between AV
control unit and TEL adapter unit.
JSNIA0147GB
AV-60
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH COLOR DISPLAY]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Display Diagnosis
Vehicle Signals
A comparison check can be made of each actual vehicle signal and
the signals recognized by the system.
JSNIA2233GB
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
Lighting switch is ON
—
OFF
Lighting switch is OFF
Ignition
ON
Ignition switch is ON
—
OFF
Ignition switch is in ACC position
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-61
< SYSTEM DESCRIPTION >
[BASE AUDIO WITH COLOR DISPLAY]
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Speaker Test
Select “Speaker Test” to display the Speaker Diagnosis screen.
Press “Start” to generate a test tone in a speaker. Press “Start” again
to generate a test tone in the next speaker. Press “End” to stop the
test tones.
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 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.
The frequency of occurrence is displayed in a count up manner. The actual count up method differs depending
on the error item.
Count up method A
• The counter resets to 0 if an error occurs when ignition switch is turned ON. The counter increases by 1 if
the condition is normal at a next ignition 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.
Count up method B
• The counter increases by 1 if an error occurs when ignition switch is ON. The counter will not decrease even
if the condition is normal at the next ignition 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.
Reverse
ON
Selector lever is in R position
Changes in indication may be delayed. This is normal.
OFF
Selector lever is in any position oth-
er than R
Diagnosis item
Display
Vehicle status
Remarks
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)
Count up method B
Other than the above
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