Nissan Xterra. Manual — part 17
AV-60
< SYSTEM DESCRIPTION >
[DISPLAY AUDIO]
SYSTEM
Bluetooth
®
Control Unit
When the ignition switch is turned to ACC or ON, the Bluetooth
®
control unit will power up. During power up,
the Bluetooth
®
control unit is initialized and performs various self-checks. Initialization may take up to 20 sec-
onds. If a phone is present in the vehicle and paired with the Bluetooth
®
control unit, Nissan Voice Recognition
will then become active. Bluetooth
®
telephone functions can be turned off using the Nissan Voice Recognition
system.
Steering Wheel Audio Control Switches
When buttons on the steering wheel audio control switch are pushed, the resistance in steering wheel audio
control switch circuit changes, depending on which button is pushed. The Bluetooth
®
control unit uses this sig-
nal to perform various functions while navigating through the voice recognition system.
The following functions can be performed using the steering wheel audio control switch:
• Initiate self-diagnosis of the Bluetooth
®
telephone system
• Start a voice recognition session
• Answer and end telephone calls
• Adjust the volume of calls
Microphone
The microphone is located in the roof console assembly. The microphone sends a signal to the Bluetooth
®
control unit. The microphone can be actively tested during self-diagnosis.
Audio Unit
The audio unit receives signals from the Bluetooth
®
control unit and sends audio signals to the speakers.
USB CONNECTION FUNCTION
• iPod
®
or music files in USB memory can be played.
• Sound signals are transmitted from USB connector and AUX jack to the audio unit and output to each
speaker and tweeter.
• iPod
®
is recharged when connected to USB connector and AUX jack.
NOTE:
Use the enclosed USB harness when connecting iPod
®
to USB connector and AUX jack.
iPod
®
is a trademark of Apple inc., registered in the U.S. and other countries.
AV
DIAGNOSIS SYSTEM (AUDIO UNIT)
AV-61
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (AUDIO UNIT)
Description
INFOID:0000000009485177
The audio unit on board diagnosis performs the functions listed in the table below:
On Board Diagnosis Function
INFOID:0000000009485178
SELF DIAGNOSIS MODE
Audio Unit Self Diagnosis
1. Select Self Diagnosis.
2. Self diagnosis screen is displayed. The bar graph visible in center of screen indicates progress of self
diagnosis.
3. 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.
1: Control unit (audio unit) is displayed in red.
• Replace audio unit if Self Diagnosis did not run because control unit malfunction is indicated. The symptom is audio unit internal
error. Refer to
AV-108, "Removal and Installation"
.
• 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.
Mode
Description
Self Diagnosis
• Audio unit diagnosis.
• Diagnoses the connections across system components.
Confirmation/
Adjustment
Display Diagnosis
The following check functions are available: color tone check by color bar
display and white display, light and shade check by gray scale display.
Vehicle Signals
Diagnosis of signals can be performed for vehicle speed, lights, reverse,
EQ pin, destination.
Speaker Test
The connection of a speaker can be confirmed by test tone.
Error History
The system malfunction and the frequency when occurring in the past are
displayed. When the malfunctioning item is selected, the time and place
that the selected malfunction last occurred are displayed.
AV COMM Diagnosis
The communication condition of each unit of display audio system can be
monitored.
Delete Unit Connection Log
Erase the connection history of unit and error history.
Initialize Setting
Initializes the audio unit memory.
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Diagnosis results
Unit
Connection line
Normal
Green
Green
Connection malfunction
Gray
Yellow
Unit malfunction
1
Red
Green
AV-62
< SYSTEM DESCRIPTION >
[DISPLAY AUDIO]
DIAGNOSIS SYSTEM (AUDIO UNIT)
4. Comments of self diagnosis results can be viewed in the diagno-
sis result screen.
Audio Unit Self Diagnosis Results
Audio Unit Confirmation/Adjustment
1. Select Confirmation/Adjustment.
2. Select each switch on the Confirmation/Adjustment screen to
display the relevant trouble diagnosis screen. Press the BACK
switch to return to the initial Confirmation/Adjustment screen.
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Only Unit Part Is Displayed In Red
Screen switch
Description
Possible cause
Control unit
Malfunction is detected in audio unit power
supply and ground circuits.
• Audio unit power supply or ground cir-
cuits.
Refer to
.
• If no malfunction is detected in audio unit
power supply and ground circuits, re-
place audio unit. Refer to
.
A Connecting Cable Between Units Is Displayed In Yellow
Area with yellow connection lines
Description
Possible cause
Control unit
⇔ BTHF
When one of the following is detected:
• malfunction is detected in Bluetooth
®
control unit power supply and ground cir-
cuits.
• malfunction is detected in AV communi-
cation circuits between audio unit and
Bluetooth
®
control unit.
• Bluetooth
®
control unit power supply or
ground circuits.
Refer to
TROL UNIT : Diagnosis Procedure"
• AV communication circuits between au-
dio unit and Bluetooth
®
control unit.
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AV
DIAGNOSIS SYSTEM (AUDIO UNIT)
AV-63
< SYSTEM DESCRIPTION >
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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.
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 gener-
ate a test tone in the next speaker. Press End to stop the test tones.
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 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 is set to 40 if an error occurs. 1 is subtracted from the counter if the condition is normal at a next
ignition ON cycle.
• The counter lower limit is 1. The counter can be reset (no error record display) with the Delete log switch.
Count up method B
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