Nissan Leaf. Manual - part 89

 

  Index      Nissan     Nissan Leaf (2011-2014 year) - Service and Repair Manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  87  88  89  90   ..

 

 

Nissan Leaf. Manual - part 89

 

 

AV

SYSTEM

AV-347

< SYSTEM DESCRIPTION >

[NAVIGATION WITH BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

• When the selector lever is placed in R (reverse) or the CAMERA switch is pressed, power is supplied to the

cameras. The camera image signals supplied by the cameras are input to the around view monitor control

unit. The around view monitor control unit sends the signals to the AV control unit. The AV control unit dis-

plays the camera images on the display. 

• Dimming signal is input from BCM to adjust the brightness of the display.

COMMUNICATION SIGNAL

AV control unit is connected to TCU via USB communication, and it receives the Telematics information

received by TCU and gives the display and sound output. Telematics operation signals and sound signals are

also sent to TCU.

Auto light adjustment function 

Auto light adjustment function automatically dims/brightens the display according to the ambient light when the

lighting switch is in the 1st or 2nd position. Whether or not the display is dimmed when the lighting switch is in

the 1st position or 2nd position is determined by the output condition of the dimming signal output from the

BCM to the AV control unit. Even if the lighting switch is in the 1st position or 2nd position, the display may not

be dimmed depending on the ambient light sensed by the auto light sensor. For details, refer to 

INL-11, "ILLU-

MINATION CONTROL SYSTEM : System Description"

.

CAN COMMUNICATION

• AV control unit is connected via CAN communication, receives data signal from VCM and combination

meter, and indicates power consumption information, etc. on the display based on the information obtained.

• The AV control unit, which has the vehicle setting function, transmits and receives data on vehicle setting

condition via CAN communication with the BCM.

• AV control unit receives steering angle signal from steering angle sensor via CAN communication and per-

forms control of possible route line in around view monitor image.

• AV control unit receives and sends signals necessary for timer charge and A/C-heater timer operation with

VCM via CAN communication.

Energy Flow Display Function 

The AV control unit receives data signals from the VCM and combination meter via CAN communication and

computes each value using the obtained information to display it.

Vehicle Setting Function

The AV control unit transmits and receives data signals via CAN communication with the BCM, allowing the

following vehicle settings.

• To turn on the automatic interior room lamp (ON/OFF) when the door is unlocked

• To adjust the auto light sensitivity (+/

−)

• To operate the intermittent wiper linked with the vehicle speed (ON/OFF)

• Vehicle setting initialization 

NOTE:

The setting items vary depending on the vehicle specification

TYPE OF VOICE SIGNAL

Reception Voice Signal

Display function

Receiving signal (transmit unit)

Display method

Instantaneous power 
consumption display

• Battery consumption monitor signal 

(VCM) 

• Vehicle speed signal (combination 

meter)

Computes the instantaneous power consumption using the vehi-
cle speed and battery consumption monitor signals, and displays 
the instantaneous power consumption bar.

Possible driving dis-
tance display

• Possible driving distance signal

(Combination meter)

Displays a possible driving distance, based on a possible driving 
distance signal. When the meter indication of a possible driving 
distance is “----”, it is displayed by “

”on the NAVI screen.

Data is retained even with the power switch OFF.

Average power con-
sumption display

• Battery consumption monitor signal 

(VCM) 

• Vehicle speed signal (combination 

meter)

Computes the average power consumption using the battery con-
sumption monitor and vehicle speed signals, and displays it.
The average power consumption is displayed only when 30 sec-
onds have elapsed and the vehicle has been driven 500 m after 
the average power consumption was reset.
Data is retained even with the power switch OFF.

AV-348

< SYSTEM DESCRIPTION >

[NAVIGATION WITH BOSE]

SYSTEM

• Hands-free phone reception voice is output from the cellular phone through the AV control unit to the front

speaker via Bluetooth

®

 communication.

• If the hands-free phone is used while the audio is ON and/or the voice guidance is being output, these

sounds are muted and only the reception voice is output.

Speech Sound Signal

Hands-free phone speech sound is transmitted from the microphone via the AV control unit and Bluetooth

®

communication to the cellular phone.

CARWINGS Reading Voice Signal

• In the case of the CARWINGS reading voice, the AV control unit receives text data from the NISSAN CAR-

WINGS Data Center through the USB harness and outputs them to the front speaker.

• If CARWINGS data is read while the audio is ON and/or the voice guidance is being output, these audio

sounds are muted and only the CARWINGS reading voice is output.

• Depending on the information from the NISSAN CARWINGS Data Center, not only the CARWINGS reading

voice but also background music may be output. In this case, audio output of the front speaker is turned

down 10 dB and then the CARWINGS reading voice is output.

Guide Sound Signal

• Voice signals output during the route guidance of the navigation system are output from the AV control unit

to the front speaker.

• If the voice guidance is output with the audio ON, audio output of the front speaker is turned down 10 dB and

then voice guidance is output.

• Adjusting the volume while the voice guidance is being output can change the volume of the guidance.

AUDIO FUNCTION

• The MP3/WMA playback function enables music to play for a long time: the user need not change the CD

during a long trip. The text display function is also adopted so that the title name and artist name of the ID3

tag/WMA tag can be displayed.

• Bluetooth

®

audio function is adopted to play music data in the portable audio via wireless communication.

• The adoption of the vehicle speed interlock sound volume function reduces the burden of the volume adjust-

ment by the difference between the noises when the vehicle is stopped or running. In addition, the vehicle

speed interlock sound volume function can perform ON/OFF setting and sound volume adjustment on a

scale of one to five.

MP3/WMA Playback Function

This function enables the playback of compressed music files, such as MP3 music files used for the most

widespread broadband music distribution and WMA music files played back with a music player generally built
in Windows

®

 personal computers.

Vehicle Speed Interlock Volume Function

• The AV control unit receives the vehicle speed signal from the combination meter via CAN communication

and changes the sound volume in conjunction with the vehicle speed.

• Using the vehicle speed interlock sound volume function, ON/OFF setting can be carried out as preferred by

users, and sound volume variation caused by vehicle speed change can be adjusted on a scale of one to

three.

Bluetooth

®

Audio Function

• Bluetooth

®

audio function is adopted to play music data in the portable audio in wireless communication.

• Five units of Bluetooth

®

 communication devices including audio devices and cellular phones can be regis-

tered to the AV control unit.

• When the Bluetooth

®

 audio is connected to the portable audio through Bluetooth

®

, it can play the music data

in the portable audio.

• When the Bluetooth

®

 audio is playing the data, operations of the other applications are as shown in the fol-

lowing table.

Cellular phone operation (control) status

Bluetooth

®

 audio playback status

Hands-free phone communication

Hands-free phone incoming call

Answering the call stops audio playback temporarily.

AV

SYSTEM

AV-349

< SYSTEM DESCRIPTION >

[NAVIGATION WITH BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Bluetooth

®

 compliant profile 

Satellite Radio

• Satellite radio tuner is built into AV control unit.

• Audio signal and data signal (satellite radio) are received by satellite antenna. There are input to AV control

unit. AV control unit outputs audio signal to each speaker and data signal to display unit.

USB CONNECTING FUNCTION

USB connector enables iPod

®

 compliant and playback of music files in the USB memory.

*: iPod

®

 is the trademark of Apple Inc. registered in the United States and other countries.

NAVIGATION SYSTEM FUNCTION

Description

• The AV control unit controls navigation function while GPS tuner has built-in map data, GYRO (angle speed

sensor), on the SD card.

• The AV control unit inputs operation signal with communication signal, through front display unit (touch

panel) and multifunction switch and steering switch.

• Guide sound is output to front speaker through from AV control unit when operating navigation system.

• A vehicle position is calculated with the GYRO (angle speed sensor), vehicle sensor, signal from GPS satel-

lite and map data stored on SD card, and transmits the map image signal (RGB image, RGB area, RGB

image synchronizing) to the display.

Position Detection Principle

The navigation system periodically calculates the current vehicle

position according to the following three types of signals.

• Travel distance of the vehicle as determined by the vehicle speed

sensor

• Vehicle turning angle determined by the gyroscope (angular speed

sensor) 

• The travel direction of the vehicle determined by the GPS antenna

(GPS information)

The current position of the vehicle is then identified by comparing the

calculated vehicle position with map data, which is stored in the SD

card (map-matching), and indicated on the screen with a current

location mark. More accurate data is used by comparing position

detection results from GPS to the map-matching.

CARWINGS service

Information channel and E-mail

Audio playback does not stop.

Audio playback stops temporarily during data commu-
nication.
After the communication has been completed, play-
back resumes.

Telephone book transfer

Audio playback does not stop.

For Bluetooth

®

audio, audio playback stops temporari-

ly.
After the telephone book has been transferred, play-
back resumes.

Profile name

Abbreviation

Version

Advanced Audio Distribution Profile

A2DP

Ver. 1.2

Audio Video Remote Control Profile

AVRCP

Ver. 1.3

Cellular phone operation (control) status

Bluetooth

®

 audio playback status

JSNIA3779GB

AV-350

< SYSTEM DESCRIPTION >

[NAVIGATION WITH BOSE]

SYSTEM

The current position is calculated by detecting the travel distance

from the previous calculation point, and its direction change.

• Travel distance

The travel distance is generated from the vehicle speed sensor

input signal. The automatic distance correction function is adopted

for preventing a miss-detection of the travel distance because of

tire wear etc.

• Travel direction

The gyroscope (angular velocity sensor) and GPS antenna (GPS

information) generate the change of the travel direction. Both have

advantages and disadvantages as per the following descriptions.

Input signals are prioritized in each situation. However, this order of priority may change in accordance with

more detailed travel conditions so that the travel direction is detected more accurately.

Map-matching

Map-matching repositions the vehicle on the road map when a new

location is judged to be more accurate. This is done by comparing

the current vehicle position (calculated by the normal position detec-

tion method) from the map data stored in the SD card.

There is a possibility that the vehicle position may not be corrected in the following case, and when vehicle is

driven over a certain distance or time in which GPS information is hard to receive. Correct manually the cur-

rent location mark on the screen.

• In map-matching, several alternative routes are prepared and pri-

oritized in addition to the road judged as currently driving on.

Therefore, due to errors in the distance and/or direction, an incor-

rect road may be prioritized, and the current location mark may be

repositioned to the incorrect road.

If two roads are running in parallel, they are of the same priority.

Therefore, the current location mark may appear on either of them

alternately, depending on maneuvering of the steering wheel and

configuration of the road, etc.

SEL684V

Type

Advantage

Disadvantage

Gyroscope (angular velocity 
sensor)

The turning angle is precisely detected.

Errors are accumulated when driving a long dis-
tance without stopping.

GPS antenna (GPS informa-
tion)

The travel direction (North/South/East/West) is 
detected.

The travel direction is not precisely detected when 
driving slowly.

SEL685V

SEL686V

 

 

 

 

 

 

 

Content   ..  87  88  89  90   ..