Nissan Pathfinder (2008 year). Manual - part 25

AV-40

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AUDIO SYSTEM

FUNCTION DIAGNOSIS

AUDIO SYSTEM

System Diagram

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System Description

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AUDIO SYSTEM

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AV

AUDIO SYSTEM

AV-41

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The audio system consists of the following components
• AV control unit
• Display unit
• Window antenna
• Steering wheel audio control switches
• A/C and AV switch assembly
• Front door speakers
• Front tweeters
• Rear door speakers
When the audio system is on, radio signals are received by the window antenna. The AV control unit then
sends audio signals to the front door speakers, front tweeters and rear door speakers.
Refer to Owner's Manual for audio system operating instructions.

SATELLITE RADIO SYSTEM

The satellite radio system consists of the following components
• Satellite antenna
• Satellite radio tuner
When the satellite radio system is on, radio signals are supplied to the satellite radio tuner from the satellite
antenna. The satellite radio tuner then sends audio signals to the AV control unit.
Refer to Owner's Manual for satellite radio system operating instructions.

SPEED SENSITIVE VOLUME SYSTEM

The volume level of this system goes up and down automatically in proportion to vehicle speed. The control
level can be set by the customer. Rever to the Owner's Manual for operating instructions.

AV-42

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AUDIO SYSTEM

Component Parts Location

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Component Description

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1.

Steering wheel audio control switches

2.

Front tweeter LH M109

3.

AV control unit M42, M43, M45, M46, 
M70

4.

A/C and AV switch assembly M98

5.

Display unit M93

6.

Front tweeter RH M111

7.

Satellite radio tuner (factory installed) 
M41, M129

8.

Aux. jack M85

9.

Front door speaker
LH D12
RH D112

10. Rear door speaker

LH D207
RH D307

11.

Rear view camera control unit B176 
(located behind luggage side finisher 
RH)

12. Rear view camera D551

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Part name

Description

AV control unit

Controls audio system and satellite radio system functions

Display unit

Displays audio and climate control related information

A/C and AV switch assembly

• All audio and A/C operations can be operated
• switch signal is output to the AV control unit and A/C auto amp

Steering wheel audio control switches

• Audio operation can be operated
• Steering switch signal (operation signal) is output to AV control unit

AV

AUDIO SYSTEM

AV-43

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Front door speakers

• Outputs audio signal from AV control unit
• Outputs high, mid and low range sounds

Front  tweeters

• Outputs audio signal from AV control unit
• Outputs high range sounds

Rear door speakers

• Outputs audio signal from AV control unit
• Outputs high, mid and low range sounds

Antenna amp.

• Radio signal received by window antenna is amplified and sent to AV con-

trol unit

• Power (antenna amp. ON signal) is supplied from AV control unit

Satellite radio tuner

• Receives radio signals from satellite antenna
• Sends audio signals to AV control unit

Satellite antenna

Audio signal (satellite radio) is received and output to AV control unit.

Part name

Description

AV-44

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REAR VIEW MONITOR SYSTEM

REAR VIEW MONITOR SYSTEM

System Diagram

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System Description

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When the selector is in the R position, the display shows a view to the rear of the vehicle. Lines which indicate
the vehicle clearance and distances are also displayed.

AV COMMUNICATION LINE

The rear view camera control unit is connected to the AV control unit using an AV communication line. This
line is used to transmit and receive data.

Component Parts Location

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Refer to 

AV-42, "Component Parts Location"

.

Component Description

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Part name

Description

AV control unit

Camera image signal is sent from rear view camera control unit

Rear view camera control unit

• Receives reverse signal from back-up lamp relay
• Receives rear view camera image signal
• Sends camera ON signal to rear view camera
• Sends image signal to AV control unit

Rear view camera

• Receives camera ON signal from rear view camera control unit
• Sends image signal to rear view camera control unit

AV

DVD PLAYER

AV-45

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DVD PLAYER

System Diagram

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System Description

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The DVD entertainment system consists of the following components
• AV control unit
• Display unit
• DVD player
• Video monitor
• A/C and AV switch assembly
• Steering wheel audio control switches
• Front tweeters
• Front door speakers
• Rear door speakers
When the DVD entertainment system is on, video signals are sent from the DVD player to the video monitor.
Audio signals are sent to the AV control unit. Audio signals can be directed through the vehicle speakers or
through wireless infrared headphones. Refer to the Owner's Manual for complete DVD entertainment system
operating instructions. 

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AV-46

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DVD PLAYER

Component Parts Location

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Component Description

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1.

Steering wheel audio control switches

2.

AV control unit M42, M43, M45, M46, 
M70

3.

A/C and AV switch assembly M98

4.

Display unit M93

5.

DVD player M205 (located in center 
console)

6.

Infrared headphone and remote re-
ceiver/transmitter (part of video moni-
tor assembly)

7.

Video monitor B76

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Part name

Description

DVD player

• Outputs DVD video to video monitor
• Outputs DVD audio to the AV control unit

Video monitor

• Receives and displays the DVD video signal

AV control unit

• Controls audio system and DVD entertainment system functions

A/C and AV switch assembly

• All audio and A/C operations can be operated
• Switch signal is output to the AV control unit and A/C auto amp

Steering wheel audio control switches

• Audio operation can be operated
• Steering switch signal (operation signal) is output to AV control unit

Front door speakers

• Outputs audio signal from AV control unit
• Outputs high, mid and low range sounds

Front tweeters

• Outputs audio signal from AV control unit
• Outputs high range sounds

Rear door speakers

• Outputs audio signal from AV control unit
• Outputs high, mid and low range sounds

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-47

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV CONTROL UNIT

AV CONTROL UNIT : Diagnosis Description

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DESCRIPTION 

• Diagnosis function consists of the "Self-Diagnosis" mode performed automatically and the "Confirmation/

Adjustment" mode operated manually.

• "Self-Diagnosis" mode checks for connections between the units constituting this system, analyzes each

individual unit at the same time, and displays the results on the LCD screen.

• "Confirmation/Adjustment" mode is used to perform trouble diagnosis that requires operation and judgment

by an operator (trouble that cannot be automatically judged by the system), to check/change the set value,
and to display the error history of the AV control unit.

DIAGNOSIS ITEM 

OPERATION PROCEDURE 

1.

Start the engine.

2.

Turn the audio system off.

3.

While pressing the “SETTING” button, turn the volume control
dial counterclockwise 30 clicks or more.

Mode

Description

Self-diagnosis

• AV control unit diagnosis
• Analyzes connection between the AV control unit, front display, Blue-

tooth, DVD deck, satellite tuner,  switches and rear view camera con-
trol unit.

CONFIRMATION/
ADJUSTMENT

Display diagnosis

Color spectrum bar

Color tone of the screen can be checked by the display of a color bar.

Gradation bar

Shading of the screen can be checked by the display of a gray scale.

Vehicle signals

The following vehicle signals are analyzed: Vehicle speed signal, park-
ing brake signal, light signal, ignition switch signal, and reverse signal.

Speaker test

Connection can be checked by sending a test tone to each speaker.

Climate control

Start automatic air conditioner self-diagnosis

Error history

Diagnosis results previously stored in the memory are displayed in this 
mode.

Vehicle CAN diagnosis

The transmitting/receiving of CAN communication can be monitored.

AV COMM diagnosis

The transmitting/receiving of AV communication can be monitored.

Delete connection log

Erase the error history and connection history of the unit.

Initialize settings

All audio settings are reset to default levels.

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