Nissan Murano. Manual - part 63

AV-30

< WIRING DIAGRAM >

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JRNWC8924GB

AV

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AV-31

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JRNWC8925GB

AV-32

< SYMPTOM DIAGNOSIS >

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AUDIO SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

AUDIO SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000009721566

Symptoms

Check items

Possible malfunction location / Action to take

Audio unit does not start.

—

Audio unit power supply and ground circuit.
Refer to 

AV-19, "AUDIO UNIT : Diagnosis Procedure"

.

No sound comes out.

No sound from all speakers.

Audio unit power supply and ground circuit.
Refer to 

AV-19, "AUDIO UNIT : Diagnosis Procedure"

.

Only a certain speaker (front right, 
front left, rear right, or rear left, etc.) 
does not output sound.

• Poor connector connection of speaker.
• Sound signal circuit malfunction between audio unit and 

speaker.

• Malfunction in speaker.
• Malfunction in audio unit.

Noise is mixed with audio. 

Noise comes out from all speakers.

Malfunction in audio unit.

Noise comes out only from a certain 
speaker (front right, front left, rear 
right, or rear left, etc.).

• Poor connector connection of speaker.
• Sound signal circuit malfunction between audio unit and 

speaker.

• Malfunction in speaker.
• Poor installation of speaker (e.g. backlash and looseness)
• Malfunction in audio unit.

Noise is mixed with radio only 
(when the car hits a bump or while 
driving over bad roads).

• Poor connector connection of antenna or antenna feeder.
• Loose antenna base mounting nut. Refer to 

AV-44, "Explod-

ed View"

Radio is not received or poor re-
ception.

• Other audio sounds are normal.
• Any radio cannot be received or 

poor reception is caused even af-
ter moving to a service area with 
good reception (e.g. a place with 
clear view and no obstacles gen-
erating external noises). 

• Antenna amp. ON signal circuit malfunction.
• Poor connector connection of antenna or antenna feeder.
• Loose antenna base mounting nut. Refer to 

AV-44, "Explod-

ed View"

Audio display unit does not 
work.

—

• Audio display unit power supply and ground circuits.
• AV communication circuits between audio unit and audio 

display unit.

AV

NORMAL OPERATING CONDITION

AV-33

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NORMAL OPERATING CONDITION

Description

INFOID:0000000009721567

NOTE:
• Audio operation information, refer to Owner's Manual.
• The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference,

etc.).

NOISE

The following noise results from variations in field strength, such as fading noise and multi-path noise, or
external noise from trains and other sources. It is not a malfunction.
• Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-

tains or buildings blocking the signal.

• Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the

antenna at a different time from the waves that reflect off mountains or buildings.

The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-
tion of each piece of electrical equipment, and then determine the cause.
NOTE:
The source of the noise can be easily found by listening to the noise while removing the fuses of electrical
components, one by one.

Types of Noise and Possible Causes

RELATED TO AUDIO

• The majority of the audio malfunctions are the result of outside causes (bad CD, electromagnetic interfer-

ence, etc.). Check the symptoms below to diagnose the malfunction.

• The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.

Check that noise is caused and/or changed by engine speed, ignition switch turned to each position, and
operation of each piece of electrical equipment. Then determine the cause.

NOTE:
• CD-R is not guaranteed to play because they can contain compressed audio (MP3, WMA) or could be incor-

rectly mastered by the customer on a computer.

• Check that the CDs carry the Compact Disc Logo. If not, the disc is not mastered to the red book Compact

Disc Standard and may not play.

Occurrence condition

Possible cause

Occurs only when engine is ON.

A continuous growling noise occurs. The speed of 
the noise varies with changes in the engine speed.

• Ignition components

The occurrence of the noise is linked with the operation of the fuel pump.

• Fuel pump condenser

Noise only occurs when various 
electrical components are oper-
ating.

A cracking or snapping sound occurs with the op-
eration of various switches.

• Relay malfunction, audio unit malfunction

The noise occurs when various motors are operat-
ing.

• Motor case ground
• Motor

The noise occurs constantly, not just under certain conditions.

• Rear defogger coil malfunction
• Open circuit in printed heater
• Poor ground of antenna feeder line

A cracking or snapping sound occurs while the vehicle is being driven, especially when 
it is vibrating excessively.

• Ground wire of body parts
• Ground due to improper part installation
• Wiring connections or a short circuit