Nissan Altima L32. Manual - part 54

AV-208

< ECU DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

BLUETOOTH CONTROL UNIT

41

(SB)

–

M-CAN jump-

er-1

–

–

–

42

(SB)

–

M-CAN (-) 2

–

–

–

Terminal

 (Wire color)

Item

Signal 

input/

output

Condition

Reference value

(Approx.)

+

–

Ignition 

switch

Operation

AV

AUDIO SYSTEM (COUPE)

AV-209

< SYMPTOM DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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SYMPTOM DIAGNOSIS

AUDIO SYSTEM (COUPE)

Symptom Table

INFOID:0000000004206487

AUDIO SYSTEM

CD

SATELLITE RADIO

HANDS-FREE PHONE

Symptom

Possible cause

Reference page

Inoperative

• Audio unit power circuit
• Audio unit

•

AV-104

•

AV-215

Steering switch does not operate

• Steering wheel audio control switch
• Audio unit

•

AV-141

•

AV-215

All speakers do not sound

• Audio unit
• Audio unit power circuit
• BOSE speaker amp. ON signal 
• BOSE speaker amp. ground circuit
• BOSE speaker amp. 

•

AV-215

•

AV-104

•

AV-140

•

AV-104

•

AV-216

One or several speakers do not sound

• Door speaker
• Front tweeter
• Center speaker
• Rear tweeter
• Subwoofer

•

AV-114

•

AV-120

•

AV-126

•

AV-128

•

AV-134

Symptom

Possible cause

Reference page

CD cannot be inserted.

Audio unit

AV-215

CD cannot be ejected.

The CD cannot be played.

The sound skips, stops suddenly, or is distorted.

Symptom

Possible cause

Reference page

Inoperative

• Satellite radio tuner power or ground circuit
• Satellite radio tuner communication circuit
• Satellite radio tuner

•

AV-110

•

AV-147

•

AV-223

Right or left channel does not sound

• Satellite radio tuner right channel audio signal circuit
• Satellite radio tuner left channel audio signal circuit
• Satellite radio tuner

•

AV-151

•

AV-151

•

AV-223

Symptom

Possible cause

Reference page

Inoperative

• Bluetooth control unit power and ground circuit
• Bluetooth control unit

•

AV-111

•

AV-235

Steering switch does not operate

• Steering wheel audio control switch
• Bluetooth control unit

•

AV-141

•

AV-235

Voice activated control does not operate

• Microphone
• Steering wheel audio control switch
• Bluetooth control unit

•

AV-155

•

AV-141

•

AV-235

AV-210

< SYMPTOM DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

AUDIO SYSTEM (SEDAN)

AUDIO SYSTEM (SEDAN)

Symptom Table

INFOID:0000000004206488

AUDIO SYSTEM

CD

SATELLITE RADIO

HANDS-FREE PHONE

Symptom

Possible cause

Reference page

Inoperative

• Audio unit power circuit
• Audio unit

•

AV-109

•

AV-215

Steering switch does not operate

• Steering wheel audio control switch
• Audio unit

•

AV-144

•

AV-215

All speakers do not sound

• Audio unit
• Audio unit power circuit
• BOSE speaker amp. ON signal 
• BOSE speaker amp. ground circuit
• BOSE speaker amp. 

•

AV-215

•

AV-109

•

AV-140

•

AV-109

•

AV-216

One or several speakers do not sound

• Front door speaker
• Tweeter
• Center speaker
• Rear door speaker
• Subwoofer

•

AV-117

•

AV-123

•

AV-126

•

AV-131

•

AV-134

Symptom

Possible cause

Reference page

CD cannot be inserted.

Audio unit

AV-215

CD cannot be ejected.

The CD cannot be played.

The sound skips, stops suddenly, or is distorted.

Symptom

Possible cause

Reference page

Inoperative

• Satellite radio tuner power or ground circuit
• Satellite radio tuner communication circuit
• Satellite radio tuner

•

AV-110

•

AV-149

•

AV-223

Right or left channel does not sound

• Satellite radio tuner right channel audio signal circuit
• Satellite radio tuner left channel audio signal circuit
• Satellite radio tuner

•

AV-153

•

AV-153

•

AV-223

Symptom

Possible cause

Reference page

Inoperative

• Bluetooth control unit power and ground circuit
• Bluetooth control unit

•

AV-111

•

AV-103

Steering switch does not operate

• Steering wheel audio control switch
• Bluetooth control unit

•

AV-144

•

AV-103

Voice activated control does not operate

• Microphone
• Steering wheel audio control switch
• Bluetooth control unit

•

AV-155

•

AV-144

•

AV-103

AV

NORMAL OPERATING CONDITION

AV-211

< SYMPTOM DIAGNOSIS >

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NORMAL OPERATING CONDITION

Description

INFOID:0000000004206489

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 which 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 determine the cause.

NOTE:

The source of the noise can be found easily by listening to the noise while removing the fuses of electrical

components, one by one.

Type of Noise and Possible Cause

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