Nissan Sentra. Instruction — part 32

AV-120

< SYMPTOM DIAGNOSIS >

[DISPLAY AUDIO WITHOUT BOSE]

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000009758862

RELATED TO NOISE

The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference,

etc.).

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

RELATED TO HANDS-FREE PHONE

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

Symptom

Cause and Counter measure

Does not recognize cellular phone connection (No connection is
displayed on the display at the guide).

Some Bluetooth

®

enabled cellular phones may not be recognized

by the in-vehicle phone module.
Refer to “RELATED TO HANDS-FREE PHONE (Check Compati-
bility)” in

AV-117, "Symptom Table"

.

Cannot use hands-free phone.

Customer will not be able to use a hands-free phone under the fol-
lowing conditions:
• The vehicle is outside of the telephone service area.
• The vehicle is in an area where it is difficult to receive radio

waves; such as in a tunnel, in an underground parking garage,
near a tall building or in a mountainous area.

• The cellular phone is locked to prevent it from being dialed.
NOTE:
While a cellular phone is connected through the Bluetooth

®

wire-

less connection, the battery power of the cellular phone may dis-
charge quicker than usual. The Bluetooth

®

Hands-Free Phone

System cannot charge cellular phones.

AV

NORMAL OPERATING CONDITION

AV-121

< SYMPTOM DIAGNOSIS >

[DISPLAY AUDIO WITHOUT BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

The other party’s voice cannot be heard by hands-free phone.

When the radio wave condition is not ideal or ambient sound is too
loud, it may be difficult to hear the other person’s voice during a
call.

Poor sound quality.

Do not place the cellular phone in an area surrounded by metal or
far away from the in-vehicle phone module to prevent tone quality
degradation and wireless connection disruption.

Symptom

Cause and Counter measure

AV-122

< REMOVAL AND INSTALLATION >

[DISPLAY AUDIO WITHOUT BOSE]

AUDIO UNIT

REMOVAL AND INSTALLATION

AUDIO UNIT

Exploded View

INFOID:0000000009758863

Removal and Installation

INFOID:0000000009758864

REMOVAL

1. Disconnect the negative battery terminal. Refer to

PG-50, "Removal and Installation (Battery)"

.

2. Remove cluster lid C lower. Refer to

IP-20, "Removal and Installation - Cluster Lid C Lower"

.

3. Remove the audio unit screws, then pull out the audio unit.
4. Disconnect the harness connectors from the audio unit and remove.

INSTALLATION

Installation is in the reverse order of removal.

1. Audio unit

2.

Audio unit bracket (LH)

3.

Audio unit bracket (RH)

ALNIA1403ZZ

AV

FRONT TWEETER

AV-123

< REMOVAL AND INSTALLATION >

[DISPLAY AUDIO WITHOUT BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

FRONT TWEETER

Removal and Installation

INFOID:0000000009758865

REMOVAL

1. Remove the front pillar finisher. Refer to

INT-24, "FRONT PILLAR FINISHER : Removal and Installation"

.

2. Disconnect the harness connector (B) from the front tweeter

speaker.

3. Remove the front tweeter speaker screw (A) from the front

tweeter speaker (1) and remove.

INSTALLATION

Installation is in the reverse order of removal.

ALNIA1405ZZ