Nissan Versa Sedan. Instruction — part 8

AV-24

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

REAR DOOR SPEAKER

Is the inspection result normal?

YES

>> Replace rear door speaker. Refer to

AV-30, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to

AV-28, "Removal and Installation"

.

Audio unit connector M43

Condition

Reference value

(+)

(-)

Terminal

Terminal

4

5

Audio signal output

13

14

SKIA0177E

AV

AUDIO SYSTEM

AV-25

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

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SYMPTOM DIAGNOSIS

AUDIO SYSTEM

Symptom Table

INFOID:0000000009266707

RELATED TO AUDIO

Symptoms

Check items

Probable malfunction location

The disk cannot be removed.

Audio unit

Malfunction in audio unit.
Refer to

AV-28, "Removal and Installation"

.

No sound comes out or the level of the
sound is low.

No sound from all speakers.

• Speaker circuit shorted to ground.

Refer to

AV-12, "Wiring Diagram"

.

• Audio unit power supply and ground cir-

cuits malfunction.
Refer to

AV-20, "AUDIO UNIT : Diagno-

sis Procedure"

.

Only a certain speaker (front door speaker
LH, front door speaker RH, rear door
speaker LH, rear door speaker RH) does
not output sound.

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

audio unit and speaker.
Refer to:

-

AV-21, "Diagnosis Procedure"

(front door

speaker).

-

AV-23, "Diagnosis Procedure"

(rear door

speaker).

• Malfunction in speaker.

Refer to:

-

AV-29, "Removal and Installation"

(front

door speaker).

-

AV-30, "Removal and Installation"

(rear

door speaker).

• Malfunction in audio unit.

Refer to

AV-28, "Removal and Installa-

tion"

.

Noise is mixed with audio.

Noise comes out from all speakers.

Malfunction in audio unit.
Refer to

AV-28, "Removal and Installation"

.

Noise comes out only from a certain speak-
er (front door speaker LH, front door speak-
er RH, rear door speaker LH, rear door
speaker RH).

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

audio unit and speaker.
Refer to:

-

AV-21, "Diagnosis Procedure"

(front door

speaker).

-

AV-23, "Diagnosis Procedure"

(rear door

speaker).

• Malfunction in speaker.
• Poor Installation of speaker (e.g. back-

lash and looseness).
Refer to:

-

AV-29, "Removal and Installation"

(front

door speaker).

-

AV-30, "Removal and Installation"

(rear

door speaker).

• Malfunction in audio unit.

Refer to

AV-28, "Removal and Installa-

tion"

.

Noise is mixed with radio only (when the ve-
hicle hits a bump or while driving over bad
roads)

Poor connector connection of antenna or
antenna feeder.
Refer to

AV-32, "Feeder Layout"

.

AV-26

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

AUDIO SYSTEM

No radio reception or poor reception.

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

poor reception is caused even after mov-
ing to a service area with good reception
(e.g. a place with clear view and no ob-
stacles generating external noises).

Poor connector connection of antenna or
antenna feeder.
Refer to

AV-32, "Feeder Layout"

.

Buzz/rattle sound from speaker

The majority of buzz/rattle sounds are not
indicative of an issue with the speaker, usu-
ally something nearby the speaker is caus-
ing the buzz/rattle.

Refer to "SQUEAK AND RATTLE TROU-
BLE DIAGNOSIS" in the appropriate interi-
or trim section.

Symptoms

Check items

Probable malfunction location

AV

NORMAL OPERATING CONDITION

AV-27

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

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NORMAL OPERATING CONDITION

Description

INFOID:0000000009266708

The majority of the audio troubles 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 to 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

A whistling noise occurs while the engine speed is
high. A booming noise occurs while the engine is
running and the lighting switch is ON.

• Generator

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.

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