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Nissan Pathfinder. Manual - part 54

AUDIO SYSTEM

AV-43

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

SYMPTOM DIAGNOSIS

AUDIO SYSTEM

Symptom Table

INFOID:0000000009174394

RELATED TO AUDIO

Symptoms

Check items

Probable malfunction location

The disk cannot be removed.

Audio unit

Malfunction in audio unit.
Refer to

AV-46, "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-21, "Wiring Diagram"

• Audio unit power supply and ground cir-

cuits malfunction.
Refer to

AV-33, "AUDIO UNIT : Diagno-

sis Procedure"

Only a certain speaker (instrument panel
tweeter LH, instrument panel tweeter RH,
front door speaker LH, front door speaker
RH, rear door speaker LH, rear door speak-
er RH) does not output sound.

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

audio unit and speaker.
Refer to:

AV-37, "Diagnosis Procedure"

(instru-

ment panel tweeter).

AV-35, "Diagnosis Procedure"

(front door

speaker).

AV-39, "Diagnosis Procedure"

(rear door

speaker).

• Malfunction in speaker.

Refer to:

AV-51, "Removal and Installation"

(instru-

ment panel tweeter).

AV-50, "Removal and Installation"

(front

door speaker).

AV-52, "Removal and Installation"

(rear

door speaker).

• Malfunction in audio unit.

Refer to

AV-46, "Removal and Installa-

tion"

AV-44

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

AUDIO SYSTEM

Noise is mixed with audio.

Noise comes out from all speakers.

Malfunction in audio unit.
Refer to

AV-46, "Removal and Installation"

Noise comes out only from a certain speak-
er (instrument panel tweeter LH, instrument
panel tweeter RH, front door speaker LH,
front door speaker 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-37, "Diagnosis Procedure"

(instru-

ment panel tweeter).

AV-35, "Diagnosis Procedure"

(front door

speaker).

AV-39, "Diagnosis Procedure"

(rear door

speaker).

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

lash and looseness).
Refer to:

AV-51, "Removal and Installation"

(instru-

ment panel tweeter).

AV-50, "Removal and Installation"

(front

door speaker).

AV-52, "Removal and Installation"

(rear

door speaker).

• Malfunction in audio unit.

Refer to

AV-46, "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-53, "Location of Antennas"

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).

• Antenna amp. ON signal circuit malfunc-

tion.
Refer to

AV-18, "Reference Value"

• Poor connector connection of antenna or

antenna feeder.
Refer to

AV-53, "Location of Antennas"

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

NORMAL OPERATING CONDITION

AV-45

< SYMPTOM DIAGNOSIS >

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NORMAL OPERATING CONDITION

Description

INFOID:0000000009174395

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

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

AV-46

< REMOVAL AND INSTALLATION >

[BASE AUDIO]

AUDIO UNIT

REMOVAL AND INSTALLATION

AUDIO UNIT

Exploded View

INFOID:0000000009174396

Removal and Installation

INFOID:0000000009174397

REMOVAL

1. Disconnect the negative battery terminal. Refer to

PG-90, "Removal and Installation"

2. Remove cluster lid C. Refer to

IP-22, "CLUSTER LID C : Removal and Installation"

3. Release cluster lid C lower pawls using a suitable tool and

remove.

: Pawl

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

Audio unit bracket (LH)

A/C auto amp.

Audio unit

Audio unit bracket (RH)

AWNIA3155ZZ

ALJIA1082ZZ

Content .. 52 53 54 55 ..