Nissan Pathfinder. Manual — part 54
AV
AUDIO SYSTEM
AV-43
< SYMPTOM DIAGNOSIS >
[BASE AUDIO]
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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
• Audio unit power supply and ground cir-
cuits malfunction.
Refer to
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:
-
(instru-
ment panel tweeter).
-
(front door
speaker).
-
(rear door
speaker).
• Malfunction in speaker.
Refer to:
-
AV-51, "Removal and Installation"
(instru-
ment panel tweeter).
-
AV-50, "Removal and Installation"
door speaker).
-
AV-52, "Removal and Installation"
door speaker).
• Malfunction in audio unit.
Refer to
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:
-
ment panel tweeter).
-
(front door
speaker).
-
(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.
.
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
.
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-
• Poor connector connection of antenna or
.
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-45
< SYMPTOM DIAGNOSIS >
[BASE AUDIO]
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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.
1.
Audio unit bracket (LH)
2.
A/C auto amp.
3.
Audio unit
4.
Audio unit bracket (RH)
AWNIA3155ZZ
ALJIA1082ZZ
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