Nissan Pathfinder (2010 year). Instruction — part 27
AV
AUDIO UNIT
AV-23
< ECU DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Wiring Diagram
INFOID:0000000005259258
ABNWA0589GB
2010 Pathfinder
2010 Pathfinder
AV-24
< ECU DIAGNOSIS >
[BASE AUDIO]
AUDIO UNIT
ABNIA1496GB
2010 Pathfinder
2010 Pathfinder
AV
AUDIO UNIT
AV-25
< ECU DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
ABNIA1497GB
2010 Pathfinder
2010 Pathfinder
AV-26
< ECU DIAGNOSIS >
[BASE AUDIO]
AUDIO UNIT
ABNIA1498GB
2010 Pathfinder
2010 Pathfinder
AV
AUDIO UNIT
AV-27
< ECU DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
ABNIA1797GB
2010 Pathfinder
2010 Pathfinder
AV-28
< ECU DIAGNOSIS >
[BASE AUDIO]
AUDIO UNIT
ABNIA1624GB
2010 Pathfinder
2010 Pathfinder
AV
AUDIO SYSTEM
AV-29
< SYMPTOM DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
SYMPTOM DIAGNOSIS
AUDIO SYSTEM
AUDIO UNIT
AUDIO UNIT : Symptom Table
INFOID:0000000005259259
Symptom
Possible cause
Reference page
Inoperative
• Audio unit power circuit
• Audio unit
•
•
All speakers do not sound
• Audio unit power circuit
• Audio unit
•
•
One or several speakers do not sound
• Front door speaker
• Front tweeter
• Rear door speaker
•
•
•
2010 Pathfinder
2010 Pathfinder
AV-30
< SYMPTOM DIAGNOSIS >
[BASE AUDIO]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
Description
INFOID:0000000005259260
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
2010 Pathfinder
2010 Pathfinder
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