Nissan Pathfinder (2005 year). Instruction — part 69
AUDIO
AV-27
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AV
2005 Pathfinder
21 (W)
5 (G)
Subwoofer
Output
ON
Receive audio
signal
No sound from
subwoofer.
22 (Y)
Ground
Subwoofer ON
signal
Output
ON
–
More than 6.5V
Subwoofer does
not work properly.
24 (L)
23 (B/W)
Audio sound
signal rear RH
Input
ON
Receive audio
signal
No sound from
rear door speaker
RH or rear door
tweeter RH.
26 (BR)
25 (B/R)
Audio sound
signal rear LH
Input
ON
Receive audio
signal
No sound from
rear door speaker
LH or rear door
tweeter LH.
28 (Y)
27 (BR)
Audio sound
signal front RH
Input
ON
Receive audio
signal
No sound from
front door speaker
RH or front tweeter
RH.
30 (W)
29 (B)
Audio sound
signal front LH
Input
ON
Receive audio
signal
No sound from
front door speaker
LH or front tweeter
LH.
31 (G)
Ground
Amp. ON sig-
nal
Input
ON
–
More than 6.5V
System does not
work properly.
Terminal
(wire color)
Item
Signal
input/
output
Condition
Reference value
(Approx.)
Example of
symptom
+
–
Ignition
switch
Operation
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
AV-28
AUDIO
2005 Pathfinder
Terminals and Reference Value for AV Switch
EKS009U6
Terminal No.
(Wire color)
Item
Signal
input/
output
Condition
Voltage
(Approx.)
Example of
symptom
+
–
Ignition
switch
Operation
1 (Y)
Ground
Battery
power
Input
–
–
Battery voltage
System does not
work properly.
2 (G/B)
Ground
ACC power
Input
ACC
–
Battery voltage
System does not
work properly.
3 (R)
Ground
Illumination
signal
Input
OFF
Lighting switch is
ON (position 1).
Battery voltage
AV switch illumi-
nation does not
come on when
lighting switch is
ON (position 1).
Turn lighting switch
OFF.
Approx. 3.0V or less
4 (BR)
Ground
Illumination
control signal
Input
ON
Illumination control
switch is operated
by lighting switch in
1st position.
Changes between 0 and 12V.
AV switch illumi-
nation cannot be
controlled.
5 (B)
Ground
Ground
–
ON
–
0V
–
6 (V)
Ground
Communica-
tion signal (+)
Input/
output
ON
–
System does not
work properly.
7
–
Shield
ground
–
–
–
–
–
8 (LG)
Ground
Communica-
tion signal (-)
Input/
output
ON
–
System does not
work properly.
12 (R)
Ground
Remote con-
trol A
Input
ON
Press MODE switch
0V
Steering wheel
audio controls
do not function.
Press SEEK UP
switch
0.75V
Press VOL UP
switch
2V
Except for above
5V
13 (GR)
Ground
Remote con-
trol B
Input
ON
Press POWER
switch
0V
Steering wheel
audio controls
do not function.
Press SEEK DOWN
switch
0.75V
Press VOL DOWN
switch
2V
Except for above
5V
14 (L)
–
Remote con-
trol ground
–
–
–
–
Steering wheel
audio controls
do not function.
SKIA0175E
SKIA0176E
AUDIO
AV-29
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AV
2005 Pathfinder
AV Switch Self-Diagnosis Function
EKS009U7
It can check ON/OFF operation of each switch in the AV switch (with NAVI) or audio unit (without NAVI) and
diagnose the input signals from the steering switch.
STARTING THE SELF-DIAGNOSIS MODE (BOSE SYSTEM WITHOUT NAVI)
1.
Turn ignition switch from OFF to ACC.
2.
Press and hold the “CLOCK” switch and turn the volume control dial clockwise or counterclockwise for 30
clicks or more.
Then the self-diagnosis operates. A single beep indicates self-diagnosis mode is active.
3.
Initially, all display segments will be illuminated.
4.
Press each switch. When each switch is pressed, its name and communication code will be displayed.
NOTE:
CD player LOAD and EJECT buttons are not included in this test and will not change the display when
pressed.
STARTING THE SELF-DIAGNOSIS MODE (BOSE SYSTEM WITH NAVI)
1.
Turn ignition switch from OFF to ACC.
2.
Within 10 seconds press and hold the switches “PAUSE/MUTE”
and “PREV” simultaneously for 3 seconds.
Then the self-diagnosis operates. A single beep indicates self-
diagnosis mode is active.
3.
Press each switch and listen for beep.
NOTE:
CD player LOAD and EJECT buttons are not included in this test
and will not beep when pressed.
WKIA3226E
WKIA3227E
AV-30
AUDIO
2005 Pathfinder
EXITING THE SELF-DIAGNOSIS MODE
Turn ignition switch OFF. Then the self-diagnosis ends.
DIAGNOSIS FUNCTION
●
It can check for continuity of the switches by sounding the beep when each AV switch and steering switch
is pressed.
●
It can check for continuity of harness between AV switch and steering switch.
AUDIO
AV-31
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AV
2005 Pathfinder
Trouble Diagnosis
EKS009U8
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.
MALFUNCTION WITH RADIO AND CD (BASE AND MID LEVEL SYSTEM)
MALFUNCTION WITH RADIO AND CD (BOSE SYSTEM)
Before proceeding on models with NAVI, confirm that other AV switch functions (except audio functions) oper-
ate. If not, refer to
AV-153, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)"
.
Symptom
Possible cause
Inoperative
●
Audio unit power circuit check. Refer to
.
If above check is OK, replace audio unit.
Steering switch does not operate (with mid level
audio system)
●
Steering switch check. Refer to
AV-35, "Steering Switch Check (With NAVI)"
.
If above check is OK, replace audio unit.
All speakers do not sound
●
Audio unit
One or several speakers do not sound
●
Front door speaker check. Refer to
AV-38, "Sound Is Not Heard From Front
Door Speaker or Front Tweeter (Base and Mid Level System)"
.
●
Rear door speaker check. Refer to
AV-40, "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter (Base and Mid Level System)"
.
Poor sound
●
Audio unit
●
Speaker
Noisy
●
Audio unit
●
Electrical equipment (generator, bonding wire, etc.)
Symptom
Possible cause
Inoperative
●
Audio unit power circuit check. Refer to
.
●
Audio communication line check (with Navigation System). Refer to
"Audio Communication Line Check (Between Display Control Unit and
Audio Unit)"
.
●
AV switch check. Refer to
AV-37, "AV Switch Check (With NAVI)"
.
If above check is OK, replace audio unit.
Steering switch does not operate
●
Steering switch check. Refer to
AV-35, "Steering Switch Check (With NAVI)"
.
●
AV switch check. Refer to
AV-37, "AV Switch Check (With NAVI)"
.
●
Audio communication line check (with Navigation System). Refer to
"Audio Communication Line Check (Between Display Control Unit and
Audio Unit)"
.
If above check is OK, replace audio unit.
Audio information is not displayed on screen (with
NAVI)
●
Display unit check. Refer to
AV-109, "Self-Diagnosis Mode (DCU)"
.
All speakers do not sound
●
Audio unit
●
BOSE speaker amp. power supply and ground circuit check. Refer to
"Power Supply Circuit Inspection"
.
●
BOSE speaker amp. ON signal
●
BOSE speaker amp.
One or several speakers do not sound
●
Front door speaker check. Refer to
AV-42, "Sound Is Not Heard From Front
Door Speaker or Front Tweeter (BOSE System)"
.
●
Rear door speaker check. Refer to
AV-46, "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter (BOSE System)"
.
●
Subwoofer check. Refer to
AV-49, "Sound Is Not Heard From Subwoofer
.
AV-32
AUDIO
2005 Pathfinder
FOR RADIO ONLY
NOTE:
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.
FOR CD ONLY
Noise Inspection
EKS009U9
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
Poor sound
●
Audio unit
●
BOSE speaker amp.
●
Speaker
Noisy
●
Audio unit
●
BOSE speaker amp.
●
Electrical equipment (generator, bonding wire, etc.)
Symptom
Possible cause
Symptom
Possible cause
No sound
●
Audio unit
●
Antenna feeder, wiring or connections
●
Antenna amplifier, power supply, wiring or connections
Noisy
●
Audio unit
●
Audio unit case ground
●
Antenna feeder, wiring or connections
●
Antenna amplifier, power supply, wiring or connections
●
Noise prevention parts
●
Electrical equipment
●
Wire harness of each piece of electrical equipment
All radio stations stored in memory are deleted
●
Audio unit power circuit. Refer to
.
●
Audio unit
Symptom
Possible cause
CD cannot be inserted.
●
CD
●
Audio unit
CD cannot be ejected.
The CD cannot be played.
The sound skips, stops suddenly, or is distorted.
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
AUDIO
AV-33
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AV
2005 Pathfinder
Power Supply Circuit Inspection
EKS009UA
1.
CHECK FUSES
Check that the following fuses are not blown.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to
"POWER SUPPLY ROUTING CIRCUIT"
.
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
operation 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 amplifier or
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
Occurrence condition
Possible cause
Unit
Terminals
Signal name
Fuse No.
Audio unit
6
Battery power
29
10
Ignition switch ACC or ON
4
AV switch
1
Battery power
29
2
Ignition switch ACC or ON
4
BOSE speaker amp. (with BOSE)
1
Battery power
29
Display control unit
12
Ignition switch ON or START
12
Subwoofer (BOSE system)
6
Battery power
17
AV-34
AUDIO
2005 Pathfinder
2.
POWER SUPPLY CIRCUIT CHECK
1.
Disconnect audio unit connector M43, subwoofer connector B72 (with BOSE) and BOSE speaker amp.
connector B74 (with BOSE).
2.
Check voltage between the audio unit and ground.
3.
Check voltage between subwoofer (BOSE system) and ground.
4.
Check voltage between BOSE speaker amp. (with BOSE) and ground.
OK or NG
OK
>> GO TO 3.
NG
>>
●
Check connector housings for disconnected or loose
terminals.
●
Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Check continuity between subwoofer (BOSE system) harness con-
nector B72 terminal 5 and BOSE speaker amp. (with BOSE) harness
connector B74 terminal 17 and ground.
OK or NG
OK
>> Inspection End.
NG
>>
●
Check connector housings for disconnected or loose
terminals.
●
Repair harness or connector.
Unit
Terminal No.
OFF
ACC
ON
(+)
(-)
Connector
Terminal
Audio unit
M43
6
Ground
Battery
voltage
Battery
voltage
Battery
voltage
10
Ground
0V
Battery
voltage
Battery
voltage
WKIA3228E
Unit
Terminal No.
OFF
ACC
ON
(+)
(-)
Connector
Terminal
Sub-
woofer
B72
6
Ground
Battery
voltage
Battery
voltage
Battery
voltage
WKIA3229E
Unit
Terminal No.
OFF
ACC
ON
(+)
(-)
Connector
Terminal
BOSE
speaker
amp.
B74
1
Ground
Battery
voltage
Battery
voltage
Battery
voltage
WKIA3230E
Continuity should exist.
WKIA3231E
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