Nissan Pathfinder (2009 year). Manual — part 51
AV-220
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
REAR TWEETER
REAR TWEETER
Description
INFOID:0000000003939112
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the
audio signals before sending them to the rear tweeters using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000003939113
1.
HARNESS CHECK
1.
Disconnect BOSE speaker amp. connectors B75 and suspect
tweeter connector.
2.
Check continuity between BOSE speaker amp. harness connec-
tors B75 (A) and suspect tweeter harness connector (B).
3.
Check continuity between BOSE speaker amp. harness connec-
tors B75 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
REAR TWEETER SIGNAL CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
B75
9
D208
1
Yes
10
2
11
D308
1
12
2
Connector
Terminal
-
Continuity
B75
9
Ground
No
10
11
12
ALNIA0533GB
2009 Pathfinder
AV
REAR TWEETER
AV-221
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1.
Connect BOSE speaker amp. connectors and suspect tweeter
connector.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between BOSE speaker amp. harness connec-
tors B75 terminals with CONSULT-III or oscilloscope.
Are audio signal voltage readings as specified?
YES
>> Replace suspect tweeter. Refer to
.
NO
>> GO TO 3
3.
HARNESS CHECK
1.
Disconnect AV control unit connector M69 and BOSE speaker
amp. connector B75.
2.
Check continuity between AV control unit harness connector
M69 (A) and BOSE speaker amp. harness connector B75 (B).
3.
Check continuity between AV control unit harness connector
M69 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 4
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
4.
REAR TWEETER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
B75
9
10
Receive
audio sig-
nal
11
12
ALNIA0534GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M69
112
B75
26
Yes
118
25
108
24
114
23
A
—
Continuity
Connector
Terminal
M69
112
Ground
No
118
108
114
ALNIA0535GB
2009 Pathfinder
AV-222
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
REAR TWEETER
1.
Connect AV control unit connector M69 and BOSE speaker
amp. connector B75.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between AV control unit harness connector
M69 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage reading as specified?
YES
>> Replace BOSE speaker amp. Refer to
.
NO
>> Replace AV control unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M69
112
118
Receive
audio sig-
nal
108
114
ALNIA0356GB
SKIA0177E
2009 Pathfinder
AV
SUBWOOFER
AV-223
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
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A
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SUBWOOFER
Description
INFOID:0000000003939114
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the
audio signals before sending them to the subwoofer using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000003939115
1.
VERIFY SUBWOOFER POWER AND GROUND SUPPLY
Check power and ground supply to the subwoofer. Refer to
AV-196, "SUBWOOFER : Diagnosis Procedure"
Did the power and ground supply check OK?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
HARNESS CHECK
1.
Disconnect BOSE speaker amp. connectors and subwoofer
connector.
2.
Check continuity between BOSE speaker amp. harness connec-
tors B74 (A) and B75 (B) and subwoofer harness connector B72
(C).
3.
Check continuity between BOSE speaker amp. harness connec-
tor B74 (A) and B75 (B) and ground.
Are the continuity results as specified?
YES
>> GO TO 3
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
SUBWOOFER AMP ON SIGNAL CHECK
1.
Connect BOSE speaker amp. connector B74.
2.
Turn ignition switch to ACC.
3.
Push "POWER" switch.
4.
Check voltage between subwoofer connector B72 terminal 4
and ground.
Are the voltage readings as specified?
YES
>> GO TO 4
NO
>> Replace BOSE speaker amp. Refer to
AV-297, "Removal and Installation"
.
Connector
Terminal
Connector
Terminal
Continuity
A: B74
3
C: B72
1
Yes
19
2
B: B75
22
4
Connector
Terminal
-
Continuity
A: B74
3
Ground
No
19
B: B75
22
ALNIA0536GB
(+)
(-)
Voltage
Connector
Terminal
B72
4
Ground
Battery voltage
ALNIA0540GB
2009 Pathfinder
AV-224
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
SUBWOOFER
4.
SUBWOOFER AUDIO SIGNAL CHECK
1.
Connect BOSE speaker amp. connectors and subwoofer connector.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between BOSE speaker amp. harness connec-
tor B74 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace subwoofer. Refer to
AV-298, "Removal and Installation"
NO
>> GO TO 5
5.
HARNESS CHECK
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector M69 and BOSE speaker
amp. connector B75.
3.
Check continuity between AV control unit harness connector
M69 (A) and BOSE speaker amp. harness connector B75 (B).
4.
Check continuity between AV control unit harness connector
M69 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 6
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
6.
BACK DOOR SPEAKER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
B74
19
3
Receive au-
dio signal
ALNIA0879GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M69
112
B75
26
Yes
118
25
108
24
114
23
A
—
Continuity
Connector
Terminal
M69
112
Ground
No
118
108
114
ALNIA0538GB
2009 Pathfinder
AV
SUBWOOFER
AV-225
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1.
Connect AV control unit connector M69 and BOSE speaker
amp. connector B75.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between AV control unit harness connector
M69 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage reading as specified?
YES
>> Replace BOSE speaker amp. Refer to
.
NO
>> Replace AV control unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M69
112
118
Receive
audio sig-
nal
108
114
ALNIA0356GB
SKIA0177E
2009 Pathfinder
AV-226
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
AMP ON SIGNAL CIRCUIT
AMP ON SIGNAL CIRCUIT
Description
INFOID:0000000003939116
When the audio system is turned on, a voltage signal is supplied from the AV control unit to the BOSE speaker
amp. When this signal is received, the BOSE speaker amp. will turn on.
Diagnosis Procedure
INFOID:0000000003939117
1.
CHECK AMP ON SIGNAL (BOSE SPEAKER AMP)
1.
Turn audio system ON.
2.
Check voltage between BOSE speaker amp. harness connector
B75 terminal 31 and ground.
Is battery voltage present?
YES
>> Inspection End.
NO
>> GO TO 2
2.
CHECK AMP ON SIGNAL (AV CONTROL UNIT)
Check voltage between AV control unit harness connector M69 ter-
minal 110 and ground.
Is battery voltage present?
YES
>> Repair harness or connector.
NO
>> Replace AV control unit. Refer to
(+)
(-)
Value (Approx.)
Connector
Terminal
B75
31
Ground
Battery Voltage
ALNIA0539GB
(+)
(-)
Value (Approx.)
Connector
Terminal
M69
110
Ground
Battery Voltage
ALNIA0370GB
2009 Pathfinder
AV
STEERING SWITCH
AV-227
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
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B
A
O
P
STEERING SWITCH
Description
INFOID:0000000003939118
When one of the steering wheel AV control switches is pushed, the resistance in the steering wheel AV control
switch circuit changes depending on which button is pushed.
Diagnosis Procedure
INFOID:0000000003939119
1.
CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
1.
Turn ignition switch OFF.
2.
Disconnect steering wheel audio control switch connector M102.
3.
Check resistance between steering switch connector terminals.
Do the steering wheel audio control switches check OK?
YES
>> GO TO 2
NO
>> Replace steering wheel audio control switch. Refer to
AV-293, "Removal and Installation"
.
2.
CHECK HARNESS
1.
Disconnect AV control unit connector M42 and spiral cable con-
nector M30.
2.
Check continuity between AV control unit harness connector
M42 (A) and spiral cable harness connector M30 (B).
3.
Check continuity between AV control unit connector M42 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 3
NO
>> Repair harness.
3.
SPIRAL CABLE CHECK
Terminal
Signal name
Condition
Resistance
(
Ω
)
(Approx.)
16
17
Seek (down)
Depress
switch.
165
Volume (down)
Depress VOL down switch.
487
Mode
Depress MODE switch.
0
20
17
Seek (up)
Depress
switch.
165
Volume (up)
Depress VOL up switch.
487
Power
Depress PWR switch.
0
WKIA4457E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M42
6
M30
24
Yes
15
31
16
32
A
—
Continuity
Connector
Terminal
M42
6
Ground
No
15
16
ALNIA0332GB
2009 Pathfinder
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