Nissan Pathfinder (2012 year). Manual — part 45
AV-178
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
Description
INFOID:0000000007347749
In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.
Diagnosis Procedure
INFOID:0000000007347750
Regarding Wiring Diagram information, refer to
AV-225, "Wiring Diagram - Without Navigation System"
1.
CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M45.
3. Check continuity between display unit harness connector M93
(A) terminal 8 and AV control unit harness connector M45 (B)
terminal 45.
4. Check continuity between display unit harness connector M93
(A) terminal 8 and ground.
Are continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M45.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 8 and ground.
Are voltage readings as specified?
YES
>> Replace AV control unit. Refer to
AV-255, "Removal and Installation"
.
NO
>> Replace display unit. Refer to
AV-257, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
8
M45
45
Yes
A
—
Continuity
Connector
Terminal
M93
8
Ground
No
ALNIA0394GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
8
Ground
Receive
audio sig-
nal
ALNIA0396GB
SKIB3601E
August 2012
2012 Pathfinder
AV
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
AV-179
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
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J
K
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M
B
A
O
P
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
Description
INFOID:0000000007347751
In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.
Diagnosis Procedure
INFOID:0000000007347752
Regarding Wiring Diagram information, refer to
AV-225, "Wiring Diagram - Without Navigation System"
1.
CHECK CONTINUITY VERTICAL SINCHRONIZING (VP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M45.
3. Check continuity between display unit harness connector M93
(A) terminal 20 and AV control unit harness connector M45 (B)
terminal 57.
4. Check continuity between display unit harness connector M93
(A) terminal 20 and ground.
Are continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK VERTICAL SINCHRONIZING (VP) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M45.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 20 and ground.
Are voltage readings as specified?
YES
>> Replace AV control unit. Refer to
AV-255, "Removal and Installation"
.
NO
>> Replace display unit. Refer to
AV-257, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
20
M45
57
Yes
A
—
Continuity
Connector
Terminal
M93
20
Ground
No
ALNIA0392GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
20
Ground
Receive
audio sig-
nal
ALNIA0393GB
SKIB3598E
August 2012
2012 Pathfinder
AV-180
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
FRONT DOOR SPEAKER
FRONT DOOR SPEAKER
Description
INFOID:0000000007347753
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 front door speakers using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000007347754
Regarding Wiring Diagram information, refer to
AV-225, "Wiring Diagram - Without Navigation System"
1.
CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and speaker connectors for the following:
• Proper connection
• Damage
• Disconnected or loose terminals
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connector B75 and suspect
speaker connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor B75 (A) and suspect speaker harness connector (B).
3. Check continuity between BOSE speaker amp. harness connec-
tor B75 (A) and ground.
Are continuity test results as specified?
YES
>> GO TO 3
NO
>> Repair harness or connector.
3.
FRONT SPEAKER SIGNAL CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
B75
13
D12
1
Yes
14
2
15
D112
1
16
2
A
—
Continuity
Connector
Terminal
B75
13
Ground
No
14
15
16
ALNIA0530GB
August 2012
2012 Pathfinder
AV
FRONT DOOR SPEAKER
AV-181
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
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B
A
O
P
1. Connect BOSE speaker amp. connector B75 and suspect
speaker connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tor B75 terminals with CONSULT or oscilloscope.
Is audio signal voltage as specified?
YES
>> Replace suspect speaker. Refer to
.
NO
>> GO TO 4
4.
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 continuity test results as specified?
YES
>> GO TO 5
NO
>> Repair harness or connector.
5.
FRONT SPEAKER SIGNAL CHECK
Connec-
tor
Terminal
Condition
Reference
signal
(+)
(-)
B75
13
14
Receive
audio sig-
nal
15
16
ALNIA0531GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M69
113
B75
30
Yes
119
29
109
28
115
27
A
—
Continuity
Connector
Terminal
M69
113
Ground
No
119
109
115
ALNIA0532GB
August 2012
2012 Pathfinder
AV-182
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
FRONT DOOR SPEAKER
1. Connect AV control unit connector and BOSE speaker amp.
connector.
2. Turn ignition switch ACC.
3. Push “POWER” switch.
4. Check the signal between AV control unit harness connector
M69 terminals with CONSULT or oscilloscope.
Are the audio signal voltage readings as specified?
YES
>> Replace BOSE speaker amp. Refer to
.
NO
>> Replace AV control unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M69
113
119
Receive
audio sig-
nal
109
115
ALNIA0878GB
SKIA0177E
August 2012
2012 Pathfinder
AV
FRONT TWEETER
AV-183
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
FRONT TWEETER
Description
INFOID:0000000007347755
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 tweeters using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000007347756
Regarding Wiring Diagram information, refer to
AV-225, "Wiring Diagram - Without Navigation System"
1.
CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and speaker connectors for the following:
• Proper connection
• Damage
• Disconnected or loose terminals
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connector B75 and suspect
tweeter connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor B75 (A) and suspect tweeter harness connector (B).
3. Check continuity between BOSE speaker amp. harness connec-
tor B75 (A) and ground.
Are continuity results as specified?
YES
>> GO TO 3
NO
>> Repair harness or connector.
3.
FRONT TWEETER SIGNAL CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
B75
13
M109
1
Yes
14
2
15
M111
1
16
2
A
—
Continuity
Connector
Terminal
B75
13
Ground
No
14
15
16
ALNIA0530GB
August 2012
2012 Pathfinder
AV-184
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
FRONT TWEETER
1. Connect BOSE speaker amp. connector B75 and suspect
tweeter connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tor B75 terminals with CONSULT or oscilloscope.
Is audio signal voltage as specified?
YES
>> Replace suspect tweeter. Refer to
.
NO
>> GO TO 4
4.
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 continuity results as specified?
YES
>> GO TO 5
NO
>> Repair harness or connector.
5.
FRONT TWEETER SIGNAL CHECK
Connec-
tor
Terminal
Condition
Reference
signal
(+)
(-)
B75
13
14
Receive
audio sig-
nal
15
16
ALNIA0531GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M69
113
B75
30
Yes
119
29
109
28
115
27
A
—
Continuity
Connector
Terminal
M69
113
Ground
No
119
109
115
ALNIA0532GB
August 2012
2012 Pathfinder
AV
FRONT TWEETER
AV-185
< DTC/CIRCUIT 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 and BOSE speaker amp.
connector.
2. Turn ignition switch ACC.
3. Push “POWER” switch.
4. Check the signal between AV control unit harness connector
M69 terminals with CONSULT or oscilloscope.
Are the audio signal voltage readings as specified?
YES
>> Replace BOSE speaker amp. Refer to
.
NO
>> Replace AV control unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M69
113
119
Receive
audio sig-
nal
109
115
AWNIA0457ZZ
SKIA0177E
August 2012
2012 Pathfinder
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