Infiniti QX56 (JA60). Manual — part 71
![](/vehicles/zatt/vend/genn/jithe.png)
AV-92
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
CENTER SPEAKER
YES
>> Replace center speaker. Refer to
AV-173, "Removal and Installation"
.
NO
>> GO TO 3.
3.
HARNESS CHECK
1. Disconnect AV control unit connector M42 and BOSE speaker
amp. connector M113.
2. Check continuity between AV control unit harness connector
M42 (A) and BOSE speaker amp. harness connector M113 (B).
3. Check continuity between AV control unit harness connector
M42 (A) and ground.
Are continuity test results as specified?
YES
>> GO TO 4.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
4.
FRONT SPEAKER SIGNAL CHECK
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
M42 terminals with CONSULT-III or oscilloscope.
Are the audio signal voltage readings as specified?
YES
>> Replace BOSE speaker amp. Refer to
.
NO
>> Replace AV control unit. Refer to
A
B
Continuity
Connector
Terminal
Connector
Terminal
M42
2
M113
18
Yes
3
32
11
19
12
20
A
—
Continuity
Connector
Terminal
M42
2
Ground
No
3
11
12
ALNIA0416GB
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M42
2
3
Receive
audio sig-
nal
11
12
ALNIA0417GB
SKIA0177E
![](/vehicles/zatt/vend/genn/ioler.png)
AV
REAR DOOR SPEAKER
AV-93
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
REAR DOOR SPEAKER
Description
INFOID:0000000005146331
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 door speakers using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000005146332
Regarding Wiring Diagram information, refer to
.
1.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connectors M112 and suspect
speaker connector.
2. Check continuity between BOSE speaker amp. harness connec-
tors M112 (A) and suspect speaker harness connector (B).
3. Check continuity between BOSE speaker amp. harness connec-
tors M112 (A) and ground.
Are the continuity test results as specified?
YES
>> GO TO 2.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
REAR DOOR SPEAKER SIGNAL CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
M112
1
D207
1
Yes
10
2
2
D307
1
3
2
A
—
Continuity
Connector
Terminal
M112
1
Ground
No
10
2
3
ALNIA0352GB
![](/vehicles/zatt/vend/genn/yowene.png)
AV-94
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
REAR DOOR SPEAKER
1. Connect BOSE speaker amp. connectors and suspect speaker
connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tors M112 terminals with CONSULT-III or oscilloscope.
Are audio signal voltage readings as specified?
YES
>> Replace suspect speaker. Refer to
.
NO
>> GO TO 3.
3.
HARNESS CHECK
1. Disconnect AV control unit connector M42 and BOSE speaker
amp. connector M113.
2. Check continuity between AV control unit harness connector
M42 (A) and BOSE speaker amp. harness connector M113 (B).
3. Check continuity between AV control unit harness connector
M42 (A) and ground.
Are the continuity test results as specified?
YES
>> GO TO 4.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
4.
REAR DOOR SPEAKER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M112
1
10
Receive
audio sig-
nal
2
3
ALNIA0843GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M42
4
M113
21
Yes
5
22
13
23
14
33
A
—
Continuity
Connector
Terminal
M42
4
Ground
No
5
13
14
ALNIA0418GB
![](/vehicles/zatt/vend/genn/pel.png)
AV
REAR DOOR SPEAKER
AV-95
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Connect AV control unit connector M42 and BOSE speaker
amp. connector M113.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between AV control unit harness connector
M42 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
(+)
(-)
M42
4
5
Receive
audio sig-
nal
13
14
ALNIA0419GB
SKIA0177E
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