Infiniti QX56 (JA60). Manual — part 74
AV-104
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
SUBWOOFER
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 6.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
6.
REAR DOOR SPEAKER SIGNAL CHECK
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
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
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M42
4
5
Receive
audio sig-
nal
13
14
ALNIA0419GB
SKIA0177E
AV
AMP ON SIGNAL CIRCUIT
AV-105
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
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M
B
A
O
P
AMP ON SIGNAL CIRCUIT
Description
INFOID:0000000005146339
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:0000000005146340
Regarding Wiring Diagram information, refer to
.
1.
CHECK AMP ON SIGNAL (BOSE SPEAKER AMP)
1. Turn audio system ON.
2. Check voltage between BOSE speaker amp. harness connector
M113 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 M42 ter-
minal 1 and ground.
Is battery voltage present?
YES
>> Repair harness or connector.
NO
>> Replace AV control unit. Refer to
31 - Ground
: Battery voltage
ALNIA0369GB
1 - Ground
: Battery voltage
ALNIA0420GB
AV-106
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
STEERING SWITCH
STEERING SWITCH
Description
INFOID:0000000005146341
When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio
control switch circuit changes depending on which button is pushed.
Diagnosis Procedure
INFOID:0000000005146342
Regarding Wiring Diagram information, refer to
.
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-179, "Removal and Installation"
2.
CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector M42 and spiral cable con-
nector M30.
3. Check continuity between AV control unit harness connector
M42 (A) and spiral cable harness connector M30 (B).
4. Check continuity between AV control unit connector M42 (A) and ground.
Terminal
Signal name
Condition
Resistance
(
Ω)
(Approx.)
16
17
Seek (down)
Depress
switch.
165
Volume (down)
Depress VOL down switch.
487
Phone/Send
Depress
switch.
0
20
17
Seek (up)
Depress
switch.
165
Volume (up)
Depress VOL up switch.
487
Mode/End
Depress
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
AV
STEERING SWITCH
AV-107
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
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M
B
A
O
P
Are the continuity results as specified?
YES
>> GO TO 3.
NO
>> Repair harness.
3.
SPIRAL CABLE CHECK
1. Disconnect spiral cable connector M102.
2. Check continuity between spiral cable harness connector M30
(A) and M102 (B).
Does the spiral cable check OK?
YES
>> Inspection End.
NO
>> Replace spiral cable. Refer to
SR-7, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M30
24
M102
20
Yes
31
17
32
16
AWLIA1602ZZ
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