Infiniti QX56 (JA60). Manual — part 65
AV-68
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000005146301
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES
Check that the following AV control unit fuses are not blown.
Are the fuses OK?
YES
>> GO TO 2.
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1. Disconnect AV control unit connectors M42 and M45.
2. Check voltage between the AV control unit connectors M42 and
M45 and ground.
Are the voltage results as specified?
YES
>> GO TO 3.
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Unit
Terminals
Signal name
Fuse No.
AV control unit
19
Battery power
31
66
68
7
Ignition switch ACC or ON
4
69
79
Ignition switch ON or START
12
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M42
7
Ground
0V
Battery
voltage
Battery
voltage
19
Ground
Battery
voltage
Battery
voltage
Battery
voltage
M45
66
Ground
Battery
voltage
Battery
voltage
Battery
voltage
68
Ground
Battery
voltage
Battery
voltage
Battery
voltage
69
Ground
0V
Battery
voltage
Battery
voltage
79
Ground
0V
0V
Battery
voltage
AWNIA1554ZZ
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-69
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Ignition OFF.
2. Check continuity between AV control unit harness connectors
M42 and M45 and ground.
Are the continuity results as specified?
YES
>> Inspection End.
NO
>> Repair AV control unit ground.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000005146302
Regarding Wiring Diagram information, refer to
.
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch to ACC
2. Check voltage between display unit harness connector M93 and
ground.
Does specified voltage exist?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector.
3. Check continuity between display unit harness connector M93
and ground.
Does continuity exist?
YES
>> Inspection end.
Connector
(+)
(-)
Continuity
Terminal
M42
20
Ground
Yes
M45
65
67
86
87
AWNIA1555ZZ
Signal name
Connector
Terminal
Ignition switch
position
Value (Approx.)
B+
M93
2
ACC
Battery voltage
ACC
3
ALNIA0317GB
(+)
(-)
Continuity
Connector
Terminal
M93
1
Ground
Yes
13
ALNIA0407GB
AV-70
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
NO
>> Repair harness or connector.
A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Diagnosis Procedure
INFOID:0000000005146303
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
Check that the A/C and AV switch assembly fuse is not blown.
Is the fuse OK?
YES
>> GO TO 2.
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1. Disconnect A/C and AV switch assembly connector M98.
2. Check voltage between the A/C and AV switch assembly con-
nector M98 and ground.
Are the voltage results as specified?
YES
>> GO TO 3.
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
1. Ignition OFF.
2. Check continuity between A/C and AV switch assembly harness
connector M98 and ground.
Are the continuity results as specified?
YES
>> Inspection End.
NO
>> Repair A/C and AV switch assembly ground.
BOSE SPEAKER AMP
BOSE SPEAKER AMP : Diagnosis Procedure
INFOID:0000000005146304
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
Check that the BOSE speaker amp. fuse is not blown.
Unit
Terminal
Signal name
Fuse No.
A/C and AV switch assembly
2
Ignition switch ACC or ON
4
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M98
2
Ground
0V
Battery
voltage
Battery
voltage
ALNIA0315GB
(+)
(-)
Continuity
Connector
Terminal
M98
1
Ground
Yes
ALNIA0316GB
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-71
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Are the fuses OK?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE speaker amp. connector.
3. Check voltage between BOSE speaker amp. harness connector
M112 terminal 11 and ground.
Is battery voltage present?
YES
>> GO TO 3.
NO
>> Check harness between BOSE speaker amp. and fuse.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE speaker amp. connector.
3. Check continuity between BOSE speaker amp. harness connec-
tor M112 terminal 12 and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
WOOFER
WOOFER : Diagnosis Procedure
INFOID:0000000005146305
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
Check that the subwoofer fuse is not blown.
Is the fuse OK?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Unit
Terminal
Signal name
Fuse No.
BOSE speaker amp.
11
Battery power
31
(+)
(-)
Voltage (approx.)
Connector
Terminal
M112
11
Ground
Battery voltage
ALNIA0339GB
(+)
(-)
Continuity
Connector
Terminal
M112
12
Ground
Yes
ALNIA0340GB
Unit
Terminal
Signal name
Fuse No.
Subwoofer
6
Battery power
17
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