Nissan Frontier D40. Manual — part 33
AV-124
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
REAR DOOR TWEETER
1.
Connect audio unit connector M66 and audio amp. connector
B159.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between audio unit harness connector M66
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage reading as specified?
YES
>> Replace audio amp. Refer to
NO
>> Replace audio unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M66
14
13
Receive
audio sig-
nal
16
15
AWNIA1804ZZ
SKIA0177E
AV
SUBWOOFER
AV-125
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
SUBWOOFER
Description
INFOID:0000000005274955
The audio unit sends audio signals to the audio amp. The audio amp. amplifies the audio signals before send-
ing them to the subwoofer using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000005274956
Regarding Wiring Diagram information, refer to
.
1.
SPEAKER HARNESS CHECK
1.
Disconnect audio amp. connector B158 and subwoofer connec-
tor B72.
2.
Check continuity between audio amp. harness connector B158
(A) and subwoofer harness connector B72 (B).
3.
Check continuity between audio amp. harness connector B158 (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.
SPEAKER SIGNAL CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
B158
2
B72
1
Yes
18
2
3
3
19
4
A
—
Continuity
Connector
Terminal
B158
2
Ground
No
18
3
19
AWNIA1806ZZ
AV-126
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
SUBWOOFER
1.
Connect audio amp. connector B158 and subwoofer connector
B72.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between audio amp. harness connector B158
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace subwoofer. Refer to
NO
>> GO TO 3
3.
PRE-AMP HARNESS CHECK
1.
Disconnect audio unit connector M66 and audio amp. connector
B159.
2.
Check continuity between audio unit harness connector M66 (A)
and audio amp. harness connector B159 (B).
3.
Check continuity between audio unit harness connector M66 (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.
PRE-AMP SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
B158
2
18
Receive au-
dio signal
3
19
ALNIA0732GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M66
13
B159
8
Yes
14
24
15
7
16
23
A
—
Continuity
Connector
Terminal
M66
13
Ground
No
14
15
16
ALNIA0729GB
AV
SUBWOOFER
AV-127
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1.
Connect audio unit connector M66 and audio amp. connector
B159.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between audio unit harness connector M66
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage reading as specified?
YES
>> Replace audio amp. Refer to
NO
>> Replace audio unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M66
14
13
Receive
audio sig-
nal
16
15
AWNIA1804ZZ
SKIA0177E
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