Nissan Frontier D40. Manual — part 32
AV-120
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
REAR DOOR SPEAKER
1.
Connect audio amp. connectors and suspect speaker connec-
tor.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between audio amp. harness connectors B159
terminals with CONSULT-III or oscilloscope.
Are audio signal voltage readings as specified?
YES
>> Replace suspect speaker. 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
(+)
(-)
B159
11
27
Receive
audio sig-
nal
12
28
ALNIA0727GB
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
REAR DOOR SPEAKER
AV-121
< 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
AV-122
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
REAR DOOR TWEETER
REAR DOOR TWEETER
Description
INFOID:0000000005274953
The audio unit sends audio signals to the audio amp. The audio amp. amplifies the audio signals before send-
ing them to the rear door tweeters using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000005274954
Regarding Wiring Diagram information, refer to
.
1.
SPEAKER HARNESS CHECK
1.
Disconnect audio amp. connectors B159 and suspect speaker
connector.
2.
Check continuity between audio amp. harness connectors B159
(A) and suspect speaker harness connector (B).
3.
Check continuity between audio amp. harness connectors B159
(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
B159
11
D208
1
Yes
27
2
12
D308
1
28
2
Connector
Terminal
-
Continuity
B159
11
Ground
No
27
12
28
ALNIA0726GB
AV
REAR DOOR TWEETER
AV-123
< COMPONENT DIAGNOSIS >
[PREMIUM AUDIO (CREW CAB)]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1.
Connect audio amp. connectors and suspect speaker connec-
tor.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between audio amp. harness connectors B159
terminals with CONSULT-III or oscilloscope.
Are audio signal voltage readings as specified?
YES
>> Replace suspect speaker. 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
(+)
(-)
B159
11
27
Receive
audio sig-
nal
12
28
ALNIA0727GB
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
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