Nissan Frontier D40. Manual — part 4
AV-8
< FUNCTION DIAGNOSIS >
[BASE AUDIO]
AUDIO SYSTEM
Component Parts Location
INFOID:0000000005274859
Component Description
INFOID:0000000005274860
1.
Front tweeter (crew cab)
LH M109
RH M111
2.
Audio unit M43
3.
Front door speaker
LH D12
RH D112
4.
Rear door speaker (crew cab)
LH D207
RH D307
5.
Rear door speaker (king cab)
LH B76
RH B160
AWNIA1797ZZ
Part name
Description
Audio unit
Controls audio system functions
Front door speakers
• Outputs audio signal from audio unit
• Outputs high, mid and low range sounds
Front tweeters
• Outputs audio signal from audio unit
• Outputs high range sounds
Rear door speakers
• Outputs audio signal from audio unit
• Outputs high, mid and low range sounds
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-9
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure
INFOID:0000000005274861
Regarding Wiring Diagram information, refer to
1.
CHECK FUSES
Check that the following fuses of the audio unit are not 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 audio unit connector M43.
2.
Check voltage between the audio unit connector M43 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
Inspect audio unit case ground.
Does case ground pass inspection?
YES
>> Inspection end.
NO
>> Repair audio unit case ground.
Unit
Terminals
Signal name
Fuse No.
Audio unit
19
Battery power
29
7
Ignition switch ACC or ON
4
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M43
7
Ground
0V
Battery
voltage
Battery
voltage
19
Ground
Battery
voltage
Battery
voltage
Battery
voltage
ALNIA0674GB
AV-10
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
FRONT DOOR SPEAKER
FRONT DOOR SPEAKER
Description
INFOID:0000000005274862
The audio unit sends audio signals to the front door speakers using the front door speaker circuits.
Diagnosis Procedure
INFOID:0000000005274863
Regarding Wiring Diagram information, refer to
1.
HARNESS CHECK
1.
Disconnect audio unit connector M43 and suspect speaker con-
nector.
2.
Check continuity between audio unit harness connector M43 (A)
terminal and suspect speaker harness connector (B) terminal.
3.
Check continuity between audio unit harness connector M43 (A)
terminal and ground.
Are continuity results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
FRONT SPEAKER SIGNAL CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
M43
2
D12
1
Yes
3
2
11
D112
1
12
2
A
—
Continuity
Connector
Terminal
M43
2
Ground
No
3
11
12
AWNIA0031ZZ
AV
FRONT DOOR SPEAKER
AV-11
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1.
Connect audio unit connector M43 and front speaker connector.
2.
Turn ignition switch to ACC.
3.
Push “POWER” switch.
4.
Check the signal between audio unit harness connector M43
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace speaker. Refer to
.
NO
>> Replace audio unit. Refer to
(+)
(-)
Condition
Reference signal
Con-
nector
Terminal
Terminal
M43
2
3
Receive
audio sig-
nal
11
12
AWNIA0032ZZ
SKIA0177E
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