Nissan Pathfinder (2008 year). Manual — part 30
AV-80
< COMPONENT DIAGNOSIS >
[MID AUDIO]
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
Description
INFOID:0000000001450814
In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.
Diagnosis Procedure
INFOID:0000000001450815
1.
CHECK CONTINUITY VERTICAL SINCHRONIZING (VP) SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector M93 and AV control unit con-
nector M45.
3.
Check continuity between display unit harness connector M93
(A) terminal 20 and AV control unit harness connector M45 (B)
terminal 57.
4.
Check continuity between display unit harness connector M93
(A) terminal 20 and ground.
Are continuity results as specified?
YES
>> GO TO 2
NO
>> Repair harness or connector.
2.
CHECK VERTICAL SINCHRONIZING (VP) SIGNAL
1.
Connect display unit connector M93 and AV control unit connec-
tor M45.
2.
Turn ignition switch ON.
3.
Check signal between display unit harness connector M93 ter-
minal 20 and ground.
Are voltage readings as specified?
YES
>> Replace AV control unit. Refer to
AV-134, "Removal and Installation"
.
NO
>> Replace display unit. Refer to
AV-136, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
20
M45
57
Yes
A
—
Continuity
Connector
Terminal
M93
20
Ground
No
ALNIA0392GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
20
Ground
Receive
audio sig-
nal
ALNIA0393GB
SKIB3598E
AV
FRONT DOOR SPEAKER
AV-81
< COMPONENT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
FRONT DOOR SPEAKER
Description
INFOID:0000000001450816
The AV control unit sends audio signals to the front door speakers using the front door speaker circuits.
Diagnosis Procedure
INFOID:0000000001450817
1.
HARNESS CHECK
1.
Disconnect AV control unit connector M42 and suspect speaker
connector.
2.
Check continuity between AV control unit harness connector
M42 (A) terminal and suspect speaker harness connector (B)
terminal.
3.
Check continuity between AV control unit harness connector
M42 (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
M42
2
D12
1
Yes
3
2
11
D112
1
12
2
A
—
Continuity
Connector
Terminal
M42
2
Ground
No
3
11
12
AWNIA0031ZZ
AV-82
< COMPONENT DIAGNOSIS >
[MID AUDIO]
FRONT DOOR SPEAKER
1.
Connect AV control unit connector M42 and front speaker con-
nector.
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 as specified?
YES
>> Replace speaker. Refer to
.
NO
>> Replace AV control unit. Refer to
(+)
(-)
Condi-
tion
Reference signal
Con-
nec-
tor
Termi-
nal
Con-
nec-
tor
Termi-
nal
M42
2
M42
3
Receive
audio
signal
11
12
AWNIA0032ZZ
SKIA0177E
AV
FRONT TWEETER
AV-83
< COMPONENT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
FRONT TWEETER
Description
INFOID:0000000001450818
The AV control unit sends audio signals to the front tweeters using the front tweeter circuits.
Diagnosis Procedure
INFOID:0000000001450819
1.
HARNESS CHECK
1.
Disconnect AV control unit connector M42 and suspect front
tweeter connector.
2.
Check continuity between AV control unit harness connector
M42 (A) and suspect front tweeter harness connector (B).
3.
Check continuity between AV control unit harness connector
M42 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
FRONT TWEETER SIGNAL CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
M42
2
M109
1
Yes
3
2
11
M111
1
12
2
A
—
Continuity
Connector
Terminal
M42
2
Ground
No
3
11
12
AWNIA0031ZZ
AV-84
< COMPONENT DIAGNOSIS >
[MID AUDIO]
FRONT TWEETER
1.
Connect AV control unit connector M42 and front tweeter con-
nector.
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 as specified?
YES
>> Replace the suspect front tweeter. Refer to
.
NO
>> Replace AV control unit. Refer to
(+)
(-)
Condi-
tion
Reference signal
Con-
nec-
tor
Termi-
nal
Con-
nec-
tor
Termi-
nal
M42
2
M42
3
Receive
audio
signal
11
12
AWNIA0032ZZ
SKIA0177E
AV
REAR DOOR SPEAKER
AV-85
< COMPONENT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
REAR DOOR SPEAKER
Description
INFOID:0000000001450820
The AV control unit sends audio signals to the rear speakers using the rear speaker circuits.
Diagnosis Procedure
INFOID:0000000001450821
1.
HARNESS CHECK
1.
Disconnect AV control unit connector M42 and suspect rear
speaker connector.
2.
Check continuity between AV control unit harness connector
M42 (A) and suspect rear speaker harness connector (B).
3.
Check continuity between AV control unit harness connector
M42 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
REAR SPEAKER SIGNAL CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
M42
4
D207
1
Yes
5
2
13
D307
1
14
2
A
—
Continuity
Connector
Terminal
M42
4
Ground
No
5
13
14
AWNIA0033ZZ
AV-86
< COMPONENT DIAGNOSIS >
[MID AUDIO]
REAR DOOR SPEAKER
1.
Connect AV control unit connector and rear speaker connector.
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 as specified?
YES
>> Replace the suspect rear door speaker. Refer to
139, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
Terminals
Condi-
tion
Reference
signal
(+)
(-)
Con-
nector
Termi-
nal
Con-
nector
Terminal
M42
4
M42
5
Receive
audio
signal
13
14
AWNIA0034ZZ
SKIA0177E
AV
STEERING SWITCH
AV-87
< COMPONENT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
STEERING SWITCH
Description
INFOID:0000000001450824
When one of the steering wheel AV control switches is pushed, the resistance in the steering wheel AV control
switch circuit changes depending on which button is pushed.
Diagnosis Procedure
INFOID:0000000001450825
1.
CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
1.
Disconnect steering wheel audio control switch connector M102.
2.
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-140, "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.
Are the continuity results as specified?
YES
>> GO TO 3
NO
>> Repair harness.
3.
SPIRAL CABLE CHECK
Terminal
Signal name
Condition
Resistance
(
Ω
)
(Approx.)
16
17
Seek (down)
Depress
switch.
165
Volume (down)
Depress VOL down switch.
487
Power
Depress PWR switch.
0
20
17
Seek (up)
Depress
switch.
165
Volume (up)
Depress VOL up switch.
487
Mode
Depress MODE 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
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