Nissan Maxima. Instruction — part 146
AV-404
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/ BOSE]
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
Description
INFOID:0000000009471362
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:0000000009471363
Regarding Wiring Diagram information, refer to
AV-449, "Wiring Diagram - With BOSE Audio system Without
1.
CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M141 and AV control unit con-
nector M154.
3. Check continuity between display unit harness connector M141
(A) terminal 20 and AV control unit harness connector M154 (B)
terminal 57.
4. Check continuity between display unit harness connector M141
(A) terminal 20 and ground.
Are continuity results as specified?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
1. Connect display unit connector M141 and AV control unit con-
nector M154.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M141 ter-
minal 20 and ground.
Are voltage readings as specified?
YES
>> Replace AV control unit. Refer to
AV-481, "Removal and Installation"
.
A
B
Continuity
Connector
Terminal
Connector
Terminal
M141
20
M154
57
Yes
A
—
Continuity
Connector
Terminal
M141
20
Ground
No
ALNIA0392GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M141
20
Ground
Receive
audio sig-
nal
ALNIA0393GB
SKIB3598E
AV
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
AV-405
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/ BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
NO
>> Replace display unit. Refer to
AV-406
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/ BOSE]
FRONT DOOR SPEAKER
FRONT DOOR SPEAKER
Description
INFOID:0000000009471364
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the
audio signals before sending them to the front door speakers using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000009471365
Regarding Wiring Diagram information, refer to
AV-449, "Wiring Diagram - With BOSE Audio system Without
1.
CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and speaker connectors for the following:
• Proper connection
• Damage
• Disconnected or loose terminals
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair the terminal and connector.
2.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connector B109 and suspect
speaker connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor B109 (A) and suspect speaker harness connector (B).
3. Check continuity between BOSE speaker amp. harness connec-
tor B109 (A) and ground.
Are continuity test results as specified?
YES
>> GO TO 3.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
3.
FRONT DOOR SPEAKER SIGNAL CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
B109
18
D3
1
Yes
19
2
31
D103
1
32
2
A
B
Continuity
Connector
Terminal
B109
18
Ground
No
19
31
32
AWNIA1694ZZ
AV
FRONT DOOR SPEAKER
AV-407
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/ BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Connect BOSE speaker amp. connector B109 and suspect
speaker connector.
2. Turn ignition switch to ACC.
3. Push POWER switch.
4. Check the signal between BOSE speaker amp. harness connec-
tor B109 terminals with CONSULT or oscilloscope.
Is audio signal voltage as specified?
YES
>> Replace suspect speaker. Refer to
.
NO
>> GO TO 4.
4.
HARNESS CHECK
1. Disconnect AV control unit connector M157 and BOSE speaker
amp. connector B109.
2. Check continuity between AV control unit harness connector
M157 (A) and BOSE speaker amp. harness connector B109 (B).
3. Check continuity between AV control unit harness connector
M157 (A) and ground.
Are continuity test results as specified?
YES
>> GO TO 5.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
5.
FRONT DOOR SPEAKER SIGNAL CHECK
Connec-
tor
Terminal
Condition
Reference
signal
(+)
(-)
B109
18
19
Receive
audio sig-
nal
31
32
AWNIA1695ZZ
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M157
113
B109
35
Yes
119
36
109
33
115
34
A
—
Continuity
Connector
Terminal
M157
113
Ground
No
119
109
115
AWNIA1761ZZ
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