Nissan Murano. Manual — part 87
AV-126
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH COLOR DISPLAY]
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
Description
INFOID:0000000009721646
In composite image (AUX and camera image), transmit the vertical synchronizing (VP) signal and horizontal
synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images displayed
with AV control unit such as the image quality adjusting menu, etc.
Diagnosis Procedure
INFOID:0000000009721647
1.
CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector and AV control unit connector.
3.
Check continuity between display unit harness connector and AV control unit harness connector.
4.
Check continuity between display unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
1.
Connect display unit connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between display unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
NO
>> Replace display unit. Refer to
.
Display unit
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M194
8
M172
38
Existed
Display unit
Ground
Continuity
Connector
Terminal
M194
8
Not existed
(+)
(
−
)
Reference value
Display unit
Connector
Terminal
M194
8
Ground
SKIB3601E
AV
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
AV-127
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH COLOR DISPLAY]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
Description
INFOID:0000000009721648
In composite image (AUX and camera image), transmit the vertical synchronizing (VP) signal and horizontal
synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images displayed
with AV control unit such as the image quality adjusting menu, etc.
Diagnosis Procedure
INFOID:0000000009721649
1.
CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector and AV control unit connector.
3.
Check continuity between display unit harness connector and AV control unit harness connector.
4.
Check continuity between display unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
1.
Connect display unit connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between display unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
NO
>> Replace display unit. Refer to
.
Display unit
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M194
20
M172
50
Existed
Display unit
Ground
Continuity
Connector
Terminal
M194
20
Not existed
(+)
(
−
)
Reference value
Display unit
Connector
Terminal
M194
20
Ground
SKIB3598E
AV-128
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH COLOR DISPLAY]
COMPOSITE IMAGE SIGNAL CIRCUIT
COMPOSITE IMAGE SIGNAL CIRCUIT
Description
INFOID:0000000009721650
AV control unit that inputs the camera image signal and AUX image signal transmits the composite image sig-
nal to the display unit.
Diagnosis Procedure
INFOID:0000000009721651
1.
CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and display unit connector.
3.
Check continuity between AV control unit harness connector and display unit harness connector.
4.
Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK COMPOSITE IMAGE SIGNAL
1.
Connect AV control unit connector and display unit connector.
2.
Turn ignition switch ON.
3.
Check signal between AV control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace display unit. Refer to
.
NO
>> Replace AV control unit. Refer to
AV control unit
Display unit
Continuity
Connector
Terminal
Connector
Terminal
M172
47
M194
15
Existed
AV control unit
Ground
Continuity
Connector
Terminal
M172
47
Not existed
(+)
(
−
)
Condition
Reference value
AV control unit
Connector
Terminal
M172
47
Ground
At camera image is dis-
played.
SKIB2251J
AV
AUX IMAGE SIGNAL CIRCUIT
AV-129
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH COLOR DISPLAY]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
AUX IMAGE SIGNAL CIRCUIT
Description
INFOID:0000000009721652
• Transmits the image signal of AUX device from auxiliary input jacks to AV control unit.
• AV control unit transmits the image signal that is input to the display unit.
Diagnosis Procedure
INFOID:0000000009721653
1.
CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect auxiliary input jacks connector and AV control unit connector.
3.
Check continuity between auxiliary input jacks harness connector and AV control unit harness connector.
4.
Check continuity between auxiliary input jacks harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK AUX IMAGE SIGNAL
1.
Connect auxiliary input jacks connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between auxiliary input jacks harness connector and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
NO
>> Check that there is no malfunction in the external device.
Auxiliary input jacks
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M253
7
M173
61
Existed
Auxiliary input jacks
Ground
Continuity
Connector
Terminal
M253
7
Not existed
(+)
(
−
)
Condition
Reference value
Auxiliary input jacks
Connector
Terminal
M253
7
Ground
At AUX image is displayed.
SKIB2251J
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