Nissan Quest E52. Instruction — part 86
AV
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
AV-223
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
Description
INFOID:0000000009652056
In composite image (DVD, auxiliary input, and camera images), transmit the vertical synchronizing (VP) signal
and horizontal synchronizing (HP) signal from front 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:0000000009652057
1.
CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front display unit connector and AV control unit connector.
3.
Check continuity between front display unit harness connector and AV control unit harness connector.
4.
Check continuity between front 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 front display unit connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between front display unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
AV-250, "Removal and Installation"
.
NO
>> Replace front display unit. Refer to
AV-251, "Removal and Installation"
.
Front display unit
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M156
8
M172
38
Existed
Front display unit
Ground
Continuity
Connector
Terminal
M156
8
Not existed
Probe
Standard
Reference value
(+)
(-)
Front display unit
Connector
Terminal
Connector
Terminal
M156
8
M156
1
Waveform of 1.0 V - 5.5
V is output.
SKIB3601E
AV-224
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
Description
INFOID:0000000009652058
In composite image (DVD, auxiliary input, and camera images), transmit the vertical synchronizing (VP) signal
and horizontal synchronizing (HP) signal from front 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:0000000009652059
1.
CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front display unit connector and AV control unit connector.
3.
Check continuity between front display unit harness connector and AV control unit harness connector.
4.
Check continuity between front 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 front display unit connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between front display unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
AV-250, "Removal and Installation"
.
NO
>> Replace front display unit. Refer to
AV-251, "Removal and Installation"
.
Front display unit
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M156
20
M172
50
Existed
Front display unit
Ground
Continuity
Connector
Terminal
M156
20
Not existed
Probe
Standard
Reference value
(+)
(-)
Front display unit
Connector
Terminal
Connector
Terminal
M156
20
M156
1
Waveform of 1.0 V - 5.5
V is output.
SKIB3598E
AV
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DIS-
PLAY UNIT)
AV-225
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT
DISPLAY UNIT)
Description
INFOID:0000000009652060
The AV control unit outputs image signal (DVD, auxiliary input, and camera) to the front display unit and rear
display unit by composite image signal.
Diagnosis Procedure
INFOID:0000000009652061
1.
CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DISPLAY
UNIT)
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and front display unit connector.
3.
Check continuity between AV control unit harness connector and front display unit harness connector.
4.
Check continuity between AV control unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK COMPOSITE IMAGE SIGNAL (AV CONTROL UNIT TO FRONT DISPLAY UNIT)
1.
Connect AV control unit connector and front display unit connector.
2.
Turn ignition switch ON.
3.
Check signal between front display unit harness connector.
Is inspection result normal?
YES
>> Replace front display unit. Refer to
AV-251, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
AV-250, "Removal and Installation"
.
AV control unit
Front display unit
Continuity
Connector
Terminal
Connector
Terminal
M172
46
M156
4
Existed
47
15
AV control unit
Ground
Continuity
Connector
Terminal
M172
46
Not existed
47
Probe
Condition
Standard
Reference value
(+)
(
−
)
Front display unit
Connector
Terminal
Connector
Terminal
M156
15
M156
4
When DVD,
AUX or cam-
era image is
displayed.
Waveform according to
composite image is in-
put.
SKIB2251J
AV-226
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO REAR DISPLAY
UNIT)
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO REAR DIS-
PLAY UNIT)
Description
INFOID:0000000009652062
The AV control unit outputs image signal (DVD, auxiliary input, and camera) to the front display unit and rear
display unit by composite image signal.
Diagnosis Procedure
INFOID:0000000009652063
1.
CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO REAR DISPLAY
UNIT)
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and rear display unit connector.
3.
Check continuity between AV control unit harness connector and rear 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 (AV CONTROL UNIT TO REAR DISPLAY UNIT)
1.
Connect AV control unit connector and rear display unit connector.
2.
Turn ignition switch ON.
3.
Check signal between rear display unit harness connector.
Is the inspection result normal?
YES
>> Replace rear display unit. Refer to
AV-252, "Removal and Installation"
NO
>> Replace AV control unit. Refer to
AV-250, "Removal and Installation"
.
AV control unit
Rear display unit
Continuity
Connector
Terminal
Connector
Terminal
M173
67
R36
7
Existed
66
8
AV control unit
Ground
Continuity
Connector
Terminal
M173
67
Not existed
66
Probe
Condition
Standard
Reference value
(+)
(
−
)
Rear display unit
Connector
Terminal
Connector
Terminal
R36
7
R36
8
When DVD
or AUX im-
age is dis-
played.
Waveform according to
composite image is in-
put.
SKIB2251J
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