Nissan Teana J32. Manual — part 59
AV
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
AV-91
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
C
D
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F
G
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HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
Description
INFOID:0000000003882749
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:0000000003901211
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 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 terminal and ground using an oscilloscope.
Is inspection result normal?
YES
>> Replace AV control unit.
NO
>> Replace display unit.
Display unit
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M49
8
M129
45
Existed
Display unit
Ground
Continuity
Connector
Terminal
M49
8
Not existed
(+)
(
−
)
Condition
Reference value
Display unit
Connector
Terminal
M49
8
Ground
—
SKIB3601E
AV-92
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
Description
INFOID:0000000003882751
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:0000000003901212
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 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 terminal and ground using an oscilloscope.
Is inspection result normal?
YES
>> Replace AV control unit.
NO
>> Replace display unit.
Display unit
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M49
20
M129
57
Existed
Display unit
Ground
Continuity
Connector
Terminal
M49
20
Not existed
(+)
(
−
)
Condition
Reference value
Display unit
Connector
Terminal
M49
20
Ground
—
SKIB3598E
AV
AUX IMAGE SIGNAL CIRCUIT
AV-93
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
C
D
E
F
G
H
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J
K
L
M
B
A
O
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AUX IMAGE SIGNAL CIRCUIT
Description
INFOID:0000000003882753
Transmits the image signal of external device from auxiliary input jacks to AV control unit.
Diagnosis Procedure
INFOID:0000000003882754
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 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.
Make AUX image signal being input.
4.
Check signal between auxiliary input jacks harness connector using an oscilloscope.
Is inspection result normal?
YES
>> Replace AV control unit.
NO
>> Check that there is no malfunction in the external device.
Auxiliary input jacks
AV control unit
Continuity
Connector
Terminals
Connector
Terminals
M253
7
M130
66
Existed
8
74
Auxiliary input jacks
Ground
Continuity
Connector
Terminal
M253
7
Not existed
(+)
(
−
)
Condition
Reference value
Auxiliary input jacks
Auxiliary input jacks
Connector
Terminal
Connector
Terminal
M253
7
M253
8
When AUX image is displayed.
SKIB2251J
AV-94
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
DISK EJECT SIGNAL CIRCUIT
DISK EJECT SIGNAL CIRCUIT
Description
INFOID:0000000003882755
The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.
Diagnosis Procedure
INFOID:0000000003901213
1.
CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect multifunction switch connector and AV control unit connector.
3.
Check continuity between multifunction switch harness connector and AV control unit harness connector.
4.
Check continuity between multifunction switch harness connector and ground.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK AV CONTROL UNIT VOLTAGE
1.
Connect multifunction switch connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector and ground.
Is inspection result normal?
YES
>> Replace preset switch.
NO
>> Replace AV control unit.
Multifunction switch
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M125
14
M131
103
Existed
Multifunction switch
Ground
Continuity
Connector
Terminal
M125
14
Not existed
(+)
(
−
)
Condition
Reference value
AV control unit
Connector
Terminal
M131
103
Ground
Pressing the eject switch.
0 V
Except for above.
3.3 V
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