Nissan GT-R. Instruction — part 38
AV
DISK EJECT SIGNAL CIRCUIT
AV-147
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
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G
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DISK EJECT SIGNAL CIRCUIT
Description
INFOID:0000000009163411
The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.
Diagnosis Procedure
INFOID:0000000009163412
1.
CHECK CONTINUITY CD 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 the 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 the inspection result normal?
YES
>> Replace preset switch.
NO
>> Replace AV control unit.
Multifunction switch
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M72
14
M202
29
Existed
Multifunction switch
Ground
Continuity
Connector
Terminal
M72
14
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
AV control unit
Connector
Terminal
M202
29
Ground
Pressing the eject switch
0 V
Except for above
5.0 V
AV-148
< DTC/CIRCUIT DIAGNOSIS >
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MICROPHONE SIGNAL CIRCUIT
MICROPHONE SIGNAL CIRCUIT
Description
INFOID:0000000009163413
Supply power from AV control unit to microphone. The microphone transmits the voice signal to the AV control
unit.
Diagnosis Procedure
INFOID:0000000009163414
1.
CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND MICROPHONE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and microphone connector.
3.
Check continuity between AV control unit harness connector and microphone 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 VOLTAGE MICROPHONE VCC
1.
Connect AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace AV control unit.
3.
CHECK MICROPHONE SIGNAL
1.
Connect microphone connector.
2.
Check signal between AV control unit harness connector.
AV control unit
Microphone
Continuity
Connector
Terminals
Connector
Terminals
M203
71
R5
2
Existed
72
4
87
1
AV control unit
Ground
Continuity
Connector
Terminals
M203
72
Not existed
87
(+)
(
−
)
Voltage
(Approx.)
AV control unit
AV control unit
Connector
Terminal
Connector
Terminal
M203
72
M203
71
5.0 V
AV
MICROPHONE SIGNAL CIRCUIT
AV-149
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
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G
H
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B
A
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Is the inspection result normal?
YES
>> Replace AV control unit.
NO
>> Replace microphone.
(+)
(
−
)
Condition
Reference value
AV control unit
AV control unit
Connector
Terminal
Connector
Terminal
M203
87
M203
71
Give a voice.
PKIB5037J
AV-150
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
CAMERA IMAGE SIGNAL CIRCUIT
CAMERA IMAGE SIGNAL CIRCUIT
Description
INFOID:0000000009163415
• The AV control unit supplies power to the rear view camera when receiving a reverse signal.
• The rear view camera transmits camera images to the display unit when power is supplied from the AV con-
trol unit.
Diagnosis Procedure
INFOID:0000000009163416
1.
CHECK CONTINUITY CAMERA POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and rear view camera connector.
3.
Check continuity between AV control unit harness connector and rear view camera 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 VOLTAGE CAMERA POWER SUPPLY
1.
Connect AV control unit connector and rear view camera connector.
2.
Turn ignition switch ON.
3.
Shift the selector lever to “R”.
4.
Check voltage between AV control unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Replace AV control unit. Refer to
AV-168, "Removal and Installation"
.
3.
CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector and rear view camera connector.
3.
Check continuity between display unit harness connector and rear view camera harness connector.
4.
Check continuity between display unit harness connector and ground.
AV control unit
Rear view camera
Continuity
Connector
Terminal
Connector
Terminal
M202
22
B156
1
Existed
AV control unit
Ground
Continuity
Connector
Terminal
M202
22
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
AV control unit
Connector
Terminal
M202
22
Ground
Shift position is “R”.
6.0 V
Display unit
Rear view camera
Continuity
Connector
Terminal
Connector
Terminal
M93
8
B156
3
Existed
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