Nissan GT-R (R35) · Service Manual
DRIVER INFORMATION & MULTIMEDIA
DRIVER INFORMATION & MULTIMEDIA › AUDIO, VISUAL & NAVIGATION SYSTEM › COMPONENT DIAGNOSIS
MICROPHONE SIGNAL CIRCUIT
BASE AUDIO WITH NAVIGATION
Description
Diagnosis Procedure
Description
Supply power from AV control unit to microphone. The microphone transmits the voice signal to the AV control unit.
Diagnosis Procedure
1.CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND MICROPHONE CIRCUIT
Turn ignition switch OFF.
Disconnect AV control unit connector and microphone connector.
Check continuity between AV control unit harness connector terminals 26, 27, 28 and microphone harness connector terminals 4, 2, 1.
AV control unit
Microphone
Continuity
Connector
Terminals
Connector
Terminals
M81
26
R5
4
Existed
27
2
28
1
Check continuity between AV control unit harness connector terminals 26, 28 and ground.
AV control unit
Ground
Continuity
Connector
Terminals
M81
26
Not existed
28
Is the inspection result normal?
YES
>>
GO TO 2
.
NO
>>
Repair harness or connector.
2.CHECK VOLTAGE MICROPHONE VCC
Connect AV control unit connector.
Turn ignition switch ON.
Check voltage between AV control unit harness connector terminals 26 and 27.
(+)
(-)
Condition
Voltage
(Approx.)
AV control unit
AV control unit
Connector
Terminal
Connector
Terminal
M81
26
M81
27
Ignition switch ON
5 V
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
Replace AV control unit.
3.CHECK MICROPHONE SIGNAL
Connect microphone connector.
Check signal between AV control unit harness connector terminals 28 and 27.
(+)
(-)
Condition
Reference value
AV control unit
AV control unit
Connector
Terminal
Connector
Terminal
M81
28
M81
27
Give a voice
Is the inspection result normal?
YES
>>
Replace AV control unit.
NO
>>
Replace microphone.
1.CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND MICROPHONE CIRCUIT