Infiniti FX35, FX50 (S51). Manual — part 188
AV
AUX IMAGE SIGNAL CIRCUIT
AV-525
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION (TWIN MONITOR)]
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AUX IMAGE SIGNAL CIRCUIT
Description
INFOID:0000000005474875
• 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:0000000005474876
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
M196
7
M209
26
Existed
Auxiliary input jacks
Ground
Continuity
Connector
Terminal
M196
7
Not existed
(+)
(
−
)
Condition
Reference value
Auxiliary input jacks
Connector
Terminal
M196
7
Ground
At AUX image is displayed.
SKIB2251J
AV-526
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION (TWIN MONITOR)]
DISK EJECT SIGNAL CIRCUIT
DISK EJECT SIGNAL CIRCUIT
Description
INFOID:0000000005474877
The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.
Diagnosis Procedure
INFOID:0000000005474878
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 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. Refer to
NO
>> Replace AV control unit. Refer to
Multifunction switch
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M72
14
M209
29
Existed
Multifunction switch
Ground
Continuity
Connector
Terminal
M72
14
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
AV control unit
Connector
Terminal
M209
29
Ground
Pressing the eject switch
0 V
Except for above
5.0 V
AV
MODE CHANGE SIGNAL CIRCUIT
AV-527
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION (TWIN MONITOR)]
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MODE CHANGE SIGNAL CIRCUIT
Description
INFOID:0000000005474879
• AV control unit transmits the mode change signal to BOSE amp.
• Driver's Audio Stage controls the speaker's output characteristic by BOSE amp. so that the driver's seat is to
be the center of sounds.
Diagnosis Procedure
INFOID:0000000005474880
1.
CHECK CONTINUITY MODE CHANGE SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BOSE amp. connector and AV control unit connector.
3.
Check continuity between BOSE amp. harness connector and AV control unit harness connector.
4.
Check continuity between BOSE amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK MODE CHANGE SIGNAL
1.
Connect BOSE amp. connector.
2.
Turn ignition switch ON.
3.
Check signal between BOSE amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
NO
>> Replace BOSE amp. Refer to
.
BOSE amp.
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
B41
17
M209
30
Existed
BOSE amp.
Ground
Continuity
Connector
Terminal
B41
17
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
BOSE amp.
Connector
Terminal
B41
17
Ground
Driver's Audio Stage ON
0 V
Driver's Audio Stage OFF
8.5 V
AV-528
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION (TWIN MONITOR)]
MICROPHONE SIGNAL CIRCUIT
MICROPHONE SIGNAL CIRCUIT
Description
INFOID:0000000005474881
Supply power from AV control unit to microphone. The microphone transmits the sound/voice to the AV control
unit.
Diagnosis Procedure
INFOID:0000000005474882
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. Refer to
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
M210
71
R17
2
Existed
72
4
87
1
AV control unit
Ground
Continuity
Connector
Terminals
M210
72
Not existed
87
(+)
(
−
)
Voltage
(Approx.)
AV control unit
Ground
Connector
Terminal
M210
72
5.0 V
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