Infiniti G37 Coupe. Manual — part 106
AV
CONTROL SIGNAL CIRCUIT
AV-177
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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CONTROL SIGNAL CIRCUIT
Description
INFOID:0000000001559044
TEL adapter unit identifies the vehicle model according to the control signal and performs the control.
Diagnosis Procedure
INFOID:0000000001559045
1.
CHECK CONTINUITY CONTROL SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TEL adapter unit connector.
3.
Check continuity between TEL adapter unit harness connector terminals 23, 24 and ground.
Is the inspection result normal?
YES
>> Replace TEL adapter unit.
NO
>> Repair harness or connector.
23, 24 - Ground
: Continuity should exist.
AV-178
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
MODE CHANGE SIGNAL CIRCUIT
MODE CHANGE SIGNAL CIRCUIT
Description
INFOID:0000000001907369
• 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:0000000001907370
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 terminal 37 and AV control unit harness con-
nector terminal 27.
4.
Check continuity between BOSE amp. harness connector terminal 37 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 terminal 37 and ground.
Is the inspection result normal?
YES
>> Replace AV control unit.
NO
>> Replace BOSE amp.
37 - 27
: Continuity should exist.
37 - Ground
: Continuity should not exist.
Terminal
Condition
Reference value
37 - Ground
Ignition
switch
ON
—
8.5 V
AV
COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)
AV-179
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)
Description
INFOID:0000000001559046
Satellite radio tuner and AV control unit are connected with a serial communication. They transmit the opera-
tion signal from AV control unit to satellite radio tuner, and transmit the display signal from satellite radio tuner
to AV control unit.
Diagnosis Procedure
INFOID:0000000001559047
1.
CHECK CONTINUITY COMMUNICATION SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect satellite radio tuner connector and AV control unit connector.
3.
Check continuity between satellite radio tuner harness connector terminals 9, 10 and AV control unit har-
ness connector terminals 29, 30.
4.
Check continuity between satellite radio tuner harness connector terminals 9, 10 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK COMMUNICATION SIGNAL
1.
Connect satellite radio tuner connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between satellite radio tuner harness connector terminal 9 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace satellite radio tuner.
3.
CHECK COMMUNICATION SIGNAL
Check signal between satellite radio tuner harness connector terminal 10 and ground.
Is the inspection result normal?
YES
>> Replace satellite radio tuner.
9 - 29
: Continuity should exist.
10 - 30
: Continuity should exist.
9, 10 - Ground
: Continuity should not exist.
Terminal
Condition
Reference value
9 - Ground
Ignition
switch
ON
When satellite radio mode is se-
lected.
SKIA9300J
Terminal
Condition
Reference value
10 - Ground
Ignition
switch
ON
When satellite radio mode is se-
lected.
SKIA9301J
AV-180
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)
NO
>> Replace AV control unit.
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