Infiniti G35 (V35) Sedan. Manual — part 70
AV-52
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)
COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)
Description
INFOID:0000000000964571
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:0000000000964572
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 inspection result OK?
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 inspection result OK?
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 inspection result OK?
YES
>> Replace satellite radio tuner.
NO
>> Replace AV control unit.
9 - 29
: Continuity should exist.
10 - 30
: Continuity should exist.
9, 10 - Ground
: Continuity should not exist.
9 - Ground
SKIA9300J
10 - Ground
SKIA9301J
AV
REQUEST SIGNAL CIRCUIT (SAT
→
CONT)
AV-53
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
N
A
O
P
REQUEST SIGNAL CIRCUIT (SAT
→
CONT)
Description
INFOID:0000000000964573
Request signal transmits the signal to recognize the connection of satellite radio tuner from satellite radio
tuner to AV control unit.
Diagnosis Procedure
INFOID:0000000000964574
1.
CHECK CONTINUITY REQUEST 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 unit harness connector terminal 8 and AV control unit har-
ness connector terminal 28.
4.
Check continuity between satellite radio tuner harness connector terminal 8 and ground.
Is inspection result OK?
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 8 and ground.
Is inspection result OK?
YES
>> Replace AV control unit.
NO
>> Replace satellite radio tuner.
8 - 28
: Continuity should exist.
8 - Ground
: Continuity should not exist.
8 - Ground
SKIA9299J
AV-54
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
STEERING SWITCH SIGNAL A CIRCUIT
STEERING SWITCH SIGNAL A CIRCUIT
Description
INFOID:0000000000964575
Transmits the steering switch signal to AV control unit.
Diagnosis Procedure
INFOID:0000000000964576
1.
CHECK STEERING SWITCH SIGNAL A CIRCUIT
1.
Disconnect AV control unit connector and spiral cable connector.
2.
Check continuity between AV control unit harness connector terminal 6 and spiral cable harness connec-
tor terminal 24.
3.
Check continuity between AV control unit harness connector terminals 6 and ground.
Is inspection result OK?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK SPIRAL CABLE
Check spiral cable.
Is inspection result OK?
YES
>> GO TO 3.
NO
>> Replace spiral cable.
3.
CHECK AV CONTROL UNIT VOLTAGE
1.
Connect AV control unit connector and spiral cable connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector terminals 6 and 15.
Is inspection result OK?
YES
>> GO TO 4.
NO
>> Replace AV control unit.
4.
CHECK STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Check steering switch. Refer to
.
Is inspection result OK?
YES
>> INSPECTION END
NO
>> Replace steering switch.
Component Inspection
INFOID:0000000000964577
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.
6 - 24
: Continuity should exist.
6 - Ground
: Continuity should not exist.
6 - 15
: Approx. 3.3 V
AV
STEERING SWITCH SIGNAL A CIRCUIT
AV-55
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
N
A
O
P
Standard
Between terminals 14 and 17
MENU DOWN switch ON
: 318 – 324
Ω
MENU UP switch ON
: 120 – 122
Ω
SOURCE switch ON
: 0
Ω
Between terminals 15 and 17
VOL UP switch ON
: 120 – 122
Ω
VOL DOWN switch ON
: 0
Ω
JSNIA0215GB
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