Infiniti G35 (V35) Sedan. Manual — part 66
AV-36
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
U1243 DISPLAY UNIT
Is inspection result OK?
YES
>> GO TO 4.
NO
>> Replace AV control unit.
4.
CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector terminal 22 and ground.
Is inspection result OK?
YES
>> INSPECTION END
NO
>> Replace display unit.
11 - Ground
:
PKIB5039J
22 - Ground
:
PKIB5039J
AV
U1255 SATELLITE RADIO TUNER
AV-37
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
N
A
O
P
U1255 SATELLITE RADIO TUNER
Description
INFOID:0000000000964545
DTC Logic
INFOID:0000000000964546
Diagnosis Procedure
INFOID:0000000000964547
1.
CHECK SATELLITE RADIO TUNER POWER SUPPLY AND GROUND CIRCUIT
Check satellite radio tuner power supply and ground circuit. Refer to
AV-41, "SATELLITE RADIO TUNER :
.
Is inspection result OK?
YES
>> INSPECTION END
NO
>> Repair malfunctioning parts.
Part name
Description
SATELLITE RADIO TUNER
• Inputs the satellite radio signal from satellite radio antenna and outputs it to
the AV control unit.
• It is controlled with the communication (communication signal, request sig-
nal) from AV control unit.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1255
SAT CONN
[U1255]
The satellite radio tuner power supply and ground circuit
malfunction is detected
Satellite radio tuner power supply and
ground circuit
AV-38
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
U1300 AV COMM CIRCUIT
U1300 AV COMM CIRCUIT
Description
INFOID:0000000000964548
U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta-
neously, without fail, with the malfunction of control units connected to AV control unit with communication line.
Determine the possible malfunction cause from the table below.
Self-diagnosis results display item
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1300
U1240
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• Multifunction switch power supply and ground circuit
malfunction is detected
• A malfunction is detected in communication circuit be-
tween AV control unit and multifunction switch
• A malfunction is detected in communication signal be-
tween AV control unit and multifunction switch
• Multifunction switch power supply
and ground circuits
• Communication circuit between AV
control unit and multifunction
switch
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-39
< COMPONENT DIAGNOSIS >
[BASE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
N
A
O
P
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000000964549
1.
CHECK FUSE
Check for blown fuses.
Is inspection result OK?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connectors and ground.
Is inspection result OK?
YES
>> GO TO 3.
NO
>> Check harness between AV control unit and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connectors.
3.
Check continuity between AV control unit harness connectors and ground.
Is inspection result OK?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000000964550
1.
CHECK POWER SUPPLY CIRCUIT (DISPLAY SIDE)
Check voltage between Display unit harness connector and ground.
Is inspection result OK?
YES
>> GO TO 4.
NO
>> GO TO 2.
Power source
Fuse No.
Battery
34
Ignition switch ACC or ON
19
Ignition switch ON or START
3
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Battery power supply
M81
19
OFF
12 V
ACC power supply
M81
7
ACC
12 V
Ignition signal
M85
104
ON
12 V
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M81
20
OFF
Continuity should exist.
M85
85
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Inverter VCC
M71
2
ACC
9 V
Signal VCC
3
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