Infiniti QX56 (Z62). Manual — part 70
AV-134
< DTC/CIRCUIT DIAGNOSIS >
U121D AV CONTROL UNIT
U121D AV CONTROL UNIT
DTC Logic
INFOID:0000000006216279
Diagnosis Procedure
INFOID:0000000006216280
1.
CHECK PLAYBACK OF A DISK (CD)
Can a disk (CD) be played?
YES
>> Malfunction may be detected transitory.
NO
>> Replace AV control unit. Refer to
AV-212, "Removal and Installation"
.
DTC
Display contents of
CONSULT-III
DTC detection condition
Possible malfunction factor
U121D
DSP CONN
[U121D]
AV control unit malfunction is detected.
• If a disc can be played, then there
is a possibility of the detection of a
temporary malfunction.
• Replace the AV control unit if the
malfunction occurs constantly.
Refer to
.
AV
U121E AV CONTROL UNIT
AV-135
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U121E AV CONTROL UNIT
DTC Logic
INFOID:0000000006216281
Diagnosis Procedure
INFOID:0000000006216282
1.
CHECK PLAYBACK OF A DISK (CD)
Can a disk (CD) be played?
YES
>> Malfunction may be detected transitory.
NO
>> Replace AV control unit. Refer to
AV-212, "Removal and Installation"
.
DTC
Display contents of
CONSULT-III
DTC detection condition
Possible malfunction factor
U121E
DSP COMM
[U121E]
AV control unit malfunction is detected.
• If a disc can be played, then there
is a possibility of the detection of a
temporary malfunction.
• Replace the AV control unit if the
AV-136
< DTC/CIRCUIT DIAGNOSIS >
U1225 AV CONTROL UNIT
U1225 AV CONTROL UNIT
DTC Logic
INFOID:0000000006216283
DTC DETECTION LOGIC
DTC
Display contents of CON-
SULT-III
DTC detection condition
Possible malfunction factor
U1225
USB CONTROLLER
[U1225]
USB connection malfunction is detected.
Check that the connection to the USB con-
nector is normal.
AV
U1227 AV CONTROL UNIT
AV-137
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1227 AV CONTROL UNIT
DTC Logic
INFOID:0000000006216284
Diagnosis Procedure
INFOID:0000000006216285
1.
CHECK PLAYBACK OF A DISK (DVD)
Can a disc (DVD) be played?
YES
>> Malfunction may be detected transitory.
NO
>> Replace AV control unit. Refer to
AV-212, "Removal and Installation"
.
DTC
Display contents of
CONSULT-III
DTC detection condition
Possible malfunction factor
U1227
DVD COMM [U1227]
AV control unit malfunction is detected.
• If DVD can be played, then there is
a possibility of the detection of a
temporary malfunction.
• Replace the AV control unit if the
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