Nissan Pathfinder. Manual — part 75
AV
U121C AV CONTROL UNIT
AV-127
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO WITHOUT BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U121C AV CONTROL UNIT
DTC Logic
INFOID:0000000009174446
CONSULT Display
DTC Detection Condition
Possible Cause
HDD ACCESS
[U121C]
AV control unit malfunction is detected.
If the hard disk drive (HDD) is functioning normal-
ly, there is a possibility of an intermittent malfunc-
tion.
Replace AV control unit if malfunction occurs con-
stantly.
Refer to
AV-128
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO WITHOUT BOSE]
U121D AV CONTROL UNIT
U121D AV CONTROL UNIT
DTC Logic
INFOID:0000000009174447
Diagnosis Procedure
INFOID:0000000009174448
1.
CHECK CD PLAYBACK
Check the CD playback operation of the AV control unit. Refer to Owner’s Manual for audio system operating
instructions.
Is the CD playback function of the AV control unit operating normally?
YES
>> Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace AV control unit. Refer to
AV-187, "Removal and Installation"
.
CONSULT Display
DTC Detection Condition
Possible Cause
DSP CONN
[U121D]
AV control unit malfunction is detected.
An intermittent error causing disc player malfunc-
tion may be detected.
Replace AV control unit if malfunction occurs con-
stantly.
Refer to
AV-187, "Removal and Installation"
.
AV
U121E AV CONTROL UNIT
AV-129
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO WITHOUT BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U121E AV CONTROL UNIT
DTC Logic
INFOID:0000000009174449
Diagnosis Procedure
INFOID:0000000009174450
1.
CHECK CD PLAYBACK
Check the CD playback operation of the AV control unit. Refer to Owner’s Manual for audio system operating
instructions.
Is the CD playback function of the AV control unit operating normally?
YES
>> Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace AV control unit. Refer to
AV-187, "Removal and Installation"
.
CONSULT Display
DTC Detection Condition
Possible Cause
DSP COMM
[U121E]
AV control unit malfunction is detected.
An intermittent error causing disc player malfunc-
tion may be detected.
Replace AV control unit if malfunction occurs con-
stantly.
Refer to
AV-130
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO WITHOUT BOSE]
U1225 AV CONTROL UNIT
U1225 AV CONTROL UNIT
DTC Logic
INFOID:0000000009174451
CONSULT Display
DTC Detection Condition
Possible Cause
USB CONTROLLER
[U1225]
USB connection malfunction is detected.
Check that connection to USB connector is nor-
mal.
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