Nissan Pathfinder. Manual - part 172

AV

U121D AV CONTROL UNIT

AV-515

< DTC/CIRCUIT DIAGNOSIS >

[PREMIUM AUDIO WITH NAVIGATION]

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U121D AV CONTROL UNIT

DTC Logic

INFOID:0000000009174713

Diagnosis Procedure

INFOID:0000000009174714

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-611, "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-611, "Removal and Installation"

.

AV-516

< DTC/CIRCUIT DIAGNOSIS >

[PREMIUM AUDIO WITH NAVIGATION]

U121E AV CONTROL UNIT

U121E AV CONTROL UNIT

DTC Logic

INFOID:0000000009174715

Diagnosis Procedure

INFOID:0000000009174716

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-611, "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-611, "Removal and Installation"

.

AV

U1225 AV CONTROL UNIT

AV-517

< DTC/CIRCUIT DIAGNOSIS >

[PREMIUM AUDIO WITH NAVIGATION]

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U1225 AV CONTROL UNIT

DTC Logic

INFOID:0000000009174717

CONSULT Display

DTC Detection Condition

Possible Cause

USB CONTROLLER
[U1225]

USB connection malfunction is detected.

Check that connection to USB connector is nor-
mal.

AV-518

< DTC/CIRCUIT DIAGNOSIS >

[PREMIUM AUDIO WITH NAVIGATION]

U1227 AV CONTROL UNIT

U1227 AV CONTROL UNIT

DTC Logic

INFOID:0000000009174718

Diagnosis Procedure

INFOID:0000000009174719

1.

CHECK DVD PLAYBACK

Check the DVD playback operation of the AV control unit. Refer to Owner’s Manual for audio system operating

instructions.
Is the DVD playback function of the AV control unit operating normally?

YES

>> Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Replace AV control unit. Refer to 

AV-611, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

DVD COMM
[U1227]

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-611, "Removal and Installation"

.