Nissan Maxima. Manual - part 99

AV-216

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/O BOSE]

U121E AV CONTROL UNIT

U121E AV CONTROL UNIT

DTC Logic

INFOID:0000000010064850

Diagnosis Procedure

INFOID:0000000010064851

1.

CHECK PLAYBACK OF A DISK (CD)

Can a disk (CD) be played?

YES

>> Malfunction may be detected intermittently.

NO

>> Replace AV control unit. Refer to 

AV-311, "Removal and Installation"

.

DTC

Display contents of 

CONSULT

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 

malfunction occurs constantly. Re-
fer to 

AV-311, "Removal and Instal-

lation"

.

AV

U1225 AV CONTROL UNIT

AV-217

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/O BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1225 AV CONTROL UNIT

DTC Logic

INFOID:0000000010064852

DTC DETECTION LOGIC

DTC

Display contents of CON-

SULT

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-218

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/O BOSE]

U1227 AV CONTROL UNIT

U1227 AV CONTROL UNIT

DTC Logic

INFOID:0000000010064853

Diagnosis Procedure

INFOID:0000000010064854

1.

CHECK PLAYBACK OF A DISK (DVD)

Can a disc (DVD) be played?

YES

>> Malfunction may be detected intermittently.

NO

>> Replace AV control unit. Refer to 

AV-311, "Removal and Installation"

.

DTC

Display contents of 

CONSULT

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 

malfunction occurs constantly. Re-
fer to 

AV-311, "Removal and Instal-

lation"

.

AV

U1228 AV CONTROL UNIT

AV-219

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/O BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1228 AV CONTROL UNIT

DTC Logic

INFOID:0000000010064855

DTC DETECTION LOGIC

DTC

Display contents of CON-

SULT

DTC detection condition

Possible malfunction factor

U1228

SUB CPU CONN [U1228]

AV control unit malfunction is detected.

Replace the AV control unit if the malfunction 
occurs constantly. Refer to 

AV-311, "Removal 

and Installation"

.