Infiniti FX35, FX50 (S51). Manual - part 124

AV

U1225 AV CONTROL UNIT

AV-269

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

C

D

E

F

G

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B

A

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P

U1225 AV CONTROL UNIT

DTC Logic

INFOID:0000000005475674

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-270

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

U1227 AV CONTROL UNIT

U1227 AV CONTROL UNIT

DTC Logic

INFOID:0000000005475676

Diagnosis Procedure

INFOID:0000000005475677

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-333, "Exploded View"

.

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 

malfunction occurs constantly.

AV

U1228 AV CONTROL UNIT

AV-271

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1228 AV CONTROL UNIT

DTC Logic

INFOID:0000000005475679

DTC DETECTION LOGIC

DTC

Display contents of CON-

SULT-III

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.

AV-272

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

U1229 AV CONTROL UNIT

U1229 AV CONTROL UNIT

DTC Logic

INFOID:0000000005475681

DTC DETECTION LOGIC

DTC

Display contents of CON-

SULT-III

DTC detection condition

Possible malfunction factor

U1229

iPod CERTIFICATION 
[U1229]

AV control unit malfunction is detected.

Replace the AV control unit if the malfunction 
occurs constantly.