Infiniti QX56 (Z62). Manual - part 69

AV-130

< DTC/CIRCUIT DIAGNOSIS >

U1219 AV CONTROL UNIT

U1219 AV CONTROL UNIT

DTC Logic

INFOID:0000000006216271

Diagnosis Procedure

INFOID:0000000006216272

1.

CHECK MUSIC BOX FUNCTION

Is music box function normal?

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

U1219

HDD READ
[U1219]

AV control unit malfunction is detected.

• If the music box function has no 

malfunctions, then there is a possi-
bility of the detection of a temporary 
malfunction.

• Replace the AV control unit if the 

malfunction occurs constantly.
Refer to 

AV-212, "Removal and In-

stallation"

.

AV

U121A AV CONTROL UNIT

AV-131

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U121A AV CONTROL UNIT

DTC Logic

INFOID:0000000006216273

Diagnosis Procedure

INFOID:0000000006216274

1.

CHECK MUSIC BOX FUNCTION

Is music box function normal?

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

U121A

HDD WRITE
[U121A]

AV control unit malfunction is detected.

• If the music box function has no 

malfunctions, then there is a possi-
bility of the detection of a temporary 
malfunction.

• Replace the AV control unit if the 

malfunction occurs constantly.
Refer to 

AV-212, "Removal and In-

stallation"

.

AV-132

< DTC/CIRCUIT DIAGNOSIS >

U121B AV CONTROL UNIT

U121B AV CONTROL UNIT

DTC Logic

INFOID:0000000006216275

Diagnosis Procedure

INFOID:0000000006216276

1.

CHECK MUSIC BOX FUNCTION

Is music box function normal?

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

U121B

HDD COMM
[U121B]

AV control unit malfunction is detected.

• If the music box function has no 

malfunctions, then there is a possi-
bility of the detection of a temporary 
malfunction.

• Replace the AV control unit if the 

malfunction occurs constantly.
Refer to 

AV-212, "Removal and In-

stallation"

.

AV

U121C AV CONTROL UNIT

AV-133

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U121C AV CONTROL UNIT

DTC Logic

INFOID:0000000006216277

Diagnosis Procedure

INFOID:0000000006216278

1.

CHECK MUSIC BOX FUNCTION

Is music box function normal?

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

U121C

HDD ACCESS
[U121C]

AV control unit malfunction is detected.

• If the music box function has no 

malfunctions, then there is a possi-
bility of the detection of a temporary 
malfunction.

• Replace the AV control unit if the 

malfunction occurs constantly.
Refer to 

AV-212, "Removal and In-

stallation"

.