Nissan Leaf. Manual - part 74

AV

U1263 USB

AV-287

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1263 USB

DTC Logic

INFOID:0000000010122558

DTC DETECTION LOGIC

NOTE:

Before performing the diagnosis, be sure to check that the external input device has no malfunction.

Diagnosis Procedure

INFOID:0000000010122559

1.

CHECK USB HARNESS

Check the USB harness visually and check if there is any pinching.
Is the check result normal?

YES

>> Replace the AV control unit. Refer to 

AV-318, "Removal and Installation"

.

NO

>> Replace the USB harness. Refer to 

AV-329, "Removal and Installation"

.

DTC

Display contents of CON-

SULT

Malfunction detection condition

Action to take

U1263

USB overcurrent
 [U1263] 

Overcurrent of the USB connector is detected.

Check the USB harness be-
tween the AV control unit 
and USB connector.

AV-288

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

U1266 AV CONTROL UNIT

U1266 AV CONTROL UNIT

DTC Logic

INFOID:0000000010122560

DTC

Display contents of CON-

SULT

DTC detection condition

Action to take

U1266

TCU CONN
 [U1266] 

Malfunction is detected between the AV control unit and 
TCU.

Check the connection be-
tween the AV control unit and 
TCU.

AV

U1300 AV COMM CIRCUIT

AV-289

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1300 AV COMM CIRCUIT

Description

INFOID:0000000010122561

U1300 is displayed when the AV signal error is detected for the multi AV system. It is always displayed

together with the error of the control unit connected to the AV control unit via AV communication. Determine

the possible malfunction cause from the table below.

SELF-DIAGNOSIS RESULTS DISPLAY ITEM

DTC

Display contents of CONSULT

Description

Probable malfunction location

U1300
U1240

• AV COMM CIRCUIT [U1300]
• SWITCH CONN [U1240]

When either one of the following items 
are detected:
• multifunction switch power supply and 

ground circuits are malfunctioning.

• AV communication circuits between 

the AV control unit and multifunction 
switch are malfunctioning.

• Multifunction switch power supply 

and ground circuits.

• AV communication circuits be-

tween AV control unit and multi-
function switch.

AV-290

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION WITHOUT BOSE]

U1310 AV CONTROL UNIT

U1310 AV CONTROL UNIT

DTC Logic

INFOID:0000000010122562

DTC

Display contents of 

CONSULT

DTC detection condition

Action to take

U1310

CONTROL UNIT (AV)
 [U1310] 

AV communication circuit initial diagnosis malfunction is 
detected

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

AV-318, "Removal and Installa-

tion"

.