Nissan Maxima. Manual - part 187

AV-568

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/BOSE & NAVI]

U1263 USB

U1263 USB

DTC Logic

INFOID:0000000009471484

Diagnosis Procedure

INFOID:0000000009471485

1.

CHECK USB HARNESS

Visually check USB harness.
Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-652, "Removal and Installation"

.

NO

>> Replace USB harness.

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1263

USB OVERCURRENT
[U1263]

Detection of over current in USB interface.

Check USB harness between the AV 
control unit and USB interface.

AV

U1300 AV COMM CIRCUIT

AV-569

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/BOSE & NAVI]

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U1300 AV COMM CIRCUIT

Description

INFOID:0000000009471486

U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta-

neously, without fail, with the malfunction of control units connected to AV control unit with communication line.

Determine the possible malfunction cause from the table below.

SELF-DIAGNOSIS RESULTS DISPLAY ITEM

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

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 AV control unit 

and multifunction switch are malfunctioning.

• Multifunction switch power supply 

and ground circuits.

• AV communication circuits between 

AV control unit and multifunction 
switch.

AV-570

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/BOSE & NAVI]

U1310 AV CONTROL UNIT

U1310 AV CONTROL UNIT

DTC Logic

INFOID:0000000009471487

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1310

CONTROL UNIT (AV)
[U1310]

An initial diagnosis error is detected in AV communication 
circuit.

Replace AV control unit. If the mal-
function occurs constantly. Refer to 

AV-652, "Removal and Installation"

.

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-571

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/BOSE & NAVI]

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POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009471488

Regarding Wiring Diagram information, refer to 

AV-614, "Wiring Diagram - With BOSE audio system With Nav-

igation System"

.

1.

CHECK FUSES

Check that the following AV control unit fuses are not blown.

Are the fuses OK?

YES

>> GO TO 2.

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Disconnect AV control unit connectors M160 and M163. 

2. Check voltage between the AV control unit connectors M160

and M163 and ground.

Are the voltage results as specified?

YES

>> GO TO 3.

NO

>> • Check connector housings for disconnected or loose

terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

Unit

Terminals

Signal name

Fuse No.

AV control unit

19

Battery power

24

7

Ignition switch ACC or ON

17

52

Ignition switch ON or START

3

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M160

7

Ground

0V

Battery 
voltage

Battery 
voltage

19

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

M163

52

Ground

0V

0V

Battery 
voltage

AWNIA1929ZZ