Nissan Murano Z51. Manual - part 211

AV

U1206 GPS

AV-623

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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U1206 GPS

Description

INFOID:0000000005528738

An intermittent error caused by strong radio interference may be detected unless any symptom (GPS recep-
tion error, etc.) occurs. Replace the AV control unit if the malfunction occurs constantly. Refer to 

AV-787,

"Exploded View"

.

DTC Logic

INFOID:0000000005528739

Diagnosis Procedure

INFOID:0000000005528740

1.

PERFORM THE SELF-DIAGNOSIS

1.

Delete the self-diagnosis results. Turn ignition switch OFF.

2.

Turn ignition switch ON. Perform the self-diagnosis again. 

3.

Check that the DTC is detected again.

Is any DTC detected?

YES

>> Replace AV control unit.

NO

>> The intermittent malfunction caused by strong radio interference can be detected.

Part name

Description

AV CONTROL UNIT

• Integrates hard disk drive (HDD) allowing map data and music data to be 

stored.

• It is the master unit of the MULTI AV system, and it is connected to each control 

unit by communication. It operates each system according to communication 
signals from the AV control unit.

• The AV control unit includes the audio, hands-free phone, voice control, navi-

gation, satellite radio, and vehicle information functions.

• It is connected to ECM and combination meter via CAN communication to ob-

tain necessary information for the vehicle information function.

• It is connected to BCM via CAN communication transmitting/receiving for the 

vehicle settings function.

• It inputs the illumination signals that are required for the display dimming con-

trol.

• It inputs the signals for driving status recognition (vehicle speed, reverse and 

parking brake). 

• Update of map data is performed with the CONSULT-III and the applicable ca-

ble.

• It includes the TEL adapter and Bluetooth

™

 function.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Action to take

U1206

GPS RAM
[U1206]

Internal malfunction of AV control unit (GPS malfunction) 
is detected.

An intermittent error caused by strong 
radio interference may be detected 
unless a symptom (GPS reception er-
ror, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.

AV-624

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

U1207 GPS

U1207 GPS

Description

INFOID:0000000005528741

An intermittent error caused by strong radio interference may be detected unless any symptom (GPS recep-
tion error, etc.) occurs. Replace the AV control unit if the malfunction occurs constantly. Refer to 

AV-787,

"Exploded View"

.

DTC Logic

INFOID:0000000005528742

Diagnosis Procedure

INFOID:0000000005528743

1.

PERFORM THE SELF-DIAGNOSIS

1.

Delete the self-diagnosis results. Turn ignition switch OFF.

2.

Turn ignition switch ON. Perform the self-diagnosis again. 

3.

Check that the DTC is detected again.

Is any DTC detected?

YES

>> Replace AV control unit.

NO

>> The intermittent malfunction caused by strong radio interference can be detected.

Part name

Description

AV CONTROL UNIT

• Integrates hard disk drive (HDD) allowing map data and music data to be 

stored.

• It is the master unit of the MULTI AV system, and it is connected to each control 

unit by communication. It operates each system according to communication 
signals from the AV control unit.

• The AV control unit includes the audio, hands-free phone, voice control, navi-

gation, satellite radio, and vehicle information functions.

• It is connected to ECM and combination meter via CAN communication to ob-

tain necessary information for the vehicle information function.

• It is connected to BCM via CAN communication transmitting/receiving for the 

vehicle settings function.

• It inputs the illumination signals that are required for the display dimming con-

trol.

• It inputs the signals for driving status recognition (vehicle speed, reverse and 

parking brake). 

• Update of map data is performed with the CONSULT-III and the applicable ca-

ble.

• It includes the TEL adapter and Bluetooth

™

 function.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Action to take

U1207

GPS RTC
[U1207]

Internal malfunction of AV control unit (GPS malfunction) 
is detected.

An intermittent error caused by strong 
radio interference may be detected 
unless a symptom (GPS reception er-
ror, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.

AV

U1243 DISPLAY UNIT

AV-625

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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U1243 DISPLAY UNIT

Description

INFOID:0000000005528744

DTC Logic

INFOID:0000000005528745

Diagnosis Procedure

INFOID:0000000005528746

1.

CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check front display unit power supply and ground circuit. Refer to 

AV-631, "FRONT DISPLAY UNIT : Diagno-

sis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector and AV control unit connector.

3.

Check continuity between front display unit harness connector and AV control unit harness connector.

4.

Check continuity between front display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK COMMUNICATION SIGNAL

1.

Connect front display unit connector and AV control unit connector.

Part name

Description

FRONT DISPLAY UNIT

• Front display image is controlled by the serial communication from AV control 

unit.

• RGB image signal is input from AV control unit (RGB, RGB area and RGB syn-

chronizing). Auxiliary image signal is input from the auxiliary input jack. Cam-
era image signal is input from camera control unit.

• Synchronize signal (HP, VP) is output to AV control unit.
• Touch panel function can be operated for each system by touching a display 

directly.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1243

FRONT DISP CONN
[U1243]

When either one of the following items are detected:
• serial communication circuits between AV control unit 

and front display unit are malfunctioning.

• serial communication signal between AV control unit 

and front display unit is malfunctioning.

• Front display unit power supply and 

ground circuits.

• Serial communication circuits be-

tween AV control unit and display 
unit.

Front display unit

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M49

11

M146

70

Existed

22

71

Front display unit

Ground

Continuity

Connector

Terminals

M49

11

Not existed

22

AV-626

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

U1243 DISPLAY UNIT

2.

Turn ignition switch ON.

3.

Check signal between front display unit harness connector terminal and ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit.

4.

CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace front display unit.

(+)

(

−

)

Condition

Signal

Front display unit

Connector

Terminal

M49

11

Ground

When adjusting display bright 
ness.

PKIB5039J

(+)

(

−

)

Condition

Signal

Front display unit

Connector

Terminal

M49

22

Ground

When adjusting display bright 
ness.

PKIB5039J