Infiniti EX35. Manual - part 186

AV

U1205 GPS

AV-525

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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U1205 GPS

Description

INFOID:0000000003513814

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

AV-903,

"Removal and Installation"

.

DTC Logic

INFOID:0000000003160671

Diagnosis Procedure

INFOID:0000000003160672

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 HDD (hard disk drive) 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 means of communication. It operates each system according to com-
munication signals from the AV control unit.

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

gation, and vehicle information functions.

• It is connected to ECM and unified meter and A/C amp. via CAN communica-

tion to obtain necessary information for the vehicle information function.

• It inputs the automatic brightness ON/OFF signals that are required for the dis-

play dimming control.

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

parking brake). 

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Action to take

U1205

GPS ROM
[U1205]

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

Replace AV control unit

AV-526

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

U1206 GPS

U1206 GPS

Description

INFOID:0000000003513815

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

AV-903,

"Removal and Installation"

.

DTC Logic

INFOID:0000000003160674

Diagnosis Procedure

INFOID:0000000003160675

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 HDD (hard disk drive) 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 means of communication. It operates each system according to com-
munication signals from the AV control unit.

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

gation, and vehicle information functions.

• It is connected to ECM and unified meter and A/C amp. via CAN communica-

tion to obtain necessary information for the vehicle information function.

• It inputs the automatic brightness ON/OFF signals that are required for the dis-

play dimming control.

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

parking brake). 

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.

Replace AV control unit

AV

U1207 GPS

AV-527

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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U1207 GPS

Description

INFOID:0000000003513816

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

AV-903,

"Removal and Installation"

.

DTC Logic

INFOID:0000000003160677

Diagnosis Procedure

INFOID:0000000003160678

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 HDD (hard disk drive) 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 means of communication. It operates each system according to com-
munication signals from the AV control unit.

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

gation, and vehicle information functions.

• It is connected to ECM and unified meter and A/C amp. via CAN communica-

tion to obtain necessary information for the vehicle information function.

• It inputs the automatic brightness ON/OFF signals that are required for the dis-

play dimming control.

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

parking brake). 

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.

Replace AV control unit

AV-528

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

U1243 DISPLAY UNIT

U1243 DISPLAY UNIT

Description

INFOID:0000000003160679

DTC Logic

INFOID:0000000003160680

Diagnosis Procedure

INFOID:0000000003160681

1.

CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUITS

Check display unit power supply and ground circuits. Refer to 

AV-544, "DISPLAY UNIT : Diagnosis Proce-

dure"

.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION CIRCUITS

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and AV control unit connector.

3.

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

4.

Check continuity between display unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK COMMUNICATION SIGNAL

1.

Connect display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

Part name

Description

DISPLAY UNIT

• 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 the camera control unit.

• Synchronizing 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 is detected.

• Display unit power supply and ground circuit malfunc-

tion is detected

• Malfunction is detected in communication circuits be-

tween display unit and AV control unit

• Display unit power supply and 

ground circuit

• Communication circuits between 

display unit and AV control unit

Display unit

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M75

11

M88

70

Existed

22

71

Display unit

Ground

Continuity

Connector

Terminals

M75

11

Not existed

22