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Nissan Pathfinder (2010 year). Manual - part 47

U1200 AV CONTROL UNIT

AV-183

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1200 AV CONTROL UNIT

Description

INFOID:0000000005259397

Replace the AV control unit if this DTC is displayed. Refer to

AV-289, "Removal and Installation"

DTC Logic

INFOID:0000000005259398

Part name

Description

AV CONTROL UNIT

• 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.

• AV control unit includes audio function and vehicle information function.
• It is connected to ECM and combination meter via CAN communication to ob-

tain 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

U1200

Control Unit
FLASH- ROM
[U1200]

An internal malfunction is detected in AV control unit
(FLASH-ROM).

Replace AV control unit. Re-
fer to

AV-289, "Removal and

Installation"

2010 Pathfinder

AV-184

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1216 AV CONTROL UNIT

U1216 AV CONTROL UNIT

Description

INFOID:0000000005259399

Replace the AV control unit if this DTC is displayed. Refer to

AV-289, "Removal and Installation"

DTC Logic

INFOID:0000000005259400

Part name

Description

AV CONTROL UNIT

• 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.

• AV control unit includes audio function and vehicle information function.
• It is connected to ECM and combination meter via CAN communication to ob-

tain 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

U1216

CAN CONT
[U1216]

Internal malfunction of AV control unit (CAN controller) is
detected.

Replace AV control unit.
Refer to

AV-289, "Remov-

al and Installation"

2010 Pathfinder

U1240 SWITCH CONN

AV-185

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1240 SWITCH CONN

Description

INFOID:0000000005259401

U1240 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-III

DTC Detection Condition

Possible causes

U1240

• SWITCH CONN

[U1240]

• A/C and AV switch assembly power supply and ground

circuit malfunction is detected

• A malfunction is detected in communication circuit be-

tween AV control unit and A/C and AV switch assembly

• A malfunction is detected in communication signal be-

tween AV control unit and A/C and AV switch assembly

• A/C and AV switch assembly power

supply and ground circuits

• Communication circuit between AV

control unit and A/C and AV switch
assembly

2010 Pathfinder

AV-186

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1243 DISPLAY UNIT

U1243 DISPLAY UNIT

Description

INFOID:0000000005259402

DTC Logic

INFOID:0000000005259403

Diagnosis Procedure

INFOID:0000000005259404

Regarding Wiring Diagram information, refer to

AV-245, "Wiring Diagram"

CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuit. Refer to

AV-194, "DISPLAY UNIT : Diagnosis Procedure"

Is inspection result OK?

YES

>> GO TO 2

>> Repair malfunctioning parts.

CHECK CONTINUITY OF COMMUNICATION CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector and AV control unit connector.

3. Check continuity between display unit harness connector M93

(A) terminals 11, 22 and AV control unit harness connector M45

(B) terminals 56, 44.

4. Check continuity between display unit harness connector M93

(A) terminals 11, 22 and ground.

Are continuity results as specified?

YES

>> GO TO 3

Part name

Description

DISPLAY UNIT

• Display image is controlled by the serial communication from AV control unit.
• Inputs the RGB image signal (RGB, RGB area and RGB synchronizing) from

AV control unit and the auxiliary image signal from the auxiliary input jacks.

• Outputs the synchronizing signals (HP and VP) to the AV control unit.

DTC

Display contents of

CONSULT-III

DTC Detection Condition

Possible causes

U1243

FRONT DISP CONN
[U1243]

• Display unit power supply and ground circuit malfunc-

tion is detected

• Malfunction is detected on communication circuit be-

tween display unit and AV control unit

• Malfunction is detected on communication signal be-

tween display unit and AV control unit

• Display unit power supply and

ground circuit

• Communication circuit between

display unit and AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M93

M45

Yes

—

Continuity

Connector

Terminal

M93

Ground

ALNIA0310GB

2010 Pathfinder

U1243 DISPLAY UNIT

AV-187

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

>> Repair harness or connector.

CHECK COMMUNICATION SIGNAL

1. Connect display unit connector and AV control unit connector.

2. Turn ignition switch ON.

3. Check signal between display unit harness connector M93 ter-

minal 11 and ground with an oscilliscope or CONSULT-III.

Are voltage readings as specified?

YES

>> GO TO 4

>> Replace AV control unit. Refer to

AV-289, "Removal and Installation"

CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector M93 terminal

22 and ground with an oscilliscope or CONSULT-III.

Are voltage readings as specified?

YES

>> Inspection End.

>> Replace display unit. Refer to

AV-289, "Removal and Installation"

(+)

(-)

Reference signal

Connector

Terminal

M93

Ground

ALNIA0311GB

PKIB5039J

(+)

(-)

Reference signal

Connector

Terminal

M93

Ground

ALNIA0312GB

PKIB5039J

2010 Pathfinder

AV-188

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1248 DVD DECK CONN

U1248 DVD DECK CONN

Description

INFOID:0000000005259405

U1248 is indicated when a malfunction occurs in the communication signal of the DVD player. Indicated simul-

taneously, 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.

DTC Logic

INFOID:0000000005259406

Diagnosis Procedure

INFOID:0000000005259407

CHECK DVD PLAYER POWER SUPPLY AND GROUND CIRCUIT

Check DVD player power supply and ground circuit. Refer to

AV-200, "DVD PLAYER : Diagnosis Procedure"

Is inspection result OK?

YES

>> Inspection End.

>> Repair malfunctioning parts.

DTC

Display contents of

CONSULT-III

DTC Detection Condition

Possible causes

U1248

DVD DECK CONN
[U1248]

• DVD player power supply and ground circuit

malfunction is detected

• Malfunction is detected on communication circuit

between DVD player and AV control unit

• Malfunction is detected on communication signal

between DVD player and AV control unit

• DVD player power supply and

ground circuit

• Communication circuit be-

tween DVD player and AV
control unit

2010 Pathfinder

U1255 SATELLITE RADIO TUNER

AV-189

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1255 SATELLITE RADIO TUNER

Description

INFOID:0000000005259408

DTC Logic

INFOID:0000000005259409

Diagnosis Procedure

INFOID:0000000005259410

CHECK SATELLITE RADIO TUNER POWER SUPPLY AND GROUND CIRCUIT

Check satellite radio tuner power supply and ground circuit. Refer to

AV-198, "SATELLITE RADIO TUNER :

Diagnosis Procedure"

Is inspection result OK?

YES

>> Inspection End.

>> Repair malfunctioning parts.

Part name

Description

SATELLITE RADIO TUNER

• Inputs the satellite radio signal from satellite radio antenna and outputs it to

the AV control unit.

• It is controlled with the communication (communication signal, request sig-

nal) from AV control unit.

DTC

Display contents of

CONSULT-III

DTC Detection Condition

Possible causes

U1255

SAT CONN
[U1255]

The satellite radio tuner power supply and ground circuit
malfunction is detected

Satellite radio tuner power supply and
ground circuit

2010 Pathfinder

AV-190

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

U1256 HAND FREE CONN

U1256 HAND FREE CONN

Description

INFOID:0000000005259411

U1256 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-III

DTC Detection Condition

Possible causes

U1256

• HAND FREE CONN

[U1256]

• Bluetooth control unit power supply and ground circuit

malfunction is detected

• A malfunction is detected in communication circuit be-

tween AV control unit and Bluetooth control unit

• A malfunction is detected in communication signal be-

tween AV control unit and Bluetooth control unit

• Bluetooth control unit power supply

and ground circuits

• Communication circuit between AV

control unit and Bluetooth control
unit

2010 Pathfinder

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