Nissan Pathfinder. Manual - part 118

AV

U1255 SATELLITE RADIO TUNER

AV-299

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

C

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B

A

O

P

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit. Refer to 

AV-365, "Removal and Installation"

.

4.

CHECK SATELLITE RADIO TUNER VOLTAGE

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M51.

3. Connect satellite radio tuner connector B2.

4. Turn ignition switch ON.

5. Check voltage between satellite radio tuner connector B2 terminal 30 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace satellite radio tuner. Refer to 

AV-384, "Removal and Installation"

.

AV control unit

Ground

Voltage

(Approx.)

(+)

(

−)

Connector

Terminal

M51

100

—

7.0  V

101

Satellite radio tuner

Ground

Voltage

(Approx.)

(+)

(

−)

Connector

Terminals

B2

30

—

7.0 V

AV-300

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

U1263 USB

U1263 USB

DTC Logic

INFOID:0000000009174577

Diagnosis Procedure

INFOID:0000000009174578

1.

CHECK USB INTERFACE HARNESS

Visually inspect USB interface harness.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace USB interface harness. Refer to 

AV-380, "Removal and Installation"

.

2.

CHECK USB INTERFACE HARNESS CONTINUITY

Check USB interface harness continuity. Refer to 

AV-300, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-365, "Removal and Installation"

.

NO

>> Replace USB interface harness. Refer to 

AV-380, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

USB OVERCURRENT
[U126]

Overcurrent in USB connector is detected.

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

AV

U1264 ANTENNA AMP.

AV-301

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

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U1264 ANTENNA AMP.

DTC Logic

INFOID:0000000009174579

Diagnosis Procedure

INFOID:0000000009174580

Regarding Wiring Diagram information, refer to 

AV-242, "Wiring Diagram"

.

1.

CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND ANTENNA BASE

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M155 and antenna base connector M502.

3. Check continuity between AV control unit connector M155 and antenna base connector M502.

4. Check continuity between AV control unit connector M155 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK AV CONTROL UNIT VOLTAGE

1. Connect AV control unit connector M155.

2. Turn ignition switch ON.

3. Check voltage between AV control unit connector M155 and ground.

Is the inspection result normal?

YES

>> Replace antenna base. Refer to 

AV-389, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-365, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

ANTENNA AMP TERMINAL
[U1264]

Antenna amp. ON signal circuit open or short cir-
cuited.

Antenna amp. ON signal circuit between AV con-
trol unit and antenna amp.

AV control unit

Antenna base

Continuity

Connector

Terminal

Connector

Terminal

M155

126

M502

1

Yes

AV control unit

Ground

Continuity

Connector

Terminal

M155

126

—

No

AV control unit

Ground

Voltage

(Approx.)

(+)

(–)

Connector

Terminal

M155

126

—

Battery voltage

AV-302

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

U1265 BOSE AMP.

U1265 BOSE AMP.

DTC Logic

INFOID:0000000009174581

Diagnosis Procedure

INFOID:0000000009174582

Regarding Wiring Diagram information, refer to 

AV-242, "Wiring Diagram"

.

1.

CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND BOSE SPEAKER AMP.

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M143 and Bose speaker amp. connector B130.

3. Check continuity between AV control unit connector M143 and Bose speaker amp. connector M130.

4. Check continuity between AV control unit connector M122 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK AV CONTROL UNIT VOLTAGE

1. Connect AV control unit connector M143.

2. Turn ignition switch ON.

3. Check voltage between AV control unit connector M143 and ground.

Is the inspection result normal?

YES

>> Replace Bose speaker amp. Refer to 

AV-372, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-365, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

AMP ON TERMINAL
[U1265]

BOSE amp. ON signal circuit open or short cir-
cuited.

BOSE amp. ON signal circuit between AV control 
unit and BOSE speaker amp.

AV control unit

Bose speaker amp.

Continuity

Connector

Terminal

Connector

Terminal

M143

110

B130

60

Yes

AV control unit

Ground

Continuity

Connector

Terminal

M143

110

—

No

AV control unit

Ground

Voltage

(Approx.)

(+)

(–)

Connector

Terminal

M143

110

—

Battery voltage