Nissan Xterra. Manual - part 42

AV-160

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

U1229 AV CONTROL UNIT

U1229 AV CONTROL UNIT

DTC Logic

INFOID:0000000009485278

DTC DETECTION LOGIC

CONSULT Display

DTC Detection Condition

Possible Cause

iPod CERTIFICATION
[U1229]

iPod authentication chip error.

Replace AV control unit if malfunction occurs 
constantly.
Refer to 

AV-218, "Removal and Installation"

.

AV

U122F AV CONTROL UNIT

AV-161

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

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U122F AV CONTROL UNIT

DTC Logic

INFOID:0000000009485279

DTC DETECTION LOGIC

CONSULT Display

DTC Detection Condition

Possible Cause

Digital broadcasting connection 
error
[U122F]

Communication error with digital audio broadcast 
module internal to AV control unit.

Replace AV control unit if malfunction occurs 
constantly.
Refer to 

AV-218, "Removal and Installation"

.

AV-162

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

U1244 GPS ANTENNA

U1244 GPS ANTENNA

DTC Logic

INFOID:0000000009485280

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009485281

Regarding Wiring Diagram information, refer to 

AV-135, "Wiring Diagram"

.

1.

GPS ANTENNA INSPECTION

Visually inspect the GPS antenna and antenna feeder. Refer to 

AV-227, "Location of Antenna"

.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning components.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1. Disconnect AV control unit connector M99.

2. Turn ignition switch ON.

3. Check voltage between AV control unit connector M99 and ground.

Is inspection result normal?

YES

>> Replace GPS antenna.

NO

>> Replace AV control unit. Refer to 

AV-218, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

GPS ANTENNA CONN
[U1244]

Open or short to ground is detected in GPS an-
tenna connection.

• GPS antenna disconnection.
• Open or short to ground in GPS antenna signal 

circuit.

AV control unit

Ground

Voltage

Connector

Terminal

M99

50

—

5.0 V

AV

U1258 SATELLITE RADIO ANTENNA

AV-163

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

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U1258 SATELLITE RADIO ANTENNA

DTC Logic

INFOID:0000000009485282

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009485283

Regarding Wiring Diagram information, refer to 

AV-135, "Wiring Diagram"

.

1.

SATELLITE ANTENNA INSPECTION

Visually inspect the satellite antenna and antenna feeder. Refer to 

AV-227, "Location of Antenna"

.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning components.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1. Disconnect AV control unit connector M100.

2. Turn ignition switch ON.

3. Check voltage between AV control unit connector M100 and ground.

Is inspection result normal?

YES

>> Replace satellite radio antenna. Refer to 

AV-230, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-218, "Removal and Installation"

.

CONSULT Display

DTC Detection Condition

Possible Cause

XM ANTENNA CONN
[U1258]

Open or short to ground is detected in satellite 
antenna connection.

• Satellite antenna disconnection.
• Open or short to ground in satellite antenna 

signal circuit.

AV control unit 

Ground

Voltage

Connector

Terminal

M100

58

—

5.0 V