Infiniti G35 (V35) Sedan. Manual - part 150

AV-372

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

U1243 DISPLAY UNIT

Is inspection result OK?

YES

>> GO TO 4.

NO

>> Replace AV control unit.

4.

CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector terminal 22 and ground.

Is inspection result OK?

YES

>> INSPECTION END

NO

>> Replace display unit.

11 - Ground

PKIB5039J

22 - Ground

PKIB5039J

AV

U1244 GPS ANTENNA

AV-373

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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U1244 GPS ANTENNA

Description

INFOID:0000000000964832

DTC Logic

INFOID:0000000000964833

Diagnosis Procedure

INFOID:0000000000964834

1.

GPS ANTENNA CHECK

Visually check GPS antenna and antenna feeder.

Is inspection result OK?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Disconnect GPS antenna connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit terminal 110 and ground.

Is inspection result OK?

YES

>> INSPECTION END

NO

>> Replace AV control unit.

Part name

Description

GPS ANTENNA

GPS signal is received and sent to AV control unit.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1244

GPS ANETNNA CONN
[U1244]

GPS antenna connection malfunction is detected

GPS antenna disconnection

110 - Ground

: Approx. 5 V

AV-374

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

U124C CD CHANGER

U124C CD CHANGER

Description

INFOID:0000000000964835

DTC Logic

INFOID:0000000000964836

Diagnosis Procedure

INFOID:0000000000964837

1.

CHECK CD CHANGER POWER SUPPLY AND GROUND CIRCUIT

Check CD changer power supply and ground circuit. Refer to 

AV-374, "Diagnosis Procedure"

.

Is inspection result OK?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect CD changer connector and AV control unit connector.

3.

Check continuity between CD changer harness connector terminals 8, 9, 10 and AV control unit harness
connector terminals 76, 93, 77.

4.

Check continuity between CD changer harness connector terminals 8, 9, 10 and ground.

Is inspection result OK?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK REQUEST SIGNAL

1.

Connect CD changer connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between CD changer harness connector terminal 8 and ground.

Part name

Description

CD CHANGER

• Controlled by communication signal, request signal from AV control unit
• Audio signal from CD CHANGER is sent to AV control unit.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Probable malfunction location

U124C

CD CHANGER[N-BUS]
[U124C]

• A malfunction is detected in CD changer power supply 

and ground circuits

• Malfunction occurs in request signal circuit.(Between 

CD changer and AV control unit)

• Malfunction occurs in communication signal circuit.(Be-

tween CD changer and AV control unit)

• Malfunction is detected in request signal or communica-

tion signal.

• CD changer power supply and 

ground circuits

• Request signal circuit (Between CD 

changer and AV control unit)

• Communication signal circuit (Be-

tween CD changer and AV control 
unit)

8 - 76

: Continuity should exist.

9 - 93

: Continuity should exist.

10 - 77

: Continuity should exist.

8, 9, 10 - Ground

: Continuity should not exist.

AV

U124C CD CHANGER

AV-375

< COMPONENT DIAGNOSIS >

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Is inspection result OK?

YES

>> GO TO 4.

NO

>> Replace CD changer.

4.

CHECK COMMUNICATION SIGNAL

Check signal between CD changer harness connector terminal 9 and ground.

Is inspection result OK?

YES

>> INSPECTION END

NO

>> Replace CD changer.

5.

CHECK COMMUNICATION SIGNAL

Check signal between CD changer harness connector terminal 10 and ground.

Is inspection result OK?

YES

>> INSPECTION END

NO

>> Replace AV control unit.

8 - Ground

SKIA9299J

9 - Ground

SKIA9300J

10 - Ground

SKIA9300J