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Infiniti G35 (V35) Sedan. Manual - part 144

AV-348

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

Error item

Description

Possible malfunction factor/Action to take

CAN COMM CIRCUIT[U1000]

CAN communication malfunction is detect-
ed

Perform diagnosis with CONSULT-III, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to

AV-347, "CONSULT - III Function"

CONTROL UNIT (CAN) [U1010]

CAN initial diagnosis malfunction is detect-
ed

Replace the AV control unit

CONTROL UNIT (AV) [U1310]

AV communication circuit initial diagnosis
malfunction is detected

Control Unit FLASH-ROM [U1200]

AV control unit malfunction is detected

Gyro NO CONN [U1201]

CAN CONT [U1216]

BLUETOOTH CONN [U1217]

HDD CONN [U1218]

HDD READ [U1219]

XM SERIAL COMM [U1220]

HDD WRITE [U121A]

HDD COMM [U121B]

HDD ACCESS [U121C]

DSP CONN [U121D]

DSP COMM [U121E]

INTERNAL COMM [U121F]

AV control unit power supply and ground
circuit

GPS COMM [U1204]

GPS malfunction is detected

An intermittent error caused by strong radio
interference may be detected unless any
symptoms (GPS reception error, etc.) oc-
cur.
Replace the AV control unit ff the malfunc-
tion occurs constantly.

GPS ROM [U1205]

GPS RAM [U1206]

GPS RTC [U1207]

FRONT DISP CONN [U1243]

• Display unit power supply and ground

circuit malfunction is detected

• Malfunction is detected on communica-

tion circuit between display unit and AV
control unit

• Malfunction is detected on communica-

tion signal between display unit and AV
control unit

• Display unit power supply and ground

circuit

• Communication circuit between display

unit and AV control unit

GPS ANTENNA CONN [U1244]

GPS antenna connection malfunction is de-
tected

GPS antenna

XM ANTENNA CONN [U1258]

Poor connection is detected in satellite ra-
dio antenna

Satellite radio antenna

CAMERA CONT. CONN [U1250]

A malfunction is detected in Camera-con-
nection recognition signal circuit

Camera-connection recognition signal cir-
cuit

CD CHANGER [N-BUS] [U124C]

• A malfunction is detected in CD changer

power supply and ground circuits

• A malfunction is detected in communica-

tion circuit between AV control unit and
CD changer (REQ1 signal or communi-
cation signal)

• A malfunction is detected in communica-

tion signal between AV control unit and
CD changer (REQ1 signal or communi-
cation signal)

• CD changer power supply and ground

circuits

• Communication between AV control unit

and CD changer (REQ1 signal or com-
munication signal)

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-349

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

DATA MONITOR

ALL SIGNALS

• Displays the status of the following vehicle signals inputted to the AV control unit.
• For each signal, actual signal can be compared with the condition recognized on the system.

SELECTION FROM MENU

Allows the technician to select which vehicle signals should be displayed and displays the status of the
selected vehicle signals.

• AV COMM CIRCUIT [U1300]
• SWITCHE CONN [U1240]

• Multifunction switch power supply and

ground circuit malfunction is detected

• A malfunction is detected in AV commu-

nication circuit between AV control unit
and multifunction switch

• A malfunction is detected in AV commu-

nication signal between AV control unit
and multifunction switch

• Multifunction switch power supply and

ground circuits

• AV communication circuit between AV

control unit and multifunction switch

• AV COMM CIRCUIT [U1300]
• REAR CAMERA LAN CONN [U1252]

• A malfunction is detected in camera con-

trol unit power supply and ground circuits

• Malfunction is detected on AV communi-

cation signal between Camera control
unit and AV control unit

Camera control unit power supply and
ground circuits

• AV COMM CIRCUIT [U1300]
• CAMERA CONT. CONN [U1250]
• REAR CAMERA LAN CONN [U1252]

• Malfunction is detected on AV communi-

cation circuit between camera control
unit and AV control unit

• Malfunction is detected on AV communi-

cation signal between camera control
unit and AV control unit

AV communication circuit between camera
control unit and AV control unit

Error item

Description

Possible malfunction factor/Action to take

Display Item

Dis-
play

Vehicle status

Remarks

VHCL SPD SIG

Vehicle speed >0 km/h (0 MPH)

Changes in indication may be delayed. This is
normal.

OFF

Vehicle speed =0 km/h (0 MPH)

PKB SIG

Parking brake is applied.

OFF

Parking brake is released.

ILLUM SIG

Block the light beam from the auto
light optical sensor when the light
SW is ON.

—

OFF

Expose the auto light optical sensor
to light when the light SW is OFF or
ON.

IGN SIG

Ignition switch ON

OFF

Ignition switch in ACC position

REV SIG

Selector lever in R position

Changes in indication may be delayed. This is
normal.

OFF

Selector lever in any position other
than R

Item to be selected

Description

VHCL SPD SIG

The same as when “ALL SIGNALS”
is selected.

PKB SIG

ILLUM SIG

IGN SIG

REV SIG

AV-350

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV communication monitor

AV&NAVI C/U

• Displays the communication status from AV control unit to each unit as well as the error counter.
• The error counter displays “OK” if no malfunction was detected in the past and displays “0” if a malfunction is

detected. It increases by 1 if the condition is normal at the next ignition switch ON cycle. The upper limit of
the counter is 39.

AUDIO

• Displays the AV control unit communication status and the error counter.
• The error counter displays “OK” if no malfunction was detected in the past and displays “0” if a malfunction is

detected. It increases by 1 if the condition is normal at the next ignition switch ON cycle. The upper limit of
the counter is 39.

ECU PART NUMBER

The part number of AV control unit is displayed.

Items

Display (Current)

Malfunction

counter

(Past)

TRANSMIT DIAG

OK / UNKWN

OK / 0 – 39

PANEL SWITCH

OK/ UNKWN

OK / 0 – 39

SW SECONDARY

—

RR CONTROL SW

—

STEERING SW

OK / UNKWN

OK / 0 – 39

AUDIO

OK / UNKWN

OK / 0 – 39

SPEAKER AMP

OK / UNKWN

OK / 0 – 39

SIDE CAMERA

—

REAR CAMERA

OK / UNKWN

TV TUNER

—

DVD PLAYER

—

VIDEO DIST

—

ETC

—

HANDS FREE

—

OK/ UNKWN

OK / 0 – 39

IPOD

—

FM MULTI

—

REMOTE CONT

—

Items

Display (Current)

Malfunction

counter

(Past)

TRANSMIT DG

OK / UNKWN

OK / 0 – 39

SPEAKER AMP

—

TV TUNER

—

DVD PLAYER

—

MD DECK

—

CD CHANGER

—

MD CHANGER

—

IPOD

—

U1000 CAN COMM CIRCUIT

AV-351

< COMPONENT DIAGNOSIS >

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COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000000964782

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each
control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to

LAN-28, "CAN Communication Signal Chart"

DTC Logic

INFOID:0000000000964783

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000964784

PERFORM SELF DIAGNOSTIC

Turn ignition switch ON and wait for 2 second or more.

Check “Self Diagnostic Result” of “MULTI AV”.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to “LAN system”. Refer to