Infiniti G37 Coupe. Manual — part 98

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-145

< FUNCTION DIAGNOSIS >

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CONSULT - III Function (MULTI AV)

INFOID:0000000001558996

CONSULT-III functions

CONSULT-III performs the following functions via the communication with the AV control unit.

AV COMMUNICATION

When “AV communication” of “CAN Diag Support Monitor” is selected, the following function will be performed.

ECU IDENTIFICATION

The part number of AV control unit is displayed.

SELF DIAGNOSIS RESULT

• In CONSULT-III self-diagnosis, self-diagnosis results and error history are displayed collectively.
• The current malfunction indicates “CRNT”. The past malfunction indicates “PAST”.
• The timing is displayed as “0” if any of the error codes [U1000], [U1010], [U1300] and [U1310] is detected.

The counter increases by 1 if the condition is normal at the next ignition switch ON cycle.

Self-diagnosis detection range

Self-diagnosis results display item

Diagnosis mode

Description

Ecu Identification

The part number of AV control unit can be checked.

Self Diagnostic Result

Performs a diagnosis on the AV control unit and a connection diagnosis for the communication
circuit of the Multi AV system, and displays the current and past malfunctions collectively.

Data Monitor

The diagnosis of vehicle signal that is input to the AV control unit can be performed.

AV communication

AV&NAVI C/U

Displays the communication status from AV control unit to each unit as well as the error
counter.

AUDIO

Displays the AV control unit communication status and the error counter.

JSNIA0566GB

AV-146

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

DATA MONITOR

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-145, "CONSULT - III Function

(MULTI AV)"

.

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.

CAN CONT [U1216]

FRONT DISP CONN [U1243]

• Display unit power supply and ground

circuit malfunction is detected.

• Malfunction is detected in communica-

tion circuit between AV control unit and
display unit.

• Malfunction is detected in communica-

tion signal between AV control unit and
display unit.

• Display unit power supply and ground

circuit.

• Communication circuit between AV con-

trol unit and display unit.

SAT CONN [U1255]

• Satellite radio tuner power supply and

ground circuit malfunction is detected.

• Malfunction is detected in communica-

tion signal between AV control unit and
satellite radio tuner.

• Malfunction is detected in communica-

tion circuit between AV control unit and
satellite radio tuner.

• Malfunction is detected in request signal

circuit between AV control unit and satel-
lite radio tuner.

• Satellite radio tuner power supply and

ground circuit.

• Communication circuit between AV con-

trol unit and satellite radio tuner.

• Request signal circuit between AV con-

trol unit and satellite radio tuner.

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

• Multifunction switch power supply and

ground circuit malfunction is detected.

• Malfunction is detected in AV communi-

cation circuit between AV control unit and
multifunction switch.

• Malfunction is detected in AV communi-

cation signal between AV control unit and
multifunction switch.

• Multifunction switch power supply and

ground circuit.

• AV communication circuit between AV

control unit and multifunction switch.

• AV COMM CIRCUIT [U1300]
• IPod CONN [U1254]

• iPod adapter power supply and ground

circuit malfunction is detected.

• Malfunction is detected in AV communi-

cation circuit between AV control unit and
iPod adapter.

• Malfunction is detected in AV communi-

cation signal between AV control unit and
iPod adapter.

• iPod adapter power supply and ground

circuit.

• AV communication circuit between AV

control unit and iPod adapter.

• AV COMM CIRCUIT [U1300]
• HAND FREE CONN [U1256]

• TEL adapter unit power supply and

ground circuit malfunction is detected.

• Malfunction is detected in AV communi-

cation circuit between AV control unit and
TEL adapter unit.

• Malfunction is detected in AV communi-

cation signal between AV control unit and
TEL adapter unit.

• TEL adapter unit power supply and

ground circuit.

• AV communication circuit between TEL

adapter unit and AV control unit.

• AV COMM CIRCUIT [U1300]
• SWITCH CONN [U1240]
• IPod CONN [U1254]
• HAND FREE CONN [U1256]

Malfunction is detected in AV communica-
tion circuit between AV control unit and the
branch point multifunction switch and AV
control unit.

AV communication circuit between AV con-
trol unit and the branch point multifunction
switch and AV control unit.

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-147

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ALL SIGNALS

• Displays the status of the following vehicle signals inputted into 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.

Display Item

Dis-
play

Vehicle status

Remarks

VHCL SPD SIG

On

Vehicle speed >0 km/h (0 MPH)

Changes in indication may be delayed. This is nor-
mal.

Off

Vehicle speed =0 km/h (0 MPH)

PKB SIG

On

Parking brake is applied.

Off

Parking brake is released.

ILLUM SIG

On

Light switch ON

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Off

Light switch OFF

IGN SIG

On

Ignition switch ON

Off

Ignition switch in ACC position

REV SIG

On

Shift the selector lever to “R” position

Changes in indication may be delayed. This is nor-
mal.

Off

Shift the selector lever other than “R”
position

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-148

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

DIAGNOSIS SYSTEM (TEL ADAPTER UNIT)

DIAGNOSIS SYSTEM (TEL ADAPTER UNIT)

Diagnosis Description

INFOID:0000000001558997

HANDS-FREE PHONE SYSTEM ON BOARD DIAGNOSIS

During on board diagnosis the diagnosis function of TEL adapter unit starts with the operation of the steering
switch and performs the diagnosis when ignition switch ACC.

On board diagnosis item

The on board diagnosis has 3 modes: the self-diagnosis mode that performs the trouble diagnosis, the
speaker adaptation data deleting mode and the hands-free phone system initialization mode.

CAUTION:

• Perform the diagnosis with the vehicle stopped.
• Perform STEP2 if necessary.

Self-diagnosis results

Self-diagnosis mode reads out the self-diagnosis results and indicates DTC on the display.
NOTE:
• Error count is read out simultaneously when reading out the DTC name.
• The errors are read out continuously when some errors occur at the same time. The DTC displays are com-

bined and displayed. For example, DTC 01100 is displayed when DTC 01000 and DTC 00100 are indicated
at the same time.

Self-diagnosis results

The details of error count

The error count guides “0” when the error occurs. The next time it counts up “1” if it is normal with the ignition
switch ON. It continues the count up unless the initialization of hands-free phone system is performed.

STEP

MODE

Description

STEP1

Self-diagnosis

The self-diagnosis mode performs the microphone test and
the diagnosis of TEL adapter unit, TEL antenna and steering
unit, and then reads out the results with the sound and indi-
cates them on the display.

STEP2

Speaker adaptation data deleting

The speaker adaptation data deleting mode can delete the
speaker adaptation data.

Hands-free phone system initialization

Hands-free phone system initialization mode can perform
the initialization of hands-free phone system.

DTC

DTC name

Possible causes

DTC 10000

INTERNAL FAILURE

TEL adapter unit

DTC 01000

ANT. SHORT TO BATT OR OPEN

TEL antenna

DTC 00100

ANT. SHORT TO GROUND

DTC 00010

STEERING REMOTE BUTTON STUCK A

Steering switch

DTC 00001

STEERING REMOTE BUTTON STUCK B

DTC 00000

THERE ARE NO FAILURE RECORDS TO REPORT

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