Infiniti FX35, FX50 (S51). Manual — part 64

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-29

< SYSTEM DESCRIPTION >

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• Configuration stored in the AV control unit can be checked.

Vehicle CAN Diagnosis

• CAN communication status and error counter is displayed.
• The error counter displays “OK” if any malfunction was not

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.

• The error counter is erased if “Reset” is pressed.

NOTE:
“???” indicates UNKWN.

AV COMM Diagnosis

• Displays the communication status between AV control unit (mas-

ter unit) and each unit.

• The error counter displays “OK” if any malfunction was not

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.

• The error counter is erased if “Reset” is pressed.

NOTE:
“???” indicates UNKWN.

Delete Unit Connection Log

JSNIA2234ZZ

Items

Display (Current)

Malfunction counter

(Past)

Tx(HVAC)

OK / ???

OK / 0 – 39

Rx(ECM)

OK / ???

OK / 0 – 39

Rx(Cluster)

OK / ???

OK / 0 – 39

Rx(BCM)

OK / ???

OK / 0 – 39

Rx(HVAC)

OK / ???

OK / 0 – 39

Rx(USM)

OK / ???

OK / 0 – 39

Rx(STRG)

OK / ???

OK / 0 – 39

JSNIA2235ZZ

Items

Status

(Current)

Counter

(Past)

C Tx(ITM-PrimarySW)

OK / ???

OK / 0 – 39

C Rx(PrimarySW-ITM)

OK / ???

OK / 0 – 39

C Rx(BTHF-ITM)

OK / ???

OK / 0 – 39

JSNIA2505ZZ

AV-30

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been
removed.)

Initialize Settings

“User Data Initialization” and “Accessory Number Initialization” are
possible.

CAUTION:

• Never perform Accessory Number Initialization except when

configuration is unsuccessful.

• Accessory Number Initialization requires configuration. For

details, refer to

AV-79, "CONFIGURATION (AV CONTROL

UNIT) : Description"

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CONSULT - III Function (MULTI AV)

INFOID:0000000005527812

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 Results Display Item

JSNIA0154GB

JSNIA2237ZZ

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.

Work Support

Steering angle sensor can be adjusted.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing AV control unit.

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.

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-31

< SYSTEM DESCRIPTION >

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Error item

Description

Possible malfunction factor/Action to take

CAN COMM CIRCUIT [U1000]

CAN communication malfunction is de-
tected.

Refer to

AV-82, "Diagnosis Procedure"

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CONTROL UNIT (CAN) [U1010]

CAN initial diagnosis malfunction is de-
tected.

Replace the AV control unit if the malfunc-
tion occurs constantly.

CONTROL UNIT (AV) [U1310]

AV communication circuit initial diagnosis
malfunction is detected.

Cont Unit [U1200]

AV control unit malfunction is detected.

CAN CONT [U1216]

SUB CPU CONN [U1228]

iPod CERTIFICATION [U1229]

Built-in AUDIO CONN [U122E]

USB CONTROLLER [U1225]

USB connection malfunction is detected.

Check that the connection to the USB con-
nector is normal.

DSP CONN [U121D]

AV control unit malfunction is detected.

• If a disc can be played, then there is a

possibility of the detection of a tempo-
rary malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.

DSP COMM [U121E]

CONFIG UNFINISH [U122A]

The writing of configuration data is incom-
plete.

Write configuration data with CONSULT-
III.

ST ANGLE SEN CALIB [U1232]

Predictive course line center position ad-
justment of the steering angle sensor is in-
complete.

Adjust the predictive course line center
position of the steering angle sensor.
Refer to

BRC-9, "ADJUSTMENT OF

STEERING ANGLE SENSOR NEUTRAL
POSITION : Special Repair Requirement"

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FRONT DISP CONN [U1243]

When either one of the following items is
detected:
• Front display unit power supply and

ground circuits malfunction is detected.

• Communication circuits between AV

control unit and front display unit.

• Front display unit power supply and

ground circuits.

• Communication circuits between AV

control unit and front display unit.

SAT CONN [U1255]

When either one of the following items is
detected:
• satellite radio tuner power supply and

ground circuit malfunction is detected.

• malfunction is detected in communica-

tion circuits between AV control unit and
satellite radio tuner.

• malfunction is detected in request sig-

nal circuit between AV control unit and
satellite 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.

USB OVERCURRENT [U1263]

Detection of overcurrent in USB connec-
tor.

Check USB harness between the AV con-
trol unit and USB connector.

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

When either one of the following items is
detected:
• multifunction switch power supply and

ground circuits are malfunctioning.

• AV communication circuits between AV

control unit and multifunction switch are
malfunctioning.

• Multifunction switch power supply and

ground circuits.

• AV communication circuits between AV

control unit and multifunction switch.

AV-32

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

DATA MONITOR

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.

WORK SUPPORT

Adjusts the neutral position of the steering angle sensor.

CAUTION:

For vehicles with VDC, adjust the steering angle sensor neutral position on the ABS actuator control
unit side.

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

When either one of the following items is
detected:
• TEL adapter unit power supply and

ground circuits are malfunctioning.

• AV communication circuits between AV

control unit and TEL adapter unit are
malfunctioning.

• TEL adapter unit power supply and

ground circuits.

• AV communication circuits between AV

control unit and TEL adapter unit.

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

Malfunction is detected in AV communica-
tion circuits between AV control unit and
multifunction switch.

AV communication circuits between AV
control unit and multifunction switch.

Error item

Description

Possible malfunction factor/Action to take

Display Item

Display

Vehicle status

Remarks

VHCL SPD SIG

On

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

On

Parking brake is applied.

Off

Parking brake is released.

ILLUM SIG

On

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

On

Ignition switch ON

Off

Ignition switch in ACC position

REV SIG

On

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

Item

Description

ST ANGLE SENSOR ADJUSTMENT

Adjusts the neutral position of the steering angle sensor.