Infiniti FX35, FX50 (S51). Manual - part 102

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-181

< SYSTEM DESCRIPTION >

[NAVIGATION (SINGLE MONITOR)]

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• If there is a malfunction with the GPS antenna circuit board in the AV control unit, the correct date and time

of occurrence may not be able to be displayed.

• Place of the error occurrence is represented by the position of the current location mark at the time an error

occurred. If current location mark has deviated from the correct position, then the place of the error occur-
rence cannot be located correctly.

• The frequency of occurrence is displayed in a count up manner. The actual count up method differs depend-

ing on the error item. 

Count up method A
• The counter resets to 0 if an error occurs when IGN switch is turned ON. The counter increases by 1 if the

condition is normal at a next IGN ON cycle. 

• The counter upper limit is 39. Any counts exceeding 39 are ignored.“ The counter can be reset (no error

record display) with the “Delete log” switch or CONSULT-III.

Count up method B
• The counter increases by 1 if an error occurs when IGN switch is ON. The counter will not decrease even if

the condition is normal at the next IGN ON cycle. 

• The counter upper limit is 50. Any counts exceeding 50 are ignored. “ The counter can be reset (no error

record display) with the “Delete log” switch or CONSULT-III.

Error item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items

Display type of occur-

rence frequency

Error history display item

Count up method A

CAN communication line, control unit (CAN), AV communication line, control unit (AV)

Count up method B

Other than the above

JPNIA1788GB

Error item

Description

Possible malfunction factor/Action to take

CAN COMM CIRCUIT

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-185, "CONSULT - III Function 

(MULTI AV)"

.

AV-182

< SYSTEM DESCRIPTION >

[NAVIGATION (SINGLE MONITOR)]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

CONTROL UNIT (CAN)

CAN initial diagnosis malfunction is detect-
ed.

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

CONTROL UNIT (AV)

AV communication circuit initial diagnosis 
malfunction is detected.

FLASH-ROM Error Of Control Unit

AV control unit malfunction is detected.

Connection Of Gyro

Connection of G Sensor

CAN Controller Memory Error

Bluetooth Module Connection Error

Sub CPU Connection Error

iPod authentification chip error

Audio connection error

DSP Connection Error

AV control unit malfunction is detected.

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

possibility of the detection of a temporary 
malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.

DSP Communication Error

HDD Connection Error

AV control unit malfunction is detected.

• If the music box function has no malfunc-

tions, then there is a possibility of the de-
tection of a temporary malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.

HDD Read Error

HDD Write Error

HDD Communication Error

HDD Access Error

GPS Communication Error

GPS malfunction is detected.

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

GPS ROM Error

GPS RAM Error

GPS RTC Error

Unfinished configuration

The writing of configuration data is incom-
plete.

Write configuration data with CONSULT-III.

USB Controller Communication Error

USB connection malfunction is detected.

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

DVD Mechanism Communication Error

AV control unit malfunction is detected.

• If DVD can be played, then there is a 

possibility of the detection of a temporary 
malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.

Steer. Angle Sensor Calibration

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

Adjust the predictive course line center po-
sition of the steering angle sensor.
Refer to 

AV-185, "CONSULT - III Function 

(MULTI AV)"

.

Front Display Connection Error

When either one of the following items are 
detected:
• front display unit power supply and 

ground circuits malfunction is detected.

• malfunction is detected in communica-

tion circuits between AV control unit and 
front display unit.

• Front display unit power supply and 

ground circuits.

• Communication circuits between AV con-

trol unit and front display unit.

GPS Antenna Error

GPS antenna connection malfunction is de-
tected.

Check the connection of the GPS antenna 
connector.

XM Antenna Connection Error

Satellite radio antenna connection malfunc-
tion is detected.

Satellite radio antenna disconnection.

USB electric current Error

Detection of overcurrent in USB connector.

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

Error item

Description

Possible malfunction factor/Action to take

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-183

< SYSTEM DESCRIPTION >

[NAVIGATION (SINGLE MONITOR)]

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Speaker Test

Select “SPEAKER DIAGNOSIS” to display the Speaker Diagnosis
screen. Press “Start” to generate a test tone in a speaker. Press
“Start” to generate a test tone in the next speaker. Press “Stop” to
stop the test tones.

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:

• AV COMM CIRCUIT
• Switches Connection Error

When either one of the following items are 
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 COMM CIRCUIT
• AVM Connection Error

When either one of the following items are 
detected:
• around view monitor control unit power 

supply and ground circuits are malfunc-
tioning.

• AV communication circuits between mul-

tifunction switch and around view moni-
tor control unit are malfunctioning.

• Around view monitor control unit power 

supply and ground circuits.

• AV communication circuits between mul-

tifunction switch and around view moni-
tor control unit.

• AV COMM CIRCUIT
• AVM Sonar Connection Error

When either one of the following items are 
detected:
• sonar control unit power supply and 

ground circuits are malfunctioning.

• AV communication circuits between AV 

control unit and sonar control unit are 
malfunctioning.

• Sonar control unit power supply and 

ground circuits.

• AV communication circuits between AV 

control unit and sonar control unit.

• AV COMM CIRCUIT
• Switches Connection Error
• AVM Connection Error

AV communication circuits between AV 
control unit and multifunction switch are 
malfunctioning.

AV communication circuits between AV 
control unit and multifunction switch.

Error item

Description

Possible malfunction factor/Action to take

JPNIA1828ZZ

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(HVAC)

OK / ???

OK / 0 – 39

Rx(USM)

OK / ???

OK / 0 – 39

Rx(TPMS)

OK / ???

OK / 0 – 39

Rx(STRG)

OK / ???

OK / 0 – 39

JSNIA2391ZZ

AV-184

< SYSTEM DESCRIPTION >

[NAVIGATION (SINGLE MONITOR)]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

“???” 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

Hands-Free Phone

The hands-free phone reception volume adjustment and microphone
and speaker test functions are also available.

Camera Cont.

Refer to 

AV-189, "On Board Diagnosis Function"

.

Delete Unit Connection Log

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

Items

Status

(Current)

Counter

(Past)

C Tx(ITM–PrimarySW)

OK / ???

OK / 0 – 39

C Rx(PrimarySW–ITM)

OK / ???

OK / 0 – 39

C Rx(AVM–ITM)

OK / ???

OK / 0 – 39

JSNIA2492ZZ

JSNIA2183ZZ

JSNIA2189ZZ