sensor INFINITI QX56 2011 Factory Workshop Manual

AV-24
< SYSTEM DESCRIPTION >
SYSTEM
Birds-Eye view display area
Camera Image Operation Principle
 If the information writing to around view monitor control unit and the information from the camera are not
matched, the applicable camera position is indicated as an error on the Birds-Eye view display. (Calibration
operation is necessary when replacing each camera or when replacing around view monitor control unit.)
 Around view monitor control unit receives the camera switch signal from AV control unit via AV communica-
tion by pressing the “CAMERA” switch of multifunction switch.
 Around view monitor control unit that receives the ca mera switch signal supplies the power to each camera
and inputs the camera image from each camera.
 When the selector lever is in the reverse position, around view monitor control unit receives the reverse sig- nal, supplies the power to each camera, and inputs the camera image from each camera.
 Around view monitor control unit that receives the camera image signal from each camera cuts out the
required screen for each view, superimposes the camera image, vehicle icon, guiding lines, sonar indicator,
and outputs them to the front display unit.
CAMERA ASSISTANCE SONAR FUNCTION
 Install the corner sensor on the front bumper and r ear bumper. It detects the obstacles around the vehicle
when the around view monitor is displayed. It warn s of the approach to the obstacles with the buzzer and
indicator in the display linked with the around view monitor system.
 It displays the distance between the bumper and obstacle with the color of sonar indicator in the display and the blinking cycle of indicator in 3 stages.
 The buzzer warns of the distance to the obstacles with the cycle in 3 stages.
System Operation Description
 Around view monitor control unit transmits the sonar operation signal via AV communication to sonar control
unit to control the operation of sonar indicator and sonar buzzer.
 Sonar control unit that receives the sonar operation signal from around view monitor control unit transmits
the detection signal and detection distance signal according to the signal from corner sensor via AV commu-
nication to around view monitor control unit. Around vi ew monitor control unit operates the applicable sonar
indicator.
 When receiving a sonar operation signal from the around view monitor control unit, the sonar control unit
converts a signal transmitted from the corner sensor into a detection distance signal and transmits it to the
AV control unit via AV communication. When receivi ng the detection signal, the AV control unit activates
each speaker via BOSE amp.
JSNIA0775GB
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AV
SYSTEMAV-25
< SYSTEM DESCRIPTION >
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 Sonar control unit has the diagnosis function. It can det ect the corner sensor malfunction or sensor harness
open circuit. It transmits the diagnosis results to around view monitor control unit and always displays the
sonar indicator in red to inform the user.
Obstacle Detection Distance
 Sonar control unit changes the outputs of the sonar indicator and warning buzzer in 3 stages according to
the obstacle detection distance from the corner sensor.
 The sonar control unit can change the setting of obstacle detection distance in 4 stages.
Obstacle detection image
Detection distance
Sonar Indicator Display
 Around view monitor control unit that receives t he detection signal and detection distance signal from sonar
control unit displays the sonar indicator on display.
 Around view monitor control unit changes the color or bl inking cycle of the indicator according to the detec-
tion distance.
JSNIA2986ZZ
A. Approx. 50 cm (19.6 in) B. Approx. 15 cm (5.9 in)
Warning item Sensitivity level 1
(Fastest warning) Sensitivity level 2
(Faster warning) Sensitivity level 3
(Default value) Sensitivity level 4
(Slower warning)
First stage
warning 70 – 80 cm (27.5 – 31.4 in) 60 – 70 cm (23.6 – 27.5 in) 50 – 60 cm (19.6 – 23.6 in) 40 – 50 cm (15.7 – 19.6 in)
Second stage
warning 50 – 70 cm (19.6 – 27.5 in) 40 – 60 cm (15.7 – 23.6 in) 30 – 50 cm (11.8 – 19.6 in) 30 – 40 cm (11.8 – 15.7 in)
Third stage
warning Less than 50 cm (19.6 in) Less than 40 cm (15.7 in) Less than 30 cm (11.8 in) Less than 30 cm (11.8 in)
Revision: 2010 May2011 QX56

AV-26
< SYSTEM DESCRIPTION >
SYSTEM
Color and blinking cycle of sonar indicator
Sonar Buzzer Operation
 Each sonar sensor transmits a sensor signal to the sonar control unit when detecting an obstacle.
 The sonar control unit converts a signal received from each sonar sensor into distance and transmits detec-
tion distance signal to the AV control unit via AV communication.
 The AV control unit transmits a buzzer signal to t he BOSE amp. corresponding to each sonar sensor based
on the received signal.
 When receiving a buzzer signal, the BOSE amp. trans mits the buzzer signal to the each speaker. When
each speaker receives a buzzer signal, a buzzer sounds.
 When the front corner sensor detects an obstacle, a buzzer is heard from the speakers on the front side.
 When the rear corner sensor detects an obstacle, a buzzer is heard from the speakers on the rear side.
 It changes the buzzer cycle in 3 stages according to the detection distance.
Sonar buzzer cycle
VEHICLE INFORMATION FUNCTION
 Status of audio, climate control system, fuel economy, maintenance and navigation are displayed.
 AV control unit displays the fuel consumption status while receiving data signal through CAN communication from ECM and combination meter.
 AV control unit is connected to BCM via CAN communica tion transmitting/receiving for the vehicle settings
function.
AUTO LIGHT ADJUSTMENT SYSTEM
JSNIA3149GB
JSNIA3150GB
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AV
SYSTEMAV-27
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When the light switch is in the 1st or 2nd position, the dimming of the display is judged according to a dimming
signal transmitted from BCM to the AV control unit. Dis play illuminance is independent of vehicle exterior illu-
minance detected by the auto light detecting sensor ev en when the light switch is in 1st or 2nd position.
MULTI AV SYSTEM : Fail-SafeINFOID:0000000006216217
When the ambiance temperature becomes extremely low or extremely high, AV control unit displays the mes-
sage and limits the AV control unit function.
FAIL-SAFE CONDITIONS
When the ambiance temperature is −20 °C ( −4 °F) or lower, or when it is 70 °C (158 °F) or higher
Display
The messages displayed on fail-safe conditions are as shown below:
DESCRIPTION OF CONTROLS
Ability Operation Mode
There is an ability operation mode for Fail-safes due to low or high ambiance temperature.
If HDD data can be read, fail-safe is shown, then normal displays are displayed only for functions which can be
operated.
RELEASE CONDITIONS OF FAIL-SAFE
Fail-safe is released on following conditions and normal mode is restored.
When The Temperature of HDD Is Low or High
If the ambient temperature becomes out of fa il-safe condition range, normal mode is restored.
Fail-safe mode Display (display of the fail-safe condition)
When HDD temperature is low HDD system is experienci
ng problems due to extreme low temperature.
Normal operation will resume when temperature rises.
When HDD temperature is high HDD system is experienci
ng problems due to extreme high temperature.
Normal operation will resume when temperature drops.
Function When Fail-safe Function is activated
Air conditioner Operation Only multifunction switch (preset switch) can be operated.
Display
 LED of multifunction switch (preset switch) illuminates.
 Aimed temperature, blow angle, and flow rate are displayed in simplified mode.
Audio Operation Only ON/OFF and volume control operations by multifunction switch (preset switch) are possible.
Display No display (“Fail-safe mode” is displayed)
Camera Operation Image tone cannot be controlled.
Display Cannot be superimposed. (warning display, tone control display)
Hands-free phone Operation Cannot be operated.
Navigation Operation Cannot be operated.
Self diagnosis The display in simplified mode of fail-safe condition
CONSULT-III diagnosis Cannot be operated.
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AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-31
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SELF-DIAGNOSIS RESULTS
Check the applicable display at the following table, and then repair the malfunctioning parts.
Only Unit Part Is Displayed In Red.
A Connecting Cable Between Units Is Displayed In Yellow.
CONFIRMATION/ADJUSTMENT MODE
Screen switch Description Possible malfunction location / Action to
take
Control Unit Malfunction is detected in AV control unit
power supply and ground circuits.Check AV control unit power supply and
ground circuits. When detecting no mal-
function in those components, replace AV
control unit.
Area with yellow connection lines Description
Possible malfunction location / Action to
take
Control unit ⇔ Front Display Serial communication circuits between AV
control unit and front display unit are mal-
functioning. Serial communication circuits between AV
control unit and front display unit.
Control unit ⇔ GPS Antenna GPS antenna connection malfunctions de-
tected. Check the connection of the GPS antenna
connector.
Control unit ⇔ XM Antenna Satellite radio antenna connection malfunc-
tion is detected.
Satellite radio antenna disconnection
Control unit ⇔ Around view
Around view ⇔ Parking Sensor 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 AV
control unit and around view monitor
control unit are malfunctioning.  Around view monitor control unit power
supply and ground circuits.
 AV communication circuits between AV
control unit and around view monitor
control unit.
Control unit ⇔ Parking Sensor
Around view ⇔ Parking Sensor 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.
Control unit ⇔ Video Dist.(Rear)
Video Dist.(Rear) ⇔ Rear display 2 When either one of the following items are
detected:
 video distributor power supply and
ground circuits are malfunctioning.
 headrest display unit LH power supply and ground circuits are malfunctioning.
 AV communication circuits between AV control unit and headrest display unit LH
are malfunctioning.
 location recognition signal circuit be- tween headrest display unit LH and
ground is malfunctioning.  Video distributor power supply and
ground circuits.
 Headrest display unit LH power supply
and ground circuits.
 AV communication circuits between AV control unit and headrest display unit LH.
 Location recognition signal circuit be- tween headrest display unit LH and
ground.
Video Dist.(Rear) ⇔ Rear display 2 When either one of the following items are
detected:
 headrest display unit RH power supply
and ground circuits are malfunctioning.
 AV communication circuits between headrest display unit LH and headrest
display unit RH are malfunctioning.
 location recognition signal circuit be- tween headrest display unit RH and
ground is malfunctioning.  Headrest display unit RH power supply
and ground circuits.
 AV communication circuits between
headrest display unit LH and headrest
display unit RH.
 Location recognition signal circuit be-
tween headrest display unit RH and
ground.
Revision: 2010 May2011 QX56

AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-33
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A comparison check can be made of each actual vehicle signal and
the signals recognized by the system.
Sp ea ke r Tes t
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.
Navigation
STEERING ANGLE ADJUSTMENT
JSNIA2991ZZ
Diagnosis item Display Vehicle status Remarks
Vehicle speed ON Vehicle speed >= 8 km/h (5 MPH)
Changes in indication may be delayed. This is normal.
OFF Vehicle speed < 8 km/h (5 MPH)
Parking brake ON Parking brake is applied.
OFF Parking brake is released.
Lights ON
Block the light from the auto light
optical sensor when the lighting
switch is 1st or 2nd.
—
OFF Either of the following conditions.
 Lighting switch is OFF
 Expose the auto light optical sen-
sor to light when the lighting
switch is 1st or 2nd.
Ignition ON Ignition switch is ON.
—
OFF Ignition switch is in ACC position.
Reverse ON Selector lever is in “R” position.
Changes in indication may be delayed. This is normal.
OFF Selector lever is in other than “R”
position.
Side view Switch OFF — This item is displayed, but cannot be monitored.
Room Lamp OFF — This item is displayed, but cannot be monitored.
JPNIA1828ZZ
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AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-35
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Error item
Some error items may be displayed simultaneously accordi ng to the cause. If some error items are displayed
simultaneously, the detection of the cause can be per formed by the combination of display items
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- 3 9 , "
CONSULT-III Function".
CONTROL UNIT (CAN) CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit if the malfunc-
tion occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
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
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.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
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.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
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 ra-
dio interference may be detected unless
any symptom (GPS reception error, etc.)
occurs.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
GPS ROM Error
GPS RAM Error
GPS RTC Error
Revision: 2010 May2011 QX56

AV-36
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Unfinished configurationThe 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.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
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- 3 9 , "
CONSULT-III Function".
Front Display Connection Error When either one of the following items are
detected:
 front display unit power supply and
ground circuits are malfunctioning.
 Serial communication circuits between AV control unit and front display unit are
malfunctioning.  Front display unit power supply and
ground circuits.
 Serial communication circuits between AV control unit and front display unit.
 AV COMM CIRCUIT
 2nd Display Co nnection Error When either one of the following items are
detected:
 video distributor power supply and
ground circuits are malfunctioning.
 headrest display unit LH power supply and ground circuits are malfunctioning.
 AV communication circuits between AV
control unit and headrest display unit LH
are malfunctioning.
 location recognition signal circuit be-
tween headrest display unit LH and
ground is malfunctioning.  Video distributor power supply and
ground circuits.
 Headrest display unit LH power supply and ground circuits.
 AV communication circuits between AV control unit and headrest display unit LH.
 Location recognition signal circuit be-
tween headrest display unit LH and
ground.
3rd Display Connection Error When either one of the following items are
detected:
 headrest display unit RH power supply
and ground circuits are malfunctioning.
 AV communication circuits between
headrest display unit LH and headrest
display unit RH are malfunctioning.
 location recognition signal circuit be- tween headrest display unit RH and
ground is malfunctioning.  Headrest display unit RH power supply
and ground circuits.
 AV communication circuits between headrest display unit LH and headrest
display unit RH.
 Location recognition signal circuit be- tween headrest display unit RH and
ground.
AM/FM antenna amplifier short to ground Radio antenna amp. ON signal circuit mal-
function is detected.Radio antenna amp. ON signal circuit be-
tween AV control unit and antenna amp.
AM/FM antenna amplifier open
Ext_Amp_ON output terminal short to
ground BOSE amp. ON signal circuit malfunction is
detected.BOSE amp. ON signal circuit between AV
control unit and BOSE amp.
Ext_Amp_ON output terminal :open
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
Revision: 2010 May2011 QX56

AV-40
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV Communication
When “AV communication” of “CAN Diag Support Monitor” is selected, the f\
ollowing 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 e rror 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
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.
Diagnosis mode Description
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.
Error item Description Possible malfunction factor/Action to take
CAN COMM CIRCUIT [U1000] CAN communication malfunction is detect-
ed.Refer to
AV- 11 8 , "
DiagnosisProcedure".
CONTROL UNIT (CAN) [U1010] CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit if the malfunc-
tion occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
CONTROL UNIT (AV) [U1310]
AV communication circuit initial diagnosis
malfunction is detected.
Cont Unit [U1200]
AV control unit malfunction is detected.
GYRO NO CONN [U1201]
G-SENSOR NO CONN [U1202]
CAN CONT [U1216]
BLUETOOTH MODULE [U1217]
SUB CPU CONN [U1228]
iPod CERTIFICATION [U1229]
Built-in AUDIO CONN [U122E]
HDD CONN [U1218]
AV control unit malfunction is detected. If the music box function has no mal-
functions, then there is a possibility of
the detection of a temporary malfunc-
tion.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
HDD READ [U1219]
HDD WRITE [U121A]
HDD COMM [U121B]
HDD ACCESS [U121C]
GPS COMM [U1204]
GPS malfunction is detected. An intermittent error caused by strong
radio interference may be detected un-
less any symptom (GPS reception error,
etc.) occurs.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]
USB CONTROLLER [U1225] USB connection malfunction is detected.
Check that the connection to the USB con-
nector is normal.
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AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-41
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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.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
DSP COMM [U121E]
DVD COMM [U1227] AV control unit malfunction is detected.  If DVD 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.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
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 po-
sition of the steering angle sensor.
Refer to
BRC-64, "
Work Procedure".
FRONT DISP CONN [U1243] When either one of the following items are
detected:
 front display unit power supply and
ground circuits are malfunctioning.
 serial communication circuits between
AV control unit and front display unit are
malfunctioning.  Front display unit power supply and
ground circuits.
 Serial communication circuits between AV control unit and front display unit.
GPS ANTENNA CONN [U1244] GPS antenna connection malfunction is
detected.Check the connection of the GPS antenna
connector.
 AV COMM CIRCUIT [U1300]
 VIDEO DIST CONN [U1246] When either one of the following items are
detected:
 video distributor power supply and
ground circuits are malfunctioning.
 headrest display unit LH power supply and ground circuits are malfunctioning.
 AV communication circuits between AV
control unit and headrest display unit LH
are malfunctioning.
 location recognition signal circuit be-
tween headrest display unit LH and
ground is malfunctioning.  Video distributor power supply and
ground circuits.
 Headrest display unit LH power supply
and ground circuits.
 AV communication circuits between AV control unit and headrest display unit
LH.
 Location recognition signal circuit be- tween headrest display unit LH and
ground.
3RD DISP CONN [U125A] When either one of the following items are
detected:
 headrest display unit RH power supply
and ground circuits are malfunctioning.
 AV communication circuits between headrest display unit LH and headrest
display unit RH are malfunctioning.
 location recognition signal circuit be- tween headrest display unit RH and
ground is malfunctioning.  Headrest display unit RH power supply
and ground circuits.
 AV communication circuits between Headrest display unit LH and headrest
display unit RH.
 Location recognition signal circuit be- tween headrest display unit RH and
ground.
XM ANTENNA CONN [U1258] Satellite radio antenna connection mal-
function is detected.Satellite radio antenna disconnection.
USB OVERCURRENT [U1263] Detection of overcurrent in USB connect-
er.Check USB harness between the AV con-
trol unit and USB connector.
ANTENNA AMP TERMINAL
[OPEN or SHORT]
[U1264] Radio antenna amp. ON signal circuit mal-
function is detected.
Radio antenna amp. ON signal circuit be-
tween AV control unit and antenna amp.
AMP ON TERMINAL
[GND-SHORT or VB-SHORT]
[U1265] BOSE amp. ON signal circuit malfunction
is detected.
BOSE amp. ON signal circuit between AV
control unit and BOSE amp.
Error item Description Possible malfunction factor/Action to take
Revision: 2010 May2011 QX56