2011 INFINITI QX56 sensor

AV
SYSTEMAV-21
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Around view monitor screen transition
FRONT VIEW The front view image is from the front camera.
 When the selector lever is in any position other than the reverse position, the front view is displayed by
pressing the “CAMERA” switch. It improves the visibility of obstacles in front of the vehicle and helps driving
by the images displayed from Bi rds-Eye view and Front-Side view.
 Display the vehicle width guiding line and vehicle distance guiding line in front view and display the predic- tive course line according to the steering angle.
 If the steering angle is within approximately 90 degrees, t he predictive course lines on the left/right side are
displayed. If the steering angle is exceeding approxim ately 90 degrees, only the predictive course line on the
outside (in the opposite side of steering direction) is displayed.
 AV control unit is connected to the steering angle s ensor and receives the steering angle signal via CAN
communication. AV control unit is transmits steering angle signal to around view monitor control unit via AV
communication.
 Around view monitor control unit controls the directi on and distance of the predictive course line according to
the sensor signal from steering angle sensor.
JSNIA3112GB
Revision: 2010 May2011 QX56

AV-22
< SYSTEM DESCRIPTION >
SYSTEM
Front view guiding lines
REAR VIEW The rear view image is from the rear camera.
 When the selector lever is in the reverse position, the rear view is displayed. Backing and parking are
improved by the images from Birds-Eye view and Front-S ide view. The rear wide view function allows the
display of an image with a 180 ° horizontal angle.
 Display the vehicle width guiding line and vehicle distance guiding line in Rear view and display the predic- tive course line according to the steering angle (except when using the rear wide view function).
 The predictive course line is not di splayed at the steering neutral position.
 AV control unit is connected to the steering angle s ensor and receives the steering angle signal via CAN
communication. AV control unit is transmits steering angle signal to around view monitor control unit via AV
communication.
 Around view monitor control unit controls the direction and distance of predictive course line according to the
sensor signal from steering angle sensor.
Rear view guiding lines
FRONT-SIDE VIEW
 The front-side view image is from the side camera RH.
 In Front-Side view, display the vehicle distance guiding line and vehicle width guiding line.
 The infrared LED illumination is installed on the door mirror RH to illuminate around the front wheels.
JSNIA0770GB
JSNIA2984GB
Revision: 2010 May2011 QX56

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
Revision: 2010 May2011 QX56

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
Revision: 2010 May2011 QX56

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.
Revision: 2010 May2011 QX56

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
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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.
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Revision: 2010 May2011 QX56