light INFINITI QX56 2011 Factory Service Manual

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
STRStarting System
ACCAccelerator Control System
CHYBRIDHBCHybrid Control System
HBBHybrid Battery System
HBRHybrid Brake System
DTRANSMISSION & DRIVE-
LINECLClutch
TMTransaxle & Transmission
DLNDriveline
FAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
SCSSuspension Control System
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGSTSteering System
STCSteering Control System
HRESTRAINTSSBSeat Belt
SBCSeat Belt Control System
SRSRS Airbag
SRCSRS Airbag Control System
IVENTILATION, HEATER &
AIR CONDITIONERVTLVentilation System
HAHeater & Air Conditioning System
HACHeater & Air Conditioning Control System
JBODY INTERIORINTInterior
IPInstrument Panel
SESeat
ADPAutomatic Drive Positioner
KBODY EXTERIOR,
DOORS, ROOF & VEHICLE
SECURITYDLKDoor & Lock
SECSecurity Control System
GWGlass & Window System
PWCPower Window Control System
RFRoof
HDHood
EXTExterior
BRMBody Repair
LDRIVER CONTROLSMIRMirrors
EXLExterior Lighting System
INLInterior Lighting System
WWWiper & Washer
DEFDefogger
HRNHorn
MELECTRICAL & POWER
CONTROLPWOPower Outlet
BCSBody Control System
LANLAN System
PCSPower Control System
CHGCharging System
PGPower Supply, Ground & Circuit Elements
NDRIVER INFORMATION &
MULTIMEDIAMWIMeter, Warning Lamp & Indicator
WCSWarning Chime System
SNSonar System
AVAudio, Visual & Navigation System
OCRUISE CONTROL &
DRIVER ASSISTANCECCSCruise Control System
DASDriver Assistance System
DMSDrive Mode System
PMAINTENANCEMAMaintenance
All rights reserved. No part
of this Service Manual may
be reproduced or stored in a
retrieval system, or transmit-
ted in any form, or by any
means, electronic, mechani-
cal, recording or otherwise,
without the prior written per-
mission of NISSAN MOTOR
CO., LTD.
Edition: May 2010
Publication No. SM1E-1Z62U0

AV-10
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Component Description
INFOID:0000000006216214
1. Squawker RH 2. Center speaker 3. Corner sensor front RH
4. Squawker LH 5. Front camera 6. Corner sensor front LH
7. Side camera LH 8. Front door speaker LH 9. Headrest display unit LH
10. Rear door tweeter LH 11. Rear door speaker LH 12. Roof speaker LH
13. Woofer 14. Corner sensor rear LH 15. Satellite radio antenna
16. Rear camera 17. Corner sensor rear RH 18. BOSE amp.
19. Roof speaker RH 20. Antenna amp. 21. Rear door speaker RH
22. Rear door tweeter RH 23. Headrest display unit RH 24. Front door speaker RH
25. Side camera RH and infrared LED
(auxiliary lighting) 26. Front display unit 27. Steering switch
28. Sonar control unit 29. Steering angle sensor 30. Preset switch
31. Around view monitor control unit 32. USB connector 33. Front auxiliary input jacks
34. Rear auxiliary input jacks 35. AV control unit 36. Video distributor
37. Multifunction switch 38. GPS antenna 39. Microphone A. Luggage side lower finisher LH re-
moved condition B.Luggage side lower finisher RH re-
moved condition C.Headlining assembly removed condi-
tion
D. Instrument lower
panel LH removed
condition E. Spiral cable part F. Cluste
r lid C removed condition
G. Within center console H. Instrument panel rear side
Part name Description
AV control unit  Integrates hard disk drive (HDD) allowing map data and music data to be stored.
 It is the master unit of the MULTI AV system, and it is connected to each control
unit by communication. It operates each system according to communication sig-
nals from the AV control unit.
 The AV control unit includes the audio, hands-free phone, navigation, USB con- nection, DVD play and vehicle information functions.
 It is connected to ECM and combination meter via CAN communication to obtain
necessary information for the vehicle information function.
 It inputs the illumination signals that are required for the front display dimming con- trol.
 It inputs the signals for driving status recognition (vehicle speed, reverse and park- ing brake).
 The RGB digital image signal and composite image signal are output to front dis-
play unit.
 Switches image and sound output to video distributor, inputting image switch sig- nal from headrest display unit via AV communication.
 Amp. ON signal and mode change signal transmitted to BOSE amp.
 Update of map data is performed with the DVD-ROM.
Front display unit  Front display image is controlled by the serial communication from AV control unit.
 RGB digital image signal is input from AV control unit.
 Composite image signal is input from AV control unit.
 Camera image signal is input from around view monitor control unit.
 Touch panel function can be operated for each system by touching a display di-
rectly.
Headrest display unit  Composite image signal [USB (video data), DVD and auxiliary input images] is in-
put from the video distributor.
 It receives the DVD/AUX/USB sound signal from the video distributor, and then transmits it to the headphones.
 Outputs image switch signal to video distributor via hard wire, according to rear seat remote controller operation.
 Outputs image switch signal to AV control unit via AV communication, according to
rear seat remote controller operation.
Revision: 2010 May2011 QX56

AV-12
< SYSTEM DESCRIPTION >
COMPONENT PARTS
*1: Image signals cannot be received from iPod®.
Side camera RH It inputs the power supply from around view monitor control unit and outputs the
image of the vehicle RH to around view monitor control unit.
 It performs the reception/transmission of the communication signal with around view monitor control unit.
Infrared LED
(Auxiliary lighting)  It illuminates around the front RH wheel by the power supply from around view
monitor control unit to improve nighttime visibility of front-side view.
 The infrared LED is an invisible light ray.
Sonar control unit  It is connected with around view monitor control unit via AV communication and
receives the sonar operation signal from around view monitor control unit.
 It transmits the sonar detection status to around view monitor control unit via AV
communication.
 It judges the warning level according to the signal from corner sensor.
Corner sensor The obstacle distance is detected. The signal is transmitted to sonar control unit.
Steering angle sensor It is connected to the AV control unit and transmits the steering angle sensor signal
via CAN communication.
Microphone  Used for hands-free phone operation.
 Microphone signal is transmitted to AV control unit.
 Power (Microphone VCC) is supplied from AV control unit.
GPS antenna GPS signal is received and transmitted to AV control unit.
Satellite radio antenna Receives the satellite radio waves and outputs it to AV control unit.
Antenna amp.  Radio signal received by glass antenna (main) is amplified and transmitted to AV
control unit.
 Power (antenna amp. ON signal) is supplied from AV control unit.
USB connector Image signal
*1 and sound signal of USB input is transmitted to AV control unit.
Part name Description
Revision: 2010 May2011 QX56

AV-14
< SYSTEM DESCRIPTION >
SYSTEM
MULTI AV SYSTEM : System Description
INFOID:0000000006216216
Multi AV system means that the following systems are integrated.
COMMUNICATION SIGNAL
 AV control unit function by transmitting/receiving dat a one by one with each unit (slave unit) that configures
them completely as a master unit by connecting between units that configure MULTI AV system with two AV
communication lines (H, L).
 Two AV communication lines (H, L) adopt a twisted pair line that is resistant to noise.
 AV control unit is connected by CAN communication, and it receives data signal from ECM and combination
meter It computes and displays fuel economy information value with the obtained information. Transmitting/
receiving of data signal is performed by BCM. Also, it transmits the required signal of vehicle setting and
receives the response signal.
 AV control unit is connected with front display unit and serial communication, and it transmits the required
signal of display and display control and receives the response signal from front display unit.
NAVIGATION SYSTEM FUNCTION
Description
 The AV control unit controls navigation function whil e GPS tuner has built-in map data, GYRO (angle speed
sensor), on the HDD (Hard Disk Drive).
 The AV control unit inputs operation signal with communication signal, through display (touch panel) and multifunction switch and steering switch.
 Guide sound is output to front speaker through BOSE am p. from AV control unit when operating navigation
system.
 A vehicle position is calculated with the GYRO (angl e speed sensor), vehicle sensor, signal from GPS satel-
lite and map data stored on HDD (Hard Disk Drive), and transmits the map image signal (RGB image, RGB
area, RGB image synchronizing) to the display.
Position Detection Principle
The navigation system periodically calculates the current vehicle
position according to the following three types of signals.
 Travel distance of the vehicle as determined by the vehicle speed
sensor
 Vehicle turning angle determined by the gyroscope (angular speed
sensor)
 The travel direction of the v ehicle determined by the GPS antenna
(GPS information)
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data, which is stored in the HDD
(Hard Disk Drive) (map-matching), and indicated on the screen with
a current location mark. More accurate data is used by comparing
position detection results from GPS to the map-matching.
FUNCTION NAME
Navigation system function Audio function
DVD play function
Front auxiliary input function USB connection function
Mobile entertainment system Hands-free phone function Touch panel function
Around view monitor function
Camera assistance sonar system Vehicle information function
Auto Light adjustment system
JSNIA0177GB
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
< SYSTEM DESCRIPTION >
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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-29
< SYSTEM DESCRIPTION >
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METHOD OF STARTING
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “SETTING” button, turn the volume control dial clockwise or counterclockwise for 40 clicks or more. (When
the self-diagnosis mode is start ed, the trouble diagnosis initial
screen is displayed.)
 Shifting from current screen to previous screen is performed
by pressing “BACK” button.
Confirmation/
Adjustment Display Diagnosis
The following check functions are available: color tone check by color
bar display and white display, light and shade check by gray scale dis-
play and touch panel calibration response check.
Vehicle Signals Diagnosis of signals can be performed for vehicle speed, parking brake,
lights, ignition, reverse, side view switch and room lamp.
Speaker Test The connection of a speaker can be confirmed by test tone.
Navigation Steering Angle Ad-
justment
When there is a difference between the actual turning angle and the ve-
hicle mark turning angle, it can be adjusted.
Speed Calibration When there is a difference between the current location mark and the ac-
tual location, it can be adjusted.
Error History The system malfunction and the frequency when occurring in the past
are displayed. When the malfunctioning item is selected, the time and
place that the selected malfunction last occurred are displayed.
Synchronizer FES Clock –
Vehicle CAN Diagnosis The transmitting/receiving of CAN communication can be monitored.
AV COMM Diagnosis The communication condition of each unit of Multi AV system can be
monitored.
Handsfree Phone The received volume adjustment of hands-free phone, microphone
speaker check, and erase memory can be performed.
Camera It can perform the confirmation of a signal connection to around view
monitor control unit, the calibration
of each camera, Correct Draw Line
of Camera Image, and Fine Tuning of Birds-Eye View.
XM XM NaviTrffic Change Channel
 Any necessary channels required to receive traffic information from the satellite radio system can be set.
Change Application ID
 Any application ID'-s required to receive traffic information from the satellite radio system can be set.
XM NavWeather
XM CGS
Diag
Delete Unit Connection Log Erase the connection history of unit and error history.
Initialize Settings Initializes the AV control unit memory.
Version Information Version information of the AV control unit is displayed. Mode Description
JSNIA2993ZZ
Revision: 2010 May2011 QX56

AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-33
< SYSTEM DESCRIPTION >
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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
Revision: 2010 May2011 QX56

AV-42
< SYSTEM DESCRIPTION >
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.
 AV COMM CIRCUIT [U1300]
 SWITCH CONN [U1240]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 [U1300]
 AROUND CAMERA CONN [U125B] 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.
 AV COMM CIRCUIT [U1300]
 SONAR CONN [U125C] 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 [U1300]
 SWITCH CONN [U1240]
 SONAR CONN [U125C]
 AROUND CAMERA CONN [U125B] AV communication circuits between AV
control unit and multifunction switch are
malfunctioning.AV communication circuits between AV
control unit and multifunction switch.
 AV COMM CIRCUIT [U1300]
 SWITCH CONN [U1240]
 SONAR CONN [U125C]
 AROUND CAMERA CONN [U125B]
 VIDEO DIST CONN [U1246] Error item Description Possible malfunction factor/Action to take
Display Item Display Vehicle status Remarks
VHCL SPD SIG 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)
PKB SIG On Parking brake is applied.
Off Parking brake is released.
ILLUM SIG On
Block the light from the auto light op-
tical 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.
IGN SIG On Ignition switch is ON
Off Ignition switch is in ACC position
REV SIG On Selector lever is in R position
Changes in indication may be delayed. This is
normal.
Off Selector lever is in any position other
than R
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AV
AV CONTROL UNITAV-51
< ECU DIAGNOSIS INFORMATION >
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ECU DIAGNOSIS INFORMATION
AV CONTROL UNIT
Reference ValueINFOID:0000000006216225
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor Item Condition Value/Status
VHCL SPD SIG Ignition switch
ONVehicle speed >= 8 km/h (5 MPH) On
Vehicle speed < 8 km/h (5 MPH) Off
PKB SIG Ignition switch
ONParking brake is applied. On
Parking brake is released. Off
ILLUM SIG Ignition switch
ONBlock the light from the auto light optical sen-
sor when the lighting switch is 1st or 2nd.
On
Expose the auto light optical sensor to light
when the lighting switch is OFF, 1st or 2nd. Off
IGN SIG Ignition switch
ON
—On
Ignition switch
ACC —Off
REV SIG Ignition switch
ONSelector lever is in the R position On
Selector lever in any position other than R Off
SIDE VIEW SW Ignition switch
ONThis item is displayed, but cannot be moni-
tored.
Off
ROOM LAMP Ignition switch
ONThis item is displayed, but cannot be moni-
tored.
Off
JSNIA2480ZZ
Revision: 2010 May2011 QX56