2011 INFINITI QX56 engine

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-208
< SYMPTOM DIAGNOSIS >
NORMAL OPERATING CONDITION
RELATED TO AUDIO
 The majority of the audio malfunctions are the result of outside causes (bad CD, electromagnetic interfer-
ence, etc.). Check the symptoms below to diagnose the malfunction.
 The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and oper-
ation of each piece of electrical equipment, and then determine the cause.
NOTE:
 CD-R is not guaranteed to play because they can c ontain compressed audio (MP3, WMA, AAC, M4A) or
could be incorrectly mastered by the customer on a computer.
 Check if the CDs carry the Compact Disc Logo. If not, the disc is not mastered to the “red book” Compact
Disc Standard and may not play.
Noise resulting from variations in field strength, such as fading noise and multi-path noise, or external noise from trains and other
sources, is not a malfunction.
NOTE:
 Fading noise: This noise occurs because of variations in the field strength in a narrow range due to mountains or buildings bl ocking
the signal.
 Multi-path noise: This noise results from a time difference between the broadcast waves directly from the station arriving at the
antenna and the waves reflected by mountains or buildings.
RELATED TO DVD
The system consistently selects
the wrong voicetag 1. Ensure that the phone book entry name requested matches what was originally stored. This
can be confirmed by using the “List Names” command.
2. Replace one of the names being confused with a new name.
Symptom Solution
Symptom Cause and Counter measure
Cannot play Check if the CD was
inserted correctly.
Check if the CD is scratched or dirty.
Check if there is condensation inside the player, and if there is, wait until the condensation is gone
(about 1 hour) before using the player.
If there is a temperature increase error, the player will play correctly after it returns to the normal
temperature.
If there is a mixture of music CD files (CD-DA data) and MP3/WMA/AAC/M4A files on a CD, only
the music CD files (CD-DA data) will be played.
Files with extensions other than “.MP3”, “.WMA”, “AAC”, “.M4A”, “.mp3”, “.wma”, “.aac” or “.m4a”
cannot be played. In addition, the character codes and number of characters for folder names and
file names should be in compliance with the specifications.
Check if the disc or the file is generated in an irregular format, This may occur depending on the
variation or the setting of MP3/WMA/AAC/M4A writing applications or other text editing applica-
tions.
Check if the finalization process, such as session close and disc close, is done for the disc.
Check if the CD is protected by copyright.
Disks recorded in live file system format are not supported. (For Microsoft Windows Vista, check
the settings.)
Poor sound quality Check if the CD is scratched or dirty.
It takes a relatively long time before
the music starts playing. If there are many folder or file levels on the MP3/WMA/AAC/M4A CD, or if it is a multisession disc,
some time may be required before the music starts playing.
Music cuts off or skips The writing software and hardware combination might not match, or the writing speed, writing
depth, writing width might not match the specifications. Try using the slowest writing speed.
Skipping with high bit rate files Skipping may occur with large quantities if data such as for high bit rate data.
Move immediately to the next song
when playing When a non-MP3/WMA/AAC/M4A file has been given an extension of “.MP3”, “.WMA”, “AAC”,
“.M4A” “.mp3”, “.wma”, “.aac” or “.m4a”, or when play is prohibited by copyright protection, the
player will skip to the next song.
The songs do not play back in the
desired order. The playback order is the order in which the files were written by the software, so the files might
not play in the desired order.
Revision: 2010 May2011 QX56

BCS
PRECAUTIONSBCS-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006274786
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Revision: 2010 May2011 QX56

BCS-6
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
BODY CONTROL SYSTEM
BODY CONTROL SYSTEM : System DescriptionINFOID:0000000006274789
OUTLINE
 BCM (Body Control Module) controls the various electrical components. It inputs the information required to
the control from CAN communication and the signal received from each switch and sensor.
 BCM has combination switch reading function for reading the operation status of combination switches (light,
turn signal, wiper and washer) in addition to a function fo r controlling the operation of various electrical com-
ponents. It also has the signal transmission function as the passed point of signal and the power saving con-
trol function that reduces the power c onsumption with the ignition switch OFF.
 BCM is equipped with the diagnosis function that perfo rms the diagnosis with CONSULT-III and various set-
tings.
BCM CONTROL FUNCTION LIST
System Reference
Combination switch reading system BCS-7, "
COMBINATION SWITCH READING SYSTEM : System
Diagram"
Signal buffer system
BCS-10, "SIGNAL BUFFER SYSTEM : System Diagram"
Power consumption control systemBCS-11, "POWER CONSUMPTION CONTROL SYSTEM : Sys-
tem Diagram"
Auto light system
EXL-11, "AUTO LIGHT SYSTEM : System Diagram"
Turn signal and hazard warning lamp systemEXL-18, "TURN SIGNAL AND HAZARD WARNING LAMP SYS-
TEM : System Diagram"
Headlamp system
EXL-10, "HEADLAMP SYSTEM : System Diagram"
Daytime running light systemEXL-14, "DAYTIME RUNNING LIGHT SYSTEM : System Dia-
gram"
Parking, license plate, side maker and tail lamps system
EXL-18, "PARKING, LICENSE PLATE, SIDE MARKER AND
TAIL LAMP SYSTEM : System Diagram"
Front fog lamp system
EXL-20, "FRONT FOG LAMP SYSTEM : System Diagram"
Exterior lamp battery saver systemEXL-20, "EXTERIOR LAMP BATTERY SAVER SYSTEM : Sys-
tem Diagram"
Interior room la
mp control system INL-6, "INTERIOR ROOM LAMP CONTROL SYSTEM : System
Diagram"
Interior room lamp battery saver system
INL-9, "INTERIOR ROOM LAMP BATTERY SAVER SYSTEM :
System Diagram"
Front wiper and washer systemWW-7, "FRONT WIPER AND WASHER SYSTEM : System Dia-
gram"
Rear wiper and washer systemWW-10, "REAR WIPER AND WASHER SYSTEM : System Dia-
gram"
Headlamp washer system
WW-13, "HEADLAMP WASHER SYSTEM : System Diagram"
Warning chime systemWCS-6, "WARNING CHIME SYSTEM : System Diagram"
Power door lock systemDLK-16, "System Diagram"
Infiniti Vehicle immobilizer System (IVIS)SEC-15, "INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS :
System Diagram"
Vehicle security systemTheft warning alarm
SEC-17, "VEHICLE SECURITY SYSTEM : System Diagram"Panic alarm
Rear window defogger system DEF-6, "
System Diagram"
Intelligent Key system/engine start systemDLK-18, "INTELLIGENT KEY SYSTEM : System Diagram"
Power window system PWC-8, "SystemDiagram"
Retained accessory power (RAP) systemPWC-8, "System Description"
Revision: 2010 May2011 QX56

BCS-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000006274796
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×: Applicable item
*: This item is indicated, but not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.
Diagnosis mode Function Description
Work Support Changes the setting for each system function.
Self Diagnostic Result Displays the diagnosis results judged by BCM. Refer to BCS-57, "
DTCIndex".
CAN Diag Support Monitor Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.
Data Monitor The BCM input/output signals are displayed.
Active Test The signals used to activate ea ch device are forcibly supplied from BCM.
Ecu Identification The BCM part number is displayed.
Configuration  Read and save the vehicle specification.
 Write the vehicle specification when replacing BCM.
System Sub system selection item Diagnosis mode
Work Support Data Monitor Active Test
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ××
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ×××
— AIR CONDITONER* ××
 Intelligent Key system
 Engine start system INTELLIGENT KEY
×××
Combination switch COMB SW ×
Body control system BCM ×
IVIS IMMU ×××
Interior room lamp battery saver BATTERY SAVER ×××
Back door TRUNK ×
Vehicle security system THEFT ALM ×××
RAP system RETAINED PWR ×
Signal buffer system SIGNAL BUFFER ××
Revision: 2010 May2011 QX56

BCS
DIAGNOSIS SYSTEM (BCM)BCS-15
< SYSTEM DESCRIPTION >
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DOOR LOCK
DOOR LOCK : CONSULT-III Fu
nction (BCM - DOOR LOCK)INFOID:0000000006376454
BCM CONSULT-III FUNCTION
CONSULT-III performs the following functions via CAN communication with BCM.
WORK SUPPORT
CONSULT screen item Indication/Unit Description
Vehicle Speed km/h Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter km Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)
SLEEP>OFF While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC While turning power supply position from “LOCK” to “ACC”
ACC>ON While turning power supply position from “ACC” to “IGN”
RUN>ACC While turning power supply position
from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN While turning power su
pply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT While turning power su
pply position from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF While turning power supply position from “ACC” to “OFF”
OFF>LOCK While turning power supply position from “OFF” to “LOCK”
OFF>ACC While turning power supply position from “OFF” to “ACC”
ON>CRANK While turning po wer supply position from “IGN” to “CRANKING”
OFF>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode
LOCK Power supply position is “LOCK” (Ignition switch OFF with steer-
ing is locked.)
OFF Power supply position
is “OFF” (Ignition switch OFF with steering
is unlocked.)
ACC Power supply position is “ACC” (Ignition switch ACC)
ON Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN Power supply posi
tion is “RUN” (Ignition switch ON with engine
running)
CRANKING Power supply position is “CRANKING” (At engine cranking)
IGN Counter 0 - 39 The number of times that ignition switch is turned ON after DTC is detected
 The number is 0 when a malfunction is detected now.
 The number increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition
whenever ignition switch OFF → ON.
 The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
Revision: 2010 May2011 QX56

BCS-20
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
*1: Factory setting
*
2: For models for Canada, this item is displayed but is not operated.
DATA MONITOR
BATTERY SAVER SET On*1With the exterior lamp battery saver function
Off Without the exterior lamp battery saver function
ILL DELAY SET MODE 1*
145 sec.
Sets delay timer function timer operation time
(All doors closed)
MODE 2
Without the
function
MODE 3 30 sec.
MODE 4 60 sec.
MODE 5 90 sec.
MODE 6 120 sec.
MODE 7 150 sec.
MODE 8 180 sec.
AUTO LIGHT LOGIC SET*
2
MODE 1*1With twilight ON custom & with wiper INT, LO and HI
MODE 2 With twilight ON custom & with wiper LO and HI
MODE 3 With twilight ON custom & without
MODE 4 Without twilight ON custom & with wiper INT, LO and HI
MODE 5 Without twilight ON custom & with wiper LO and HI
MODE 6 Without twilight ON custom & without
Service item Setting item Setting
Monitor item
[Unit] Description
PUSH SW
[On/Off] The switch status input from push-button ignition switch
ENGINE STATE
[Stop/Stall/Crank/Run] The engine status received from ECM via CAN communication
VEH SPEED 1
[km/h] The value of the vehicle speed received from combination meter via CAN communi-
cation
TURN SIGNAL R
[On/Off]
Each switch status that BCM judges from the combination switch reading function
TURN SIGNAL L
[On/Off]
TA I L L A M P S W
[On/Off]
HI BEAM SW
[On/Off]
HEAD LAMP SW1
[On/Off]
HEAD LAMP SW2
[On/Off]
PASSING SW
[On/Off]
AUTO LIGHT SW
[On/Off]
FR FOG SW
[On/Off]
RR FOG SW
[On/Off]
NOTE:
This item is indicated, but can not monitored
Revision: 2010 May2011 QX56

BCS-24
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
INTELLIGENT KEY
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)INFOID:0000000006376455
WORK SUPPORT
Test item Operation Description
FLASHER RH Outputs the voltage to blink the right side turn signal lamps.
LH Outputs the voltage to blink the left side turn signal lamps.
Off Stops the voltage to turn the turn signal lamps OFF.
Monitor item Description
INSIDE ANT DIAGNOSIS This function allows inside key antenna self-diagnosis
LOCK/UNLOCK BY I-KEY Door lock/unlock function by door request switch mode can be changed to operation in this
mode
 On: Operate
 Off: Non-operation
ENGINE START BY I-KEY Engine start function mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
TRUNK/GLASS HATCH OPEN Buzzer reminder function mode by back door opener switch can be changed to operation with
this mode
 On: Operate
 Off: Non-operation
PANIC ALARM SET Panic alarm button pressing time on Intelligent Key button can be selected from the following
with this mode
 MODE 1: 0.5 sec
 MODE 2: Non-operation
 MODE 3: 1.5 sec
TRUNK OPEN DELAY Back door open button pressing to Intelligent Key button can be selected as per the following
in this mode
 MODE 1: Press and hold
 MODE 2: Press twice
 MODE 3: Press and hold, or press twice
LO- BATT OF KEY FOB WARN Intelligent Key low battery warning mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
ANTI KEY LOCK IN FUNCTI Key reminder function mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
HAZARD ANSWER BACK Hazard reminder function mode by door request switch and Intelligent Key button can be se-
lected from the following with this mode
 Lock Only: Door lock operation only
 Unlock Only: Door unlock operation only
 Lock/Unlock: Lock and unlock operation
 Off: Non-operation
ANS BACK I-KEY LOCK Buzzer reminder function (lock operation) mode by door request switch can be selected from
the following with this mode
 Horn Chirp: Sound horn
 Buzzer: Sound Intelligent Key warning buzzer
 Off: Non-operation
ANS BACK I-KEY UNLOCK Buzzer reminder function (unlock operation) mode by door request switch can be changed to
operation with this mode
 On: Operate
 Off: Non-operation
Revision: 2010 May2011 QX56