2011 INFINITI QX56 Factory Service Manual

warning lights airbag off CD player spare wheel deactivate passenger airbag fuse box

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INFINITI QX56 2011 Factory Service Manual
CCS-10
< SYSTEM DESCRIPTION >[ICC]
COMPONENT PARTS
Component Description
INFOID:0000000006224266
× : Applicable
13. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
14. ADAS cont

CCS-10
< SYSTEM DESCRIPTION >[ICC]
COMPONENT PARTS
Component Description
INFOID:0000000006224266
× : Applicable
13. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
14. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Back side of engine room (RH) B. Front bumper (center) C. Upper side of brake pedal
D. Under side of inst rument lower driver
panel
Component Function
Description
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
ADAS control unit ×××× ADAS control unit calculates a target distance between vehicles
and a target speed, based on signals received from each sensor
and switch to transmit an engine torque command value to ECM
and a brake fluid pres sure control signal to ABS actuator and
electric unit (control unit) via CAN communication
ADAS control unit transmits buzzer output signal to combination
meter via CAN communication
ICC sensor ×××× ICC sensor detects light reflected from a vehicle ahead by irra-
diating laser forward and calculates a distance from the vehicle
ahead and a relative speed, based on the detected signal
ICC sensor transmits the presence/absence of vehicle ahead and the distance from the vehicle to ADAS control unit via ITS
communication
ECM ×××× ECM transmits the accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal, ICC steering switch sig-
nal, etc. to ADAS control unit via CAN communication
ECM controls the electric throttle control actuator based on the engine torque demand received from the ADAS control unit via
CAN communication
ABS actuator and electric unit
(control unit) ×××× ABS actuator and electric unit (control unit) transmits the vehicle
speed signal (wheel speed), stop lamp signal and VDC/TCS/
ABS system operation condition to ADAS control unit via CAN
communication
ABS actuator and electric unit (control unit) controls the brake, based on a brake fluid pressure control signal received from the
ADAS control unit via CAN communication
BCM ×BCM transmits the front wiper request signal to ADAS control unit
via CAN communication
TCM ××TCM transmits the signal related to A/T control to ADAS control
unit via CAN communication
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
CCS
COMPONENT PARTSCCS-11
< SYSTEM DESCRIPTION > [ICC]
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NOTE:
Only IBA system uses
Combination meter ××××Performs the following operations using the signals received

CCS
COMPONENT PARTSCCS-11
< SYSTEM DESCRIPTION > [ICC]
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NOTE:
Only IBA system uses
Combination meter ××××Performs the following operations using the signals received from
the ADAS control unit via the CAN communication
Displays the ICC system operation status using the meter dis-
play signal
Illuminates the ICC system warning lamp using the ICC warning
lamp signal
Illuminates the IBA OFF indicator lamp using the IBA OFF indi- cator lamp signal
Operates the buzzer (ICC warning chime) using the buzzer out- put signal
ICC steering switch ×× ICC steering switch allows the ON/OFF of the Intelligent Cruise
Control and the settings of a vehicle speed and distance be-
tween vehicles
ICC steering switch signal is transmitted to ECM. ECM transmits the signal to the ADAS control unit via CAN communication
ICC brake switch ×××× ICC brake switch is turned OFF and stop lamp switch is turned
ON, when depressing the brake pedal
ICC brake switch signal is input to ECM. These signals are transmitted from ECM to ADAS control unit via CAN communi-
cation
Stop lamp switch signal is in put to ECM and ABS actuator and
electric unit (control unit). These signals are transmitted from
ECM and ABS actuator and electric unit (control unit) to ADAS
control unit via CAN communication
Stop lamp switch
××××
ICC brake hold relay ××ICC brake hold relay activates the stop lamp by ICC brake hold re-
lay drive signal (stop lamp drive signal) outputted by the ADAS
control unit
Transfer control unit ××××Transfer control unit transmits a mode selection state of 4WD shift
switch to the ADAS control unit via CAN communication
IBA OFF switch ×
NoteIBA OFF switch signal is input to the ADAS control unit
Steering angle sensor ×Measures the rotation amount, rotation speed, and rotation direc-
tion of steering wheel, and then transmits them to ADAS control
unit via CAN communication
Component
Function
Description
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
CCS-12
< SYSTEM DESCRIPTION >[ICC]
SYSTEM
SYSTEM
System DescriptionINFOID:0000000006224267
SYSTEM DIAGRAM
ADAS CONTROL UNIT INPU
T/OUTPUT SIGNAL ITEM
Input Signal Item
JSOIA0289GB
Revision: 2010 May2

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INFINITI QX56 2011 Factory Service Manual
CCS
SYSTEMCCS-13
< SYSTEM DESCRIPTION > [ICC]
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Transmit unit Signal name Description
ECM CAN com-
munica-
tionClosed throttle position signal Receives idle position state

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< SYSTEM DESCRIPTION > [ICC]
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Transmit unit Signal name Description
ECM CAN com-
munica-
tionClosed throttle position signal Receives idle position state (ON/OFF)
Accelerator pedal position signal Receives accelerator pedal position (angle)
ICC prohibition signal
Receives an operable/inoperable state of the ICC sys-
tem
ICC steering switch
signal Main switch signal
Receives the operational state of the ICC steering
switch
SET/COAST switch
signal
CANCEL switch sig-
nal
RESUME/ACCEL-
ERATE switch signal
DISTANCE switch
signal
Engine speed signal Receives engine speed
Stop lamp switch signal Receives an operational state of the brake pedal
ICC brake switch signal Receives an operational state of the brake pedal
Snow mode signal Receives an operational state of the snow mode
TCM CAN com-
munica-
tionInput speed signal Receives the number of revolutions of input shaft
Current gear position signal Receives a current gear position
Shift position signal Receives a selector lever position
Output shaft revolution signal Receives the number of revolutions of output shaft
ABS actuator
and electric unit
(control unit) CAN com-
munica-
tionABS malfunction signal Receives
a malfunction state of ABS
ABS operation signal Receives an operational state of ABS
ABS warning lamp signal Receives an ON/OFF state of ABS warning lamp
TCS malfunction signal Receives a malfunction state of TCS
TCS operation signal Receives an operational state of TCS
VDC OFF switch signal Receives an ON/OFF state of VDC
VDC malfunction signal Receives a malfunction state of VDC
VDC operation signal Receives an operational state of VDC
Vehicle speed signal (ABS) Receives wheel speeds of four wheels
Stop lamp switch signal Receives an operational state of the brake pedal
Yaw rate signal Receives yaw rate acting on the vehicle
Combination
meter CAN com-
munica-
tion
Parking brake switch signal Receives an operational state of the parking brake
BCM CAN com-
munica-
tion
Front wiper request signal Receives an operational state of front wiper(s)
Steering angle
sensor CAN com-
munica-
tionSteering angle sensor malfunction signal Receives a malfunction state of steering angle sensor
Steering angle sensor signal
Receives the number of revolutions, turning direction of
the steering wheel
Steering angle speed signal Receives the turning angle speed of the steering wheel
Transfer control
unit CAN com-
munica-
tion
Current 4WD mode signal Receives a mode selection state of the 4WD mode
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
CCS-14
< SYSTEM DESCRIPTION >[ICC]
SYSTEM
Output Signal Item
DESCRIPTION
Intelligent Cruise Control
The Intelligent Cruise Control (ICC) system maintains a se
lected distance from the vehicle in fron

CCS-14
< SYSTEM DESCRIPTION >[ICC]
SYSTEM
Output Signal Item
DESCRIPTION
Intelligent Cruise Control
The Intelligent Cruise Control (ICC) system maintains a se
lected distance from the vehicle in front of own vehi-
cle within the speed range of 0 to 144 km/h (0 to 90 MPH) up to the set speed.
The set speed can be selected by the driver between 32 to 144 km/h (20 to 90 MPH).
The vehicle travels at a set speed when the road ahead is clear.
The ICC system can be set to one of two cruise control modes:
CAUTION:
Never set the cruise speed exceed ing the posted speed limit.
Vehicle-to-vehicle Distance Control Mode
ICC sensorITS com-
munica-
tionICC sensor signal
Receives detection results, such as the presence or ab-
sence of a leading vehicle and distance from the vehicle
IBA OFF switch IBA OFF switch signal Receives an ON/OFF state of the IBA OFF switch Transmit unit Signal name Description
Reception unit Signal name Description
ECM CAN commu-
nicationICC operation signal
Transmits an ICC operation signal necessary for Intel-
ligent Cruise Control
TCM CAN commu-
nicationICC operation signal Transmits an ICC operation signal necessary for Intel-
ligent Cruise Control via ECM
ABS actuator
and electric
unit (control
unit) CAN commu-
nication
Brake fluid pressure control signal
Transmits a brake fluid pressure control signal to acti-
vates the brake
Combination
meter CAN commu-
nicationMeter display
signal Own vehicle indicator
signal
Transmits a signal to display a state of the system on
the information display
Vehicle ahead detec-
tion indicator signal
Set vehicle speed indi-
cator signal
Set distance indicator
signal
SET switch indicator
signal
MAIN switch indicator
signal
ICC warning lamp signal Transmits an ICC warning lamp signal to turn ON the
ICC system warning lamp
IBA OFF indicator lamp signal Transmits a signal to turn ON the IBA OFF indicator
lamp
Transmits an ON/OFF state of the intelligent brake
assist
Buzzer output signal Transmits a buzzer output signal to turn ON the buzz-
er of the following systems:
Intelligent Cruise Control (ICC)
Intelligent Brake Assist (IBA)
ICC sensor ITS commu-
nication
Vehicle speed signal Transmits a vehicle speed calculated by the ADAS
control unit
ICC brake hold
relay ICC brake hold relay drive signal
Activates the brake hold relay and turns ON the stop
lamp
Revision: 2010 May2011 QX56

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$INFINITI QX56 2011 Factory Service Manual CCS SYSTEMCCS-15 < SYSTEM DESCRIPTION > [ICC] C D E F G H I J K L M B N P A For maintaining a selected distance between own vehicle and the vehicle in front of own vehicle up to t\ he pre- set speed.$

CCS
SYSTEMCCS-15
< SYSTEM DESCRIPTION > [ICC]
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For maintaining a selected distance between own vehicle and the vehicle in front of own vehicle up to t\
he pre-
set speed. Refer to CCS-15, "
VEHICLE-TO-VEHICLE DISTANCE CO NTROL MODE FUNCTION : System
Description".
Conventional (Fixed Speed) Cruise Control Mode
For cruising at a preset speed. Refer to CCS-18, "CONVENTIONAL (FIXED SPEED) CRUISE CONTROL
MODE FUNCTION : System Description".
NOTE:
In the Conventional (Fixed Speed) Cruise Control Mode, a warning chime will not sound to warn driver if own
vehicle are too close to the vehicle ahead.
WARNING:
Always drive carefully and attentively when using ei ther cruise control mode. To avoid serious injury
or death, do not rely on the system to prevent accide nts or to control the vehicle's speed in emer-
gency situations. Do not use cr uise control except in appropriat e rode and traffic conditions.
Distance Control Assist (DCA) System
DCA share the systems and component s with ICC system. Refer to DAS-68, "System Description".
Forward Collision Warning (FCW) System
FCW share the systems and component s with ICC system. Refer to DAS-218, "System Description".
Intelligent Brake Assist (IBA) System
IBA system share the systems and components with ICC system. Refer to BRC-152, "INTELLIGENT BRAKE
ASSIST : System Description".
Brake Assist (with preview function)
Brake Assist (with preview function) share t he systems and components with ICC system. Refer to BRC-145,
"BRAKE ASSIST (WITH PREVIEW FUNCTION) : System Description".
Fail-safe (ADAS Control Unit)INFOID:0000000006224268
If a malfunction occurs in each system, ADAS control unit cancels eac h control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
Fail-safe (ICC Sensor)INFOID:0000000006224269
If a malfunction occurs in the ICC sensor, ADAS cont rol unit cancels control, sounds a beep, and turns ON the
ICC system warning lamp in the combination meter.
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE FUNCTION
VEHICLE-TO-VEHICLE DISTANCE CONTRO L MODE FUNCTION : System Descrip-
System Buzzer Warning lamp/Indicator lamp Description
Vehicle-to-vehicle distance control mode High-pitched
toneICC system warning lamp Cancel
Conventional (fixed speed) cruise control mode High-pitched
tone
ICC system warning lamp Cancel
Intelligent Brake Assist (IBA) High-pitched
toneIBA OFF indicator lamp Cancel
Forward Collision Warning (FCW) High-pitched
toneIBA OFF indicator lamp Cancel
Distance Control Assist (DCA) High-pitched
tone
ICC system warning lamp Cancel
Lane Departure Warning (LDW) — Lane departure warning lamp Cancel
Lane Departure Prevention (LDP) Low-pitched
toneLane departure warning lamp Cancel
Blind Spot Warning (BSW) — BSW warning lamp Cancel
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
CCS-16
< SYSTEM DESCRIPTION >[ICC]
SYSTEM
tion
INFOID:0000000006224270
SYSTEM DIAGRAM
FUNCTION DESCRIPTION
In the vehicle-to-vehicle distance control mode, the Inte lligent Cruise Control (ICC) syste

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INFINITI QX56 2011 Factory Service Manual
CCS
SYSTEMCCS-17
< SYSTEM DESCRIPTION > [ICC]
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With ICC system, the driver can maintain the same speed as other vehicles without the constant need to
adjust the set spee

CCS
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< SYSTEM DESCRIPTION > [ICC]
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With ICC system, the driver can maintain the same speed as other vehicles without the constant need to
adjust the set speed as driver would with a normal cruise control system.
The following items are controlled in the vehicle-to-vehicle distance control mode
When there are no vehicles traveling ahead, the vehi cle-to-vehicle distance control mode maintains the
speed set by the driver. The set speed range is between approximately 32 and 144 km/h (20 and 90 MPH).
When there is a vehicle traveling ahead, the vehicle- to-vehicle distance control mode adjusts the speed to
maintain the distance, selected by driver, from a vehicle ahead. The adjusting speed range is up to the set
speed.
When the vehicle traveling ahead has moved out from its lane of travel, the vehicle-to-vehicle distance con-
trol mode accelerates and maintains vehicle speed up to the set speed.
CAUTION:
If the vehicle ahead comes to stop, the vehicle decel erates to a standstill within the limitations of the
system. The system will cancel once it judges that the vehicle has come to a standstill and sound a
warning chime.
To prevent the vehicle from moving, th e driver must depress the brake pedal.
NOTE:
When the accelerator pedal is depressed, the brake oper ation and the warning are not performed by the ICC
system.
OPERATION DESCRIPTION
Quickly push (less than 1.5 seconds) and release the MAIN switch ON.
The MAIN switch indicator, set distance indicator, own vehicle indicator, and set vehicle speed indicator come
on and ICC system is set to a standby state.
ADAS control unit performs the control as per the following:
Set Condition
Under a standby state, pushing down the SET/ COAST switch will start system control.
When vehicle speed is between approximately 32 km/h and 144 km/h (20 MPH and 90 MPH).
When vehicle speed is below approximately 32 km/h ( 20 MPH) if the vehicle ahead is detected. The set
vehicle speed becomes 32 km/h (20 MPH).
If the system is canceled by conditi ons 1-6 below, the system will resume c ontrol at the last set cruising speed
by pushing up the RESUME/ACCELERATE switch.
NOTE:
When the SET/COAST switch is pushed under the following condi- tions, the system cannot be set and the set vehicle speed indicator
will blink for approximately 2 seconds.
- When traveling below 32 km/h (20 MPH) and the vehicle ahead is not detected.
- When the selector lever is not in the “D” position or manual mode.
- When the front wipers are operating at HI.
(If the vehicle is equipped with a rain sensing auto-wiper, the sys-
tem may cancel when the wipers are set to AUTO)
- When the parking brakes are applied.
- When the brakes are operated by the driver.
Constant
speed Comparing the set vehicle speed with the current vehicle speed, transmit the command to ECM via CAN communication
to reach the set vehicle speed, and controls the electric throttle control actuator
Decelera-
tion When a vehicle ahead (slower than driver set vehicle speed) appears or when a vehicle ahead slows down, the system
controls the electric throttle control actuator into the close direction and decelerates the vehicle. If greater deceleration
is necessary, the system
transmits the brake fluid pressure control signal to the ABS actuator and electric unit (control
unit) via CAN communication and operates the brake
Following The system controls the electric throttle control actuator and the brake fluid pressure to keep the proper distance between
the vehicles according to the vehicle speed change of the vehicle ahead
Accelera-
tion When a vehicle ahead is not detected because of it changes lanes or own vehicle changes lanes during the following
driving, the system controls the electric throttle control actu
ator in the open direction and accelerates the vehicle to the
set vehicle speed slowly
JPOIA0222ZZ
Revision: 2010 May2011 QX56

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