2011 INFINITI QX56 brake

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 (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

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

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

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 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
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Revision: 2010 May2011 QX56

CCS-18
< SYSTEM DESCRIPTION >[ICC]
SYSTEM
 When the SET/COAST switch is pushed under the following condi-
tions, the system cannot be set. A warning chime will sound and
the set speed indicator and own vehicle indicator will blink.
- When the SNOW mode switch is ON (To use the ICC system, turn
OFF the SNOW mode switch, push the MAIN switch to turn OFF
the ICC system and reset the ICC system by pushing the MAIN
switch again.)
- When the 4WD shift switch is not AUTO position. (To use the ICC
system, shift the AUTO position, push the MAIN switch to turn OFF
the ICC system and reset the ICC system by pushing the MAIN
switch again.)
- When the VDC is OFF. (To use the ICC system, turn ON the VDC system, push the MAIN switch to turn OFF the I CC system and reset the ICC system by pushing the MAIN
switch again.)
- When ABS or VDC (including the TCS) operates.
- When driving into a strong light (i.e., sunlight).
- When the wheel is slipping. (To use the ICC system, make sure the wheels are no longer spinning, push the
MAIN switch to turn OFF the ICC system and rese t the ICC system by pushing the MAIN switch again.)
Cancel Conditions
1. When CANCEL switch is pressed.
2. When brake pedal is depressed.
3. When the vehicle ahead is not detected below the speed of 24 km/h (15 MPH).
4. When the selector lever is not in the “D” position or manual mode.
5. When the parking brakes are applied.
6. When the system judges the vehicle is at standstill.
7. When the front wiper s are operating at HI.
(If the vehicle is equipped with a rain sensing auto-wi per, the system may cancel when the wipers are set
to AUTO.)
8. When the SNOW mode switch is turned ON.
9. When 4WD shift switch is not AUTO position
10. When ABS or VDC (including the TCS) operates.
11. When the MAIN switch is turned OFF.
12. When a wheel slips.
13. When driving into a strong light (i.e., sunlight).
14. When the VDC is turned OFF.
15. When the system malfunction occurs.
CONVENTIONAL (FIXED SPEED) CR UISE CONTROL MODE FUNCTION
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE FUNCTION : System
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CCS-20
< SYSTEM DESCRIPTION >[ICC]
SYSTEM
In the conventional (fixed speed) cruise control mode,
a warning chime does not sound to warn driver if own
vehicle are too close to the vehicle ahead, as neither the presence of the vehicle ahead nor the vehicle-to-
vehicle distance is detected.
OPERATION DESCRIPTION
To turn ON the conventional (fixed speed) cruise cont rol mode, push and hold the MAIN switch for longer than
approximately 1.5 seconds when ICC system is OFF.
When pushing the MAIN switch ON, the ICC system display and the MAIN switch indicator are displayed on
the information display.
After hold the MAIN switch ON for longer than approxim ately 1.5 seconds, the ICC system display goes out.
The MAIN switch indicator stays lit and brings the system to standby state.
NOTE:
 To turn on the vehicle-to-vehicle distance control mode again, turn OFF the system and quickly push (less
than 1.5 seconds) the MAIN switch.
 When the DCA system is ON, the conventional (fixed speed) cruise control mode cannot be turned on even
though the MAIN switch is pushed and held.
 To turn ON the conventional (fixed speed) cruise control mode, turn OFF the DCA system. Refer to DAS-68,
"System Description".
ADAS control unit performs the control as per the following:
Set Condition
When the system is under a standby state and the vehi cle speed is between approximately 40 km/h (25 MPH)
and 144 km/h (90 MPH), pushing the SET/COAST switch will start system control.
If the system is canceled by conditions 1-6 below, the sy stem will resume control at the last set cruising speed
by pushing the RESUME/ACCELERATE switch.
Cancel conditions1. When CANCEL switch is pressed.
2. When brake pedal depressed.
3. When the vehicle speed falls below approximately 32 km/h (20 MPH).
4. When the vehicle slows down more than 13 km/h (8 MPH) below the set speed.
5. When the selector lever is not in the “D” position or manual mode.
6. When the parking brakes are applied.
7. When the MAIN switch is turned OFF.
8. When VDC (including the TCS) operates.
9. When a wheel slips.
10. When the system malfunction occurs.
Constant
speed Comparing the set vehicle speed with the current vehicle speed, transmits the command to ECM via CAN communication
to reach the set vehicle speed, and controls the electronic throttle control actuator.
Revision: 2010 May2011 QX56

CCS
OPERATIONCCS-23
< SYSTEM DESCRIPTION > [ICC]
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NOTE:
The display of the DCA system is given priority when the DCA system is ON in a standby mode. (The set vehi-
cle speed indicator, set distance indicator, and own vehicle indicator are not displayed).
APPROACH WARNING DISPLAY
If own vehicle comes closer to a vehicle ahead due to rapi d deceleration of that vehicle or if another vehicle
cuts in, the system warns the driver with the chim e and ICC system display. Decelerate by depressing the
brake pedal to maintain a safe vehicle distance if:
 The chime sounds.
 The vehicle ahead detection indicator and set distance indicator blink.
The warning chime may not sound in some cases when there is a short distance between vehicles. Some
examples are:
 When the vehicles are traveling at the same s peed and the distance between vehicles is not changing.
 When the vehicle ahead is traveling faster and the distance between vehicles is increasing.
 When a vehicle cuts in at near own vehicle.
The warning chime will not sound when own vehicle approac hes vehicles that are parked or moving slowly.
The warning chime will not sound when the accele rator pedal is depressed, overriding the system.
The approach warning chime may sound and the system disp lay may blink when the ICC sensor detects some
reflectors which are fitted on vehicles in other lanes or on the side of the road.
This may cause the ICC system to dec elerate or accelerate the vehicle.
The ICC sensor may detect these reflectors when the vehicle is driven on winding roads, hilly roads or when
entering or exiting a curve.
The ICC sensor may also detect reflectors on narrow roads or in road construction zones.
In these cases driver will have to manually control the proper distance ahead of own vehicle.
Also, the sensor sensitivity can be affected by vehicle operation (steering maneuver or driving position in the
lane) or traffic or vehicle condition (for example, if a vehicle is being driven with some damage).
Control mode With a vehicle
aheadSet vehicle distance (Long)
Set vehicle distance (Middle)
Set vehicle distance (Short)
When the vehicle speed exceeds the set speed
Condition Display on ICC system display
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Revision: 2010 May2011 QX56

CCS-24
< SYSTEM DESCRIPTION >[ICC]
OPERATION
WARNING LAMP AND AUTOMATIC CANCELLATION DISPLAY
NOTE:
Condition Display on ICC system display
When own vehicle comes closer to the vehicle ahead and it is judged that the distance be-
tween the vehicles is not sufficient
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Condition Description Display on ICC system display
Warning
display  When the VDC is turned OFF
 When the VDC or ABS (in-
cluding the TCS) operates
 When a wheel slips
 When the 4WD shift switch is not AUTO
 When the SNOW mode switch is turned ON
 When driving into a strong light (i.e., sunlight) A chime sounds and the control is automatically
canceled.
NOTE:
When the conditions listed above are no longer
present, turn the system OFF using the MAIN
switch.
Turn the ICC system back on to use the system.
When the sensor window is
dirty, making it impossible to de-
tect a vehicle ahead. A chime sounds and the control is automatically
canceled.
NOTE:
Park the vehicle in a safe place, turn the engine
OFF.
Clean the sensor window with a soft cloth and
then perform the settings again.
When the ICC system is mal-
functioning A chime sounds and the control is automatically
canceled.
NOTE:
Turn the engine OFF and restart engine. If there
is no malfunction, it is possible to set the system.
Automatic
cancella-
tion display  When brake pedal is de-
pressed
 When CANCEL switch is pressed
 When a vehicle ahead is not
detected below the speed of
24 km/h (15 MPH)
 When the system judges the
vehicle is at standstill
 When the selector lever is not in “D” position or manual
mode
 When the front wipers are op- erating at HI
(If the vehicle is equipped
with a rain sensing auto-wip-
er, the system may cancel
when the wipers are set to
AUTO)
 When the parking brake are
applied A chime sounds and the control is automatically
canceled.
NOTE:
 The system will be in a standby, after the control
is automatically canceled.
 A chime sounds when the control is automati-
cally canceled, except when brake pedal is de-
pressed or when CANCEL switch is pressed.
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Revision: 2010 May2011 QX56