cruise control INFINITI QX56 2011 Factory User Guide

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
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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

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
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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) system automatically main-
tains a selected distance from the vehicle traveling in fr ont of own vehicle according to that vehicle's speed (up
to the set speed), or at the set speed when the road ahead is clear.
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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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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.
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CCS
OPERATIONCCS-21
< SYSTEM DESCRIPTION > [ICC]
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OPERATION
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE FUNCTION
VEHICLE-TO-VEHICLE DISTANCE CONT ROL MODE FUNCTION : Switch Name
and Function
INFOID:0000000006224272
VEHICLE-TO-VEHICLE DISTANCE CONT ROL MODE FUNCTION : Menu Displayed
by Pressing Each Switch
INFOID:0000000006224273
ICC SYSTEM DISPLAY (ON THE INFORMATION DISPLAY)
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No. Switch name Description
1 CANCEL switch Deactivates the system without erasing the set speed
2 RESUME/ACCELERATE switch Resumes set speed or increases speed incrementally
 Push and hold the switch to increase the set speed by 5 km/h (5 MPH)
 Push then quickly release the switch to
increase the set speed by 1 km/h (1 MPH)
3 SET/COAST switch Sets desired cruise speed or reduces speed incrementally
 Push and hold the switch to decrease the set speed by 5 km/h (5 MPH)
 Push then quickly release the switch to decrease the set speed by 1 km/h (1 MPH)
NOTE:
The minimum set speed is 32 km/h (20 MPH)
4 MAIN switch Master switch to activate the system (Press for less than 1.5 seconds)
5 DISTANCE switch Changes the following distance from: Long, Middle, Short
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No. Switch name Description 1 ICC system warning lamp Indicates that a malfunction occurs in the ICC system
2 MAIN switch indicator Indicates that th e MAIN switch is ON (ICC system ON)
3 Vehicle ahead detection indicator Indicates whether it detects a vehicle ahead
4 Set distance indicator Indicates the selected distance between vehicles set with the DISTANCE switch
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CCS-22
< SYSTEM DESCRIPTION >[ICC]
OPERATION
SYSTEM CONTROL CONDITION DISPLAY
Quickly push (less than 1.5 seconds) and release the MAIN switch ON.
The MAIN switch indicator (cruise indicator), set distance indicator, own vehicle indicator, and set vehicle
speed indicator come on and ICC system is set to a standby state.
5 Own vehicle indicator Indicates the own vehicle
6 Set vehicle speed indicator Indicates the set vehicle speed
 Indicates 32 km/h (20 MPH) when setting less than 32 km/h (20 MPH)
No. Switch name Description
Condition Display on ICC system display
Standby mode
Control mode Without a vehicle
ahead Set vehicle distance (Long)
Set vehicle distance (Middle)
Set vehicle distance (Short)
When the vehicle speed exceeds the set speed
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Revision: 2010 May2011 QX56