2011 INFINITI QX56 sensor

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
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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
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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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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CCS
HANDLING PRECAUTIONCCS-27
< SYSTEM DESCRIPTION > [ICC]
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HANDLING PRECAUTION
Precautions for Vehicle-to-V ehicle Distance Control ModeINFOID:0000000006224276
 ICC system is only an aid to assist the driver and is not a collision warning or avoidance device. It is the\
driver's responsibility to stay alert, drive safe ly and be in control of the vehicle at all times.
 The system is primarily intended for use on straight, dry, open roads with light traffic. It is not advisable to
use the system in city traffic or congested areas.
 This system will not adapt automatically to road condi tions. This system should be used in evenly flowing
traffic. Do not use the system on roads with sharp curves, or on icy roads, in heavy rain or in fog.
 The ICC sensor will not detect under most conditions.
- Stationary and slow moving vehicles.
- Pedestrians or objects in the roadway.
- Oncoming vehicles in the some lane.
- Motorcycles traveling offset in the travel lane.
 As there is a performance limit to the distance contro l function, never rely solely on the ICC system. This
system does not correct careless, inattentive or absent -minded driving, or overcome poor visibility in rain,
fog, or other bad weather. Decelerate the vehicle speed by depressing the brake pedal, depending on the
distance to the vehicle ahead and the surrounding circumstances in order to maintain a safe distance
between vehicles.
 If the vehicle ahead comes to a stop, the vehicle decelerat es to a standstill within the limitations of the sys-
tem. 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 movi ng, the driver must depress the brake pedal.
 The system may not detect the vehicle in front of the dr iver in certain road or weather conditions. To avoid
accidents, never use the ICC syst em under the following conditions:
- On roads where the traffic is heavy or there are sharp curves.
- On slippery road surfaces such as on ice or snow, etc.
- On off-road surfaces such as on sand or rock, etc.
- During bad weather (rain, fog, snow, etc.)
- When the windshield wipers are operating at high speed. The ICC system may cancel when the wipers are
set to the AUTO position.
- When strong light (for example, at sunrise or sunset ) is directly shining on the front of the vehicle.
- When rain, snow or dirt adhere to the system sensor.
- On steep downhill roads (the vehicle may go beyond the set vehicle speed and frequent braking may result in overheating the brakes).
- On repeated uphill and downhill roads.
- When traffic conditions make it difficult to keep a proper distance between vehicles because of frequent acceleration or deceleration.
- When towing a trailer or other vehicle
 In some road or traffic conditions, a vehicle or object can unexpectedly come into the sensor detection zone and cause automatic braking. The driver may need to c ontrol the distance from other vehicles using the
accelerator pedal. Always stay alert and avoid using t he ICC system when it is not recommended in this sec-
tion.
 The vehicle-to-vehicle distance control mode uses a sensor located on the front of the vehicle to detect vehi-
cles traveling ahead. The sensor generally detects t he signals returned from the reflectors on a vehicle
ahead. Therefore, if the sensor c annot detect the reflector on the v ehicle ahead, the ICC system may not
maintain the selected distance.
 The following are some conditions in which the sensor cannot detect the signals:
- When the reflector of the vehicle ahead is positioned high on the vehicle (trailer, etc.).
- When the reflector on the vehicle ahead is missing, damaged or covered.
- When the reflector of the vehicle ahead is covered with dirt, snow and road spray.
- When the snow or road spray from traveling vehicles reduces the sensor's visibility.
- When dense exhaust or other smoke (black smoke) fr om vehicles reduces the sensor's visibility.
- When excessively heavy baggage is loaded in the rear seat or the luggage room of own vehicle.
- When the vehicle is towing a trailer, etc.
 The ICC system is designed to automatic ally check the sensor's operation within the limitation of the system.
When the sensor is covered with dirt or is obstruct ed, the system will automatically be canceled. If the sen-
sor is covered with ice, a transparent or translucent vinyl bag, etc., the ICC system may not detect them. In
these instances, the vehicle-to-vehicle distance control mode may not cancel and may not be able to main-
tain the selected following distance from the vehicle ahead. Be sure to check and clean the sensor regularly.
Revision: 2010 May2011 QX56

CCS-28
< SYSTEM DESCRIPTION >[ICC]
HANDLING PRECAUTION
 The ICC system does not control vehicle speed or warn
the driver when own vehicle approaches stationary
and slow moving vehicles. The driver must pay attent ion to vehicle operation to maintain proper distance
from vehicles ahead when approaching toll gates or traffic congestion.
 The detection zone of the ICC sens or is limited. A vehicle ahead
must be in the detection zone for the vehicle-to-vehicle distance
detection mode to maintain the selected distance from the vehicle
ahead. A vehicle ahead may move outside of the detection zone
due to its position within the same lane of travel. Motorcycles may
not be detected in the same lane ahead if they are traveling offset
from the center line of the lane. A vehicle that is entering the lane
ahead may not be detected until the vehicle has completely moved
into the lane. If this occurs, the ICC system may warn the driver by
blinking the system indicator and sounding the chime. The driver
may have to manually control the proper distance away from vehi-
cle traveling ahead.
 When driving on some roads, such as winding, hilly, curved, nar- row roads, or roads which are under construction, the ICC sensor
may detect vehicles in a differ ent lane, or may temporarily not
detect a vehicle traveling ahead. This may cause the ICC system
to decelerate or accelerate the vehicle. The detection of vehicles
may also be affected by vehicle operation (steering maneuver or
traveling position in the lane, et c.) or vehicle condition. If this
occurs, the ICC system may warn the driver by blinking the system
indicator and sounding the chime unexpectedly. The driver will
have to manually control the proper distance away from the vehicle
traveling ahead.
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CCS
HANDLING PRECAUTIONCCS-29
< SYSTEM DESCRIPTION > [ICC]
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 When driving on the freeway at a set speed and approaching a slower traveling vehicle ahead, the ICC will adjust the speed to
maintain the distance, selected by the driver, from the vehicle
ahead. If the vehicle ahead changes lanes or exits the freeway, the
ICC system will accelerate and maintain the speed up to the set
speed. Pay attention to the driving operation to maintain control of
the vehicle as it accelerates to the set speed. The vehicle may not
maintain the set speed on winding or hilly roads. If this occurs, the
driver will have to manually control the vehicle speed.
 The sensor sensitivity can be affected by vehicle oper ation (steering maneuver or driving position in the
lane) or traffic or vehicle condition (for exampl e, if a vehicle is being driven with some damage).
 Normally when controlling the distance to a vehicle ahead, this system automatically accelerates or deceler-
ates own vehicle according to the speed of the vehi cle ahead. Depress the accelerator to properly acceler-
ate own vehicle when acceleration is required for a lane change. Depress the brake pedal when
deceleration is required to maintain a safe distance to the vehicle ahead due to its sudden braking or if a
vehicle cuts in. Always stay alert when using the ICC system.
Precautions for Conventional (Fix ed Speed) Cruise Control ModeINFOID:0000000006224277
 In the conventional (fixed speed) cruise control mode, a warning chime does not sound to warn the driver if
own vehicle is too close to the vehicle ahead, as nei ther the presence of the vehicle ahead nor the vehicle-
to-vehicle distance is detected.
 Pay special attention to the distance between own v ehicle and the vehicle ahead or a collision could occur.
 Always confirm the setting in the ICC system display.
 Do not use the conventional (fixed speed) cruise c ontrol mode when driving under the following conditions:
- When it is not possible to keep the vehicle at a set speed.
- In heavy traffic or in traffic that varies in speed.
- On winding or hilly roads.
- On slippery roads (rain, snow, ice, etc.).
- In very windy areas.
 Doing so could cause a loss of vehicle control and result in an accident.
 To avoid accidentally engaging cruise control, make sure to the MAIN switch OFF when not using ICC sys- tem.
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CCS-32
< SYSTEM DESCRIPTION >[ICC]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
NOTE:
 Causes of the maximum five cancella
tions (system cancel) are displayed.
 The displayed cancellation causes display the number of the ignition switch ON/OFF up to 254. It is fixed to
254 if it is over 254. It returns to 0 when the same cancellation cause is detected again.
Display Items for The Cause of Automatic Cancellation 1
Work support items Description
CAUSE OF AUTO-CANCEL 1 Displays causes of automatic system cancellation occurred during control of the following sys-
tems
 Vehicle-to-vehicle distance control mode
 Conventional (fixed speed) cruise control mode
 Distance Control Assist (DCA)
CAUSE OF AUTO-CANCEL 2 Displays causes of automatic system cancellation occurred during control of the Lane Depar-
ture Prevention (LDP) system
Cause of cancellation
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode Distance Control Assist
Description
OPERATING WIPER ×The wiper operates at HI (it includes when the wiper is operated at
HI with the wiper switch AUTO position)
OPERATING ABS ××ABS function was operated
OPERATING TCS ×××TCS function was operated
OPERATING VDC ×××VDC function was operated
ECM CIRCUIT ××ECM did not permit ICC operation
OPE SW VOLT CIRC ×××The ICC steering switch input voltage is not within standard range
LASER SUNBEAM ××Intense light such as sunlight entered ICC sensor light sensing part
LASER TEMP ××Temperature around ICC sensor became low
SNOW MODE SW ××SNOW mode switch was pressed
OP SW DOUBLE
TOUCH ××
ICC steering switches were pressed at the same time
VHCL SPD DOWN ×××Vehicle speed lower than the speed as follows
 Vehicle-to-vehicle distance control mode is 24 km/h (15 MPH)
 Conventional (fixed speed) cruise control mode is 32 km/h (20
MPH)
WHL SPD ELEC NOISE ×××Wheel speed sensor signal caught electromagnetic noise
VDC/TCS OFF SW ××VDC OFF switch was pressed
VHCL SPD UNMATCH ×××Wheel speed became different from A/T vehicle speed
TIRE SLIP ××Wheel slipped
IGN LOW VOLT ×××Decrease in ADAS control unit IGN voltage
PARKING BRAKE ON ××The parking brake is operating
WHEEL SPD UNMATCH ×××The wheel speeds of 4 wheels are out of the specified values
Revision: 2010 May2011 QX56