2011 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2011 Factory Service Manual
CCS-26
< SYSTEM DESCRIPTION >[ICC]
OPERATION
WARNING AND AUTOMATIC CANCELLATION DISPLAY
NOTE:
When the ICC system is automatica
lly canceled, the cancellation condition can be displayed on “WORK SU

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HANDLING PRECAUTION
Precautions for Vehicle-to-V ehicle Distance Control ModeINFOID:0000000006224276
ICC sys

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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

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< 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

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When driving on the freeway at a set speed and approaching a slower traveling vehicle ahead, the ICC will a

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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.
JPOIA0219ZZ
Revision: 2010 May2011 QX56

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< SYSTEM DESCRIPTION >[ICC]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
On Board Diagn
osis FunctionINFOID:0000000006227983
DESCRIPTION
The DTC is displayed on th

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It displays for up to 5 minutes and then stops.
If multiple malfunctions exist, up to 6

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It displays for up to 5 minutes and then stops.
If multiple malfunctions exist, up to 6 DTCs can be stored in memory at the most, and the most recent
one is displayed first.
WHEN THE ON BOARD SELF-DIAGNOSIS DOES NOT START
If the on board self-diagnosis does not start, check the following items.
HOW TO ERASE ON BOARD SELF-DIAGNOSIS
1. Turn the ignition switch OFF.
2. Start the engine, and then start the on board self-diagnosis.
3. Press the CANCEL switch 5 times, and then press the DIS-
TANCE switch 5 times under the condition that the on board
self-diagnosis starts.
NOTE:
Complete the operation within 10 seconds after pressing the
CANCEL switch first.
If the operation is not completed within 10 seconds, repeat the procedure from step 1.
4. DTC 55 is displayed after erasing. NOTE:
DTCs for existing malfunction can not be erased.
5. Turn ignition switch OFF, and finish the diagnosis.
CONSULT-III Function (ICC/ADAS)INFOID:0000000006227984
APPLICATION ITEMS
CONSULT-III performs the following functions via CAN communication using ADAS control unit.
WORK SUPPORT
Assumed abnormal part Inspection item
Information display Combination meter malfunction Check that the self-diagnosis function of the combina-
tion meter operates. Refer to
MWI-29, "
On Board Diag-
nosis Function"
ICC steering switch malfunction
Perform the inspection for DTC“C1A06”. Refer to CCS-
94, "Diagnosis Procedure"Harness malfunction between ICC steering switch and ECM
ECM malfunction
ADAS control unit malfunction Check power supply and ground circuit of ADAS con-
trol unit. Refer to DAS-62, "
Diagnosis Procedure".
Perform SELF-DIAGNOSIS for “ICC/ADAS”with
CONSULT-III, and then check the malfunctioning
parts. Refer to DAS-38, "
DTC Index".
PKIB8373E
Diagnosis mode Description
Work Support Displays causes of automatic system cancellation occurred during system control
Self Diagnostic Result Displays the name of a malfunctioning system stored in the ADAS control unit
Data Monitor Displays ADAS control unit input/output data in real time
Active Test Enables an operational check of a load by transmitting a driving signal from the ADAS control unit to
the load
Ecu Identification Displays ADAS control unit part number
CAN Diag Support Monitor Displays a reception/transmission state of CAN communication and ITS communication
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
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 th

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

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INFINITI QX56 2011 Factory Service Manual
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Display Items for The Cause of Automatic Cancellation 2
SELF DIAGNOSTIC RESULT
Refer to DAS

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Display Items for The Cause of Automatic Cancellation 2
SELF DIAGNOSTIC RESULT
Refer to DAS-38, "DTC Index".
DATA MONITOR
INCHING LOST ×A vehicle ahead is not detected during the following driving when
the vehicle speed is approximately 24 km/h (15 MPH) or less
CAN COMM ERROR ×××ADAS control unit received an abnormal signal with CAN commu-
nication
ABS/TCS/VDC CIRC ×××An abnormal condition occurs in VDC/TCS/ABS system
ECD CIRCUIT ×××An abnormal condition occurs in ECD system
ASCD VHCL SPD DTAC ×Vehicle speed is detached from set vehicle speed
ASCD DOUBLE COMD ×Cancel switch and operation switch are detected simultaneously
APA HI TEMP ×The accelerator pedal actuator integrated motor temperature is
high
ICC SENSOR CAN
COMM ERR ××Communication error between ADAS control unit and the ICC sen-
sor
4WD LOCK MODE ×××Shifting of the 4WD shift switch to 4H or 4L
ABS WARNING LAMP ××ABS warning lamp ON
NO RECORD ××× —
Cause of cancellation Description
OPE VDC/TCS/ABS 1 The activation of VDC, TCS, or ABS during LDP system control
Vehicle dynamics Vehicle behavior exceeds specified value
Steering speed Steering speed was more than the specified value in evasive direction
End by yaw angle Yaw angle was the end of LDP control
Departure yaw large Detected more than the specified value of yaw angle in departure direction
ICC WARNING Target approach warning of ICC system, IBA system or FCW system was activated
CURVATURE Road curve was more than the specified value
Steering angle large Steering angle was more than the specified value
Brake is operated Brake pedal was operated
IGN LOW VOLT Decrease in ADAS control unit IGN voltage
Lateral offset Distance of vehicle and lane was detached in lateral direction more than the specified value
Lane marker lost Lane camera unit lost the trace of lane marker
Lane marker unclear Detected lane marker was unclear
Yaw acceleration Detected yawing speed was more than the specified value
Deceleration large Deceleration in a longitudinal direction was more than the specified value
Accel is operated Accelerator pedal was depressed
Departure steering Steering wheel was steered more than the specified value in departure direction
Evasive steering Steering wheel was steered more than the specified value in the evasive direction
R range Selector lever was operated to R range
Parking brake drift Rear wheels lock was detected
Not operating condition Did not meet the operating condition (vehicle speed, turn signal operation, etc)
SNOW MODE SW SNOW mo de switch was pressed
VDC OFF SW VDC OFF switch was pressed
OPE VDC/ABS 2 The activation of VDC or ABS duri ng a standby time of LDP system control
4WD LOCK MODE Shifting of the 4WD shift switch to 4H or 4L
NO RECORD —
Revision: 2010 May2011 QX56

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