2011 INFINITI QX56 steering

DAS-228
< SYSTEM DESCRIPTION >[FCW]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
Monitored item
[Unit]
ALL SIG(ICC)
MAIN SIG (ICC)
MAIN SIG
(LDW/LDP)
MAIN SIG
(BSW/BSI)
Description
MAIN SW
[On/Off] ×× × × Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
SET/COAST SW
[On/Off] ×× Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
CANCEL SW
[On/Off] ××
Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
RESUME/ACC SW
[On/Off] ×× Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
DISTANCE SW
[On/Off] × Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
CRUISE OPE
[On/Off] ××
Indicates whether controlling or not (ON means “controlling”)
BRAKE SW
[On/Off] ×× × × Indicates [On/Off] status as judged from ICC brake switch signal (ECM transmits
ICC brake switch signal through CAN communication)
STOP LAMP SW
[On/Off] ×× × × Indicates [On/Off] status as judged from stop lamp switch signal (ECM transmits
stop lamp switch signal through CAN communication)
IDLE SW
[On/Off] ×
Indicates [On/Off] status of idle switch read from ADAS control unit through CAN
communication (ECM transmits On/Off status through CAN communication)
SET DISTANCE
[Short/Mid/Long] ××
Indicates set distance memorized in ADAS control unit
CRUISE LAMP
[On/Off] ××
Indicates [On/Off] status of MAIN switch indicator output
OWN VHCL
[On/Off] ×
Indicates [On/Off] status of own vehicle indicator output
VHCL AHEAD
[On/Off] ×
Indicates [On/Off] status of vehicle ahead detection indicator output
ICC WARNING
[On/Off] ×
Indicates [On/Off] status of ICC system warning lamp output
VHCL SPEED SE
[km/h] or [mph] ×× × × Indicates vehicle speed calculated from ADAS control unit through CAN commu-
nication [ABS actuator and electric unit (c
ontrol unit) transmits vehicle speed sig-
nal (wheel speed) through CAN communication]
SET VHCL SPD
[km/h] or [mph] ××
Indicates set vehicle speed memorized in ADAS control unit
BUZZER O/P
[On/Off] ×
Indicates [On/Off] status of ICC warning chime output
THRTL SENSOR
[deg] ××
NOTE:
The item is displayed, but it is not monitored
ENGINE RPM
[rpm] × Indicates engine speed read from ADAS control unit through CAN communication
(ECM transmits engine speed signal through CAN communication)
WIPER SW
[OFF/LOW/HIGH] × Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request sig-
nal through CAN communication)
YAW R AT E
[deg/s] ×
NOTE:
The item is displayed, but it is not monitored
BA WARNING
[On/Off] ×
Indicates [On/Off] status of IBA OFF indicator lamp output
STP LMP DRIVE
[On/Off] ××
Indicates [On/Off] status of ICC brake hold relay drive output
D RANGE SW
[On/Off] × Indicates [On/Off] status of “D” or “M” positions read from ADAS control unit
through CAN communication; ON when position “D” or “M” (TCM transmits shift
position signal through CAN communication).
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-229
< SYSTEM DESCRIPTION > [FCW]
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NP RANGE SW
[On/Off] × Indicates shift position signal read from ADAS control unit through CAN commu-
nication (TCM transmits shift position signal through CAN communication)
PKB SW
[On/Off] × Parking brake switch status [On/Off] judged from the parking brake switch signal
that ADAS control unit readout via CAN communication is displayed (Combination
meter transmits the parking brake switch signal via CAN communication)
PWR SUP MONI
[V] ××
Indicates IGN voltage input by ADAS control unit
VHCL SPD AT
[km/h] or [mph] × Indicates vehicle speed calculated from A/T vehicle speed sensor read from
ADAS control unit through CAN communication (TCM transmits A/T vehicle speed
sensor signal through CAN communication)
THRTL OPENING
[%] ×× Indicates throttle position read from ADAS control unit through CAN communica-
tion (ECM transmits accelerator pedal position signal through CAN communica-
tion).
GEAR
[1, 2, 3, 4, 5, 6, 7] × Indicates A/T gear position read from ADAS control unit through CAN communi-
cation (TCM transmits current gear position signal through CAN communication)
MODE SIG
[OFF, ICC, ASCD] × Indicates the active mode from ICC or ASCD [conventional (fixed speed) cruise
control mode]
SET DISP IND
[On/Off] ×
Indicates [On/Off] status of SET switch indicator output
DISTANCE
[m] ×
Indicates the distance from the vehicle ahead
RELATIVE SPD
[m/s] ×
Indicates the relative speed of the vehicle ahead
DYNA ASIST SW
[On/Off] ×× ×
Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)
DCA ON IND
[On/Off] ×
The status [ON/OFF] of DCA system switch indicator output is displayed
DCA VHL AHED
[On/Off] × The status [ON/OFF] of vehicle ahead detection indicator output in DCA system
is displayed
IBA SW
[On/Off] ××
Indicates [On/Off] status of IBA OFF switch
FCW SYSTEM ON
[On/Off] ××
Indicates [On/Off] status of FCW system
APA TEMP
[ ° C] × Accelerator pedal actuator integrated motor temperature that the ADAS control
unit readout via ITS communication is displayed (Accelerator pedal actuator trans-
mits the integrated motor temperature via ITS communication)
APA PWR
[V] × Accelerator pedal actuator power supply voltage that the ADAS control unit read-
out via ITS communication is displayed (Accelerator pedal actuator transmits the
power supply voltage via ITS communication)
LDW SYSTEM ON
[On/Off] ×
Indicates [On/Off] status of LDW system
LDW ON LAMP
[On/Off] ×
Indicates [On/Off] status of waning systems ON indicator output
LDP ON IND
[On/Off] ×
Indicates [On/Off] status of LDP ON indicator lamp (Green) output
LANE DPRT W/L
[On/Off] ×
Indicates [On/Off] status of lane departure warning lamp (Yellow) output
LDW BUZER OUT-
PUT
[On/Off] ×
Indicates [On/Off] status of warning buzzer output
Monitored item
[Unit]
ALL SIG
(ICC)
MAIN SIG (ICC)
MAIN SIG
(LDW/LDP)
MAIN SIG
(BSW/BSI)
Description
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ICC SENSOR)DAS-235
< SYSTEM DESCRIPTION > [FCW]
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DIAGNOSIS SYSTEM (ICC SENSOR)
CONSULT-III Function (LASER)INFOID:0000000006228179
APPLICATION ITEMS
CONSULT-III performs the following functions via CAN communication with ADAS control unit and the com-
munication with ICC sensor.
WORK SUPPORT
Laser Beam Adjust
Refer to CCS-72, "Description".
SELF DIAGNOSTIC RESULT
Refer to CCS-55, "DTC Index".
DATA MONITOR
Diagnosis mode Description
Work Support It can monitor the adjustment direction indication in order to perform the laser beam aiming operation
smoothly
Self Diagnostic Result Displays malfunctioning system memorized in ICC sensor
Data Monitor Displays real-time input/output data of ICC sensor
Ecu Identification Displays ICC sensor part number
CAN Diag Support Monitor The results of transmit/receive diagnosis of ITS communication can be read
Work support items Description
LASER BEAM ADJUST Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction
Monitored item
[Unit] Description
VHCL SPEED SE
[km/h] or [mph] Vehicle speed judged from a vehicle speed signal read by the ICC sensor via ITS communica-
tion is displayed [ADAS control unit receives a vehicle speed signal from ABS actuator and
electric unit (control unit) via CAN communication and transmits the calculated vehicle speed
to ICC sensor via ITS communication]
YAW R AT E
[deg/s] Indicates yaw rate read from ADAS control unit through ITS communication (ADAS control unit
receives yaw rate signal from ABS actuator and electric unit (control unit) via CAN communi-
cation and transmits yaw rate calculated by the ADAS control unit)
Yaw rate judged from a yaw rate signal read by ICC sensor via ITS communication is displayed
[ADAS control unit receives a yaw
rate signal from ABS actuator and electric unit (control unit)
via CAN communication and transmits the calculated yaw rate to ICC sensor via ITS commu-
nication]
PWR SUP MONI
[V] Indicates IGN voltage input by ICC sensor
DISTANCE
[m] Indicates the distance from the vehicle ahead
RELATIVE SPD
[m/s] Indicates the relative speed of the vehicle ahead
LASER OFFSET
[m] NOTE:
The item is indicated, but not used
LASER HEIGHT
[m] NOTE:
The item is indicated, but not used
STEERING ANGLE
[deg] The steering angle is displayed
STRG ANGLE SPEED
[deg/s] The steering angle speed is displayed
Revision: 2010 May2011 QX56

DAS-248
< ECU DIAGNOSIS INFORMATION >[FCW]
ICC SENSOR
ICC SENSOR
Reference ValueINFOID:0000000006228180
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item Condition Value/Status
VHCL SPEED SE While driving Value of vehicle
speed signal
(wheel speed)
YAW RATE While driving Vehicle stopped 0.0
Vehicle turning right Positive value
Vehicle turning left Negative value
PWR SUP MONI Ignition switch ON Power supply
voltage value of ICC sensor
DISTANCE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected
Displays the dis-
tance from the
preceding vehi- cle
When a vehicle ahead is not detected 0.0
RELATIVE SPD Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected
Displays the rel-
ative speed
When a vehicle ahead is not detected 0.0
LASER OFFSET NOTE:
The item is indicated, but not used
—
LASER HEIGHT NOTE:
The item is indicated, but not used —
STEERING ANGLE Ignition switch ON When setting the steering wheel in straight-ahead posi-
tion
0.0
When turning the steering wheel 90 ° rightward +90
When turning the steering wheel 90 ° leftward -90
STRG ANGLE
SPEED Ignition switch ON At the time of turning the steering wheel Steering wheel
turning speed is
displayed
L/R ADJUST Ignition switch ON At the completion of laser beam adjustment Horizontal cor-
rection value is
displayed
U/D ADJUST Ignition switch ON At the completion of laser beam adjustment Vertical correc-
tion value is dis-
played
JPOIA0105ZZ
Revision: 2010 May2011 QX56

DAS-270
< SYMPTOM DIAGNOSIS >[FCW]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006223695
PRECAUTIONS FOR FORWARD COLLISION WARNING (FCW)
 FCW system is intended to warn the driver before a col
lision but will not avoid a collision. It is the drive's
responsibility to stay alert, drive safely and be in control of the vehicle at all times.
 As there is a performance limit, the FCW system may not provide a warning in certain conditions.
 The FCW system will not detect the following objects.
- Pedestrians, animals, or obstacles in the roadway.
- Oncoming vehicles in the same lane
 FCW system will not detect under the following conditions.
- When the sensor gets dirty, it is impossibl e to detect the distance from the vehicle ahead.
- When driving into a strong light (i.e. sunlight)
 The sensor generally detects signals returned from t he reflectors on a vehicle ahead. Therefore, the FCW
system may not warn properly under the following conditions:
- When the reflectors of the vehicle ahead are positioned hi gh or close to each other (including a small vehicle
such as motorcycles).
- When the sensor gets dirty or it is impossible to detect the distance to the vehicle ahead.
- When the reflectors on the vehicle ahead is missing, damaged or covered.
- When the reflector of the vehicle ahead is covered with dirt, snow or road spray.
- When visibility is low (such as rain, fog, snow, etc.).
- When snow or road spray from traveling vehicles are splashed.
- When dense exhaust or other smoke (black smoke) from vehicles reduces the visibility of the sensor.
- When excessively heavy baggage is loaded in the rear seat or the trunk room of own vehicle.
- When abruptly accelerating or decelerating.
- On steep downhill or roads with sharp curves.
- When there is a highly reflective object near the vehicle ahead. i.e.) very close to other vehicle, signboard, etc.
- When own vehicle are towing a trailer.
 Depending on certain road conditions (curved, beginning of a curve), vehicle conditions (steering position,
vehicle position), or preceding vehicl e's conditions (position in lane, etc.), the FCW system may not function
properly. The FCW system may detect highly reflective obj ects such as reflectors, signs, white markers, and
other stationary objects on the road or near the traveling lane, and provide unnecessary warning.
 The FCW system may not function in offset conditions.
 The FCW system may not functi on when the distance to the vehicle ahead is extremely close.
 The FCW system is designed to automatically check the s ensor's functionality. If the sensor is covered with
ice, a transparent or translucent plastic bag, etc., the system may not detect them. In these instances the
FCW system may not be able to warn properly. Be sure to check and clean the sensor regularly.
 Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
 A sudden appearance of the vehicle in front (i.e.: w hen a vehicle abruptly cuts in) may not be detected and
the system may not warn soon enough.
 The FCW system will be canceled autom atically with a chime sound and the IBA OFF indicator light will illu-
minate under the following conditions:
- When the sensor window is dirty
- When the FCW system malfunctions
Revision: 2010 May2011 QX56

DAS
COMPONENT PARTSDAS-275
< SYSTEM DESCRIPTION > [LDW & LDP]
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LANE DEPARTURE PREVENTION (LDP) SYSTEM
LANE DEPARTURE PREVENTION (LDP) SYSTEM : Component Parts Location
INFOID:0000000006223702
Warning systems switch Inputs the warning systems switch signal to ADAS control unit
Warning systems ON indicator
(On the warning systems switch) Turns on the warning systems ON indicator, according to an warning systems ON indicator
signal received from the ADAS control unit
Warning buzzer Activates the warning buzzer, according to a warning buzzer signal received from the ADAS
control unit
Combination meter Turns the lane departure warning lamp ON/OFF according to the signals from ADAS control
unit via CAN communication
BCM Transmits the turn indicator signal to ADAS control unit via CAN communication Component Description
1. Lane camera unit 2. Dynamic driver assistance switch
(On the ICC steering switch)3.  Lane departure warning lamp (Yel-
low)
 LDP ON indicator (Green)
(On the combination meter)
4. Transfer control unit Refer to DLN-10, "
Component Parts
Location"
5. AV control unit
Refer to AV- 9 , "
Component Parts Lo-
cation"
6. ECM
Refer to EC-16, "
Component Parts
Location"
7. TCM
Refer to TM-10, "
A/T CONTROL
SYSTEM : Component Parts Loca-
tion"
8. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location"
9. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Compon ent Parts Loca-
tion"
10. Warning buzzer 11. Steering angle sensor
Refer to BRC-10, "
Component Parts
Location"
12. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Front of map lamp B. Behind instrument lower panel (LH)
JSOIA0368ZZ
Revision: 2010 May2011 QX56

DAS-276
< SYSTEM DESCRIPTION >[LDW & LDP]
COMPONENT PARTS
LANE DEPARTURE PREVENTION (LDP ) SYSTEM : Component Description
INFOID:0000000006223703
Component Description
ADAS control unit  Judges lane departure based on each signal and calculates yaw moment necessary to generate
force toward the direction to recover the vehicle from the lane departure
 Outputs the warning buzzer signal to the warning buzzer
 Transmits a target yaw moment signal to the ABS actuator and electric unit (control unit) via CAN communication
 Transmits the lane departure warning lamp signal and LDP ON indicator lamp signal to combina- tion meter via CAN communication
Lane camera unit  Detects the lane marker in travel lane
 Transmits the detected lane condition signal to ADAS control unit via ITS communication
ABS actuator and electric unit
(control unit)  Transmits the vehicle speed signal (wheel speed) to ADAS control unit via CAN communication
 Transmits the yaw rate signal and side G sensor signal to ADAS control unit via CAN communi-
cation
 Receives a target yaw moment signal from the ADAS control unit via CAN communication and
controls brake pressure of four wheels, respectively
Warning buzzer Activates the warning buzzer, according to a warning buzzer signal received from the ADAS control
unit
Dynamic driver assistance
switch
(On the ICC steering switch) ECM receives an ICC steering switch (dynamic driver assistance switch) signal and transmits the
signal to ADAS control unit via CAN communication
Combination meter Turns on the following indicator/warning lamp, according to a signal received for the ADAS control
unit via CAN communication
 LDP ON indicato
r lamp (Green)
 Lane departure warning lamp (Yellow)
BCM Transmits the turn indicator signal to ADAS control unit via CAN communication
ECM Transmits the accelerator pedal position signal, engine speed signal and ICC steering switch signal
(dynamic driver assistance switch signal) to ADAS control unit via CAN communication
Steering angle sensor Transmits the steering angle sensor signal to ADAS control unit via CAN communication
TCM Transmits the output shaft revolution signal, input speed signal, current gear position signal and shift
position signal to ADAS control unit via CAN communication
Transfer control unit Transmits the current 4WD mode signal to ADAS control unit via CAN communication
AV control unit Transmits the system selection signal to ADAS control unit via CAN communication
Revision: 2010 May2011 QX56

DAS-280
< SYSTEM DESCRIPTION >[LDW & LDP]
SYSTEM
LANE DEPARTURE WARNING (LDW) SYSTEM : Fail-safe (Lane Camera Unit)
INFOID:0000000006223706
FAIL-SAFE CONTROL BY DTC
If a malfunction occurs in the lane camera unit, ADAS control unit cancels control, and turns ON the lane
departure warning lamp in the combination meter.
TEMPORARY DISABLED STATUS AT HIGH TEMPERATURE
 If the vehicle is parked in direct sunlight under high temperature conditions, the system may be deactivated
automatically. And the lane departure warning lamp (yellow) in the combination meter will blinks.
 When interior temperature is reduced, the system will resume operation automatically and the lane depar-
ture warning lamp (yellow) in the combination meter will stop blinking.
LANE DEPARTURE PREV ENTION (LDP) SYSTEM
LANE DEPARTURE PREVENTION (LDP ) SYSTEM : System DescriptionINFOID:0000000006223707
SYSTEM DIAGRAM
ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM
Input Signal Item
JSOIA0286GB
Transmit unit Signal name Description
ECM CAN com-
munica-
tionAccelerator pedal position signal Receives accelerator pedal position (angle)
ICC steering switch
signal
Dynamic driver as-
sistance switch sig-
nal Receives the operational state of the ICC steering
switch
Engine speed signal Receives engine speed
Snow mode signal Receives an operational state of the snow mode
Revision: 2010 May2011 QX56