2011 INFINITI QX56 Head lamp

DAS-82
< SYSTEM DESCRIPTION >[DCA]
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-83
< SYSTEM DESCRIPTION > [DCA]
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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
ADAS CONTROL UNITDAS-93
< ECU DIAGNOSIS INFORMATION > [DCA]
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ECU DIAGNOSIS INFORMATION
ADAS CONTROL UNIT
Reference ValueINFOID:0000000006223510
VALUES ON THE DIAGNOSIS TOOL
Monitor item Condition Value/Status
MAIN SW Ignition switch ON When MAIN switch is pressed On
When MAIN switch is not pressed Off
SET/COAST SW Ignition switch ON When SET/COAST switch is pressed On
When SET/COAST switch is not pressed Off
CANCEL SW Ignition switch ON When CANCEL switch is pressed On
When CANCEL switch is not pressed Off
RESUME/ACC SW Ignition switch ON When RESUME/ACCELERATE
switch is pressed On
When RESUME/ACCELERATE switch is not pressed Off
DISTANCE SW Ignition switch ON When DISTANCE swit
ch is pressed On
When DISTANCE switch is not pressed Off
CRUISE OPE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When ICC system is controlling On
When ICC system is not controlling Off
BRAKE SW Ignition switch ON When brake pedal is depressed Off
When brake pedal is not depressed On
STOP LAMP SW Ignition switch ON When brake pedal is depressed On
When brake pedal is not depressed Off
IDLE SW Engine running Idling On
Except idling (depress accelerator pedal) Off
SET DISTANCE  Start the engine and turn the
ICC system ON
 Press the DISTANCE switch to change the vehi-
cle-to-vehicle distance set-
ting When set to “long” Long
When set to “middle” Mid
When set to “short” Short
CRUISE LAMP Start the engine and press
MAIN switch ICC system ON
(MAIN switch indicator ON)
On
ICC system OFF
(MAIN switch indicator OFF) Off
OWN VHCL Start the engine and press
MAIN switch ICC system ON
(Own vehicle indicator ON)
On
ICC system OFF
(Own vehicle indicator OFF) Off
VHCL AHEAD Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected (vehicle ahead de-
tection indicator ON)
On
When a vehicle ahead is not detected (vehicle ahead
detection indicator OFF) Off
ICC WARNING Start the engine and press
MAIN switch When ICC system is malfunctioning
(ICC system warning lamp ON)
On
When ICC system is normal
(ICC system warning lamp OFF) Off
Revision: 2010 May2011 QX56

DAS
ADAS CONTROL UNITDAS-95
< ECU DIAGNOSIS INFORMATION > [DCA]
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GEAR While driving Displays the
gear position
MODE SIG Start the engine and press
MAIN switch When ICC system is deactivated Off
When vehicle-to-vehicle distance control mode is acti-
vated
ICC
When conventional (fixed speed) cruise control mode is
activated ASCD
SET DISP IND  Drive the vehicle and acti-
vate the conventional (fixed
speed) cruise control mode
 Press SET/COAST switch SET switch indicator ON On
SET switch indicator OFF Off
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
DYNA ASIST SW Ignition switch ON When dynamic driver assistance switch is pressed On
When dynamic driver assistance switch is not pressed Off
DCA ON IND Start the engine and press dy-
namic driver assistance switch
(When DCA setting is ON) DCA system OFF
(DCA system switch indicator OFF)
Off
DCA system ON
(DCA system switch indicator ON) On
DCA VHL AHED Drive the vehicle and activate
the DCA system When a vehicle ahead is not detected (vehicle ahead
detection indicator OFF)
Off
When a vehicle ahead is detected (vehicle ahead de-
tection indicator ON) On
IBA SW Ignition switch ON When the IBA OFF switch is pressed On
When the IBA OFF switch is not pressed Off
FCW SYSTEM ON Ignition switch ON When the FCW system is ON
(Warning systems ON indicator ON)
On
When the FCW system is OFF
(Warning systems ON indicator OFF) Off
APA TEMP Engine running Display the ac-
celerato
r pedal
actuator inte- grated motor temperature
APA PWR Ignition switch ON Power supply
voltage value of
accelerator ped- al actuator
LDW SYSTEM ON Ignition switch ON When the LDW system is ON
(Warning systems ON indicator ON)
On
When the LDW system is OFF
(Warning systems ON indicator OFF) Off
LDW ON LAMP Ignition switch ON Warning systems ON indicator ON On
Warning systems ON indicator OFF Off
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56

DAS
DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)DAS-201
< SYMPTOM DIAGNOSIS > [DCA]
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DCA SYSTEM NOT ACTIVA TED (SWITCH IS ON)
DescriptionINFOID:0000000006223655
The dynamic driver assistance switch can be tu rned ON/OFF, but the DCA system does not operate.
NOTE:
Never start the operation under the following conditions. No operation condition
 When the brake pedal depressed
 When the ICC system is set
 When the system judges that the vehicle co mes to a standstill by the system control
 When the vehicle ahead is not detected Operation cancellation condition
 When the dynamic driver assistance switch is turned to OFF
 When the system malfunction occurs
 When ABS or VDC (including the TCS) operates
 When the VDC is turned OFF
 When driving into a strong light (i.e., sunlight)
 When the ICC sensor body window is dirty and the measurement of the distance between the vehicles
becomes difficult
 When ABS warning lamp is ON
 When the SNOW mode switch is turned ON
 When the 4WD shift switch is not AUTO position
Diagnosis ProcedureINFOID:0000000006223656
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
Check if there is any cancellation cause in the “CAUSE OF AUTO-CANCEL” on “WORK SUPPORT” of “ICC/
ADAS” with CONSULT-III.
Is it displayed?
Not displayed>>GO TO 2.
“OPE SW VOLT CIRC”>>Refer to DAS-138, "
DTC Logic".
“VHCL SPD UNMATCH”>>Refer to DAS-131, "
DTC Logic".
“IGN LOW VOLT”>>Refer to DAS-130, "
DTC Logic".
“CAN COMM ERROR”>>Refer to DAS-182, "
ADAS CONTROL UNIT : DTC Logic".
“ICC SENSOR CAN COMM ERR”>>Refer to DAS-177, "
DTC Logic".
“ABS/TCS/VDC CIRC”>>Refer to DAS-133, "
DTC Logic".
“APA HI TEMP”>>Refer to DAS-170, "
DTC Logic".
“ECD CIRCUIT”>>Refer to DAS-156, "
DTC Logic".
2.PERFORM ALL OF THE SELF-DIAGNOSIS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in self-d iagnosis results of “ICC/ADAS”. Refer to DAS-100, "
DTC Index".
Is any DTC detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts i dentified by the self-diagnosis result.
>> GO TO 6.
4.CHECK EACH SWITCH AND VEHICLE SPEED SIGNAL
1. Start the engine.
2. Check that the following items operate norma lly in “DATA MONITOR” of “ICC/ADAS”.
- “VHCL SPEED SE”
- “BRAKE SW”
- “DYNA ASIST SW”
Is there a malfunctioning item?
Revision: 2010 May2011 QX56

DAS
NORMAL OPERATING CONDITIONDAS-211
< SYMPTOM DIAGNOSIS > [DCA]
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 The detection zone of the sensor is limited. A vehicle ahead must be in the detection zone for the system to operate.
- 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 system may warn driver by blinking the
system indicator and sounding the chime. The driver may have to
manually control the proper distance away from vehicle traveling
ahead.
- When driving on some roads, such as winding, hilly, curved, nar- row roads, or roads which are under construction, the sensor may
detect vehicles in a different lane, or may temporarily not detect a
vehicle traveling ahead. This may cause the system to work inap-
propriately. The detection of vehicles may also be affected by vehi-
cle operation (steering maneuver or traveling position in the lane,
etc.) or vehicle condition. If this occurs, the system may warn
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.
 The approach warning chime may sound and the system display may blink when the sensor detects some reflectors which are fitted
on vehicles in other lanes or on the side of the road. This may
cause the DCA system to operate inappropriately. The sensor may
detect these reflectors when the vehicle is driven on winding
roads, hilly roads or when entering or exiting a curve. The 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).
 The DCA system automatically dec elerates own vehicle to help
assist the driver to maintain a following distance from the vehicle
ahead. Manually brake when deceleration is required to maintain a safe distance upon sudden braking by
the vehicle ahead or when a vehicle suddenly appears in front of own vehicle. Always stay alert when using
the DCA system.
 When the vehicle ahead detection indicator lamp is not illum inated, system will not control or warn the driver.
 Never place a foot under the brake pedal. A foot may be caught when the system controls the brake.
 Depending on the position of the accelerator pedal, the system may not be able to assist the driver to
release the accelerator pedal appropriately.
 If the vehicle ahead comes to a standstill, the vehicle decel erates to a standstill within the limitations of the
system. The system will rel ease brake control with a warning chime once it judges the vehicle is at a stand-
still. To prevent the vehicle from moving, the driv er must depress the brake pedal. [The system will resume
control automatically once the system reaches 5 km/h (3 MPH)].
JPOIA0221ZZ
JPOIA0220ZZ
Revision: 2010 May2011 QX56

DAS-216
< SYSTEM DESCRIPTION >[FCW]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006223671
Component DescriptionINFOID:0000000006223672
1. Information display, IBA OFF indica-
tor lamp, buzzer
(On the combination meter) 2. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location"
3. ICC sensor
Refer to CCS-9, "
Component Parts
Location"
4. Warning systems switch 5. Warning systems ON indicator 6. ADAS control unit
Refer to DAS-13, "
Component Parts
Location"
A. Instrument lower panel (LH)
JSOIA0366ZZ
Component Description
ADAS control unit  ADAS control unit turns ON warning systems ON indicator
 ADAS control unit transmits a buzzer output signal to combination meter via CAN commu-
nication
ICC sensor  ICC sensor detects light reflected from a vehicle ahead by irradiating laser forward and cal-
culates a distance from the vehicle ahead and a relative speed, based on the detected sig-
nal
 ICC sensor transmits the presence/absence of a vehicle ahead and a distance from the ve- hicle ahead to the ADAS control unit via CAN communication
ABS actuator and electric unit
(control unit) ABS actuator and electric unit (c
ontrol unit) transmits the vehicle speed signal (wheel speed),
to ADAS control unit via CAN communication
Warning systems switch Inputs the warning systems switch signal to ADAS control unit.
Revision: 2010 May2011 QX56

DAS
COMPONENT PARTSDAS-217
< SYSTEM DESCRIPTION > [FCW]
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Warning systems ON indicator
(In the warning systems switch) Turns warning systems ON indicator ON/OFF according to the signals from the ADAS control
unit
Warning systems ON indicator turns on, according to an warning systems ON indicator signal.
Combination meter Performs the following operations using the signals received from the ADAS control unit via
the CAN communication
 Blinks the vehicle ahead detection indicator according to a meter display signal
 Illuminates the IBA OFF indicator lamp using the IBA OFF indicator lamp signal
 Operates the buzzer (ICC warning chime) using the buzzer output signal
Component Description
Revision: 2010 May2011 QX56