turn signal INFINITI QX56 2011 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
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![INFINITI QX56 2011 Factory Service Manual
DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-29
< SYSTEM DESCRIPTION > [ADAS CONTROL UNIT]
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Active Pedal
CAUTION:
Shift the selector lever to “P” po
sition, and the](/img/42/57033/w960_57033-993.png "INFINITI QX56 2011 Factory Service Manual
DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-29
< SYSTEM DESCRIPTION > [ADAS CONTROL UNIT]
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Active Pedal
CAUTION:
Shift the selector lever to “P” po
sition, and the")
DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-29
< SYSTEM DESCRIPTION > [ADAS CONTROL UNIT]
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Active Pedal
CAUTION:
Shift the selector lever to “P” po
sition, and then perform the test.
Never depress the accelerator pedal excessively. (T he engine speed may rise unexpectedly when
finishing the test.)
NOTE:
Depress the accelerator pedal to check when performing the test.
The test can be performed only when the engine is running.
NOTE:
The test is finished in 10 seconds after starting
DCA INDICATOR
NOTE:
The test can be performed only when the engine is running.
LDP BUZZER
WARNING SYSTEM IND
Test item Operation Description Accelerator pedal operation
Active Pedal MODE1
Transmit the accelerator pedal feedback force control signal
to the accelerator pedal actuator via ITS communication. Constant with a force of 25 N
for 8 seconds
MODE2 Constant with a force of 15 N
for 8 seconds
MODE3 Change up to a force of 25 N for
8 seconds
MODE4 Change up to a force of 15 N for
8 seconds
Test start Starts the tests of “MODE1”, “MODE2”, “MODE3” and
“MODE4” —
Reset Stops transmitting the accelerator pedal feedback force
control signal below to end the test.
—
End Returns to the “SELECT TEST ITEM” screen —
JPOIA0061GB
Te s t i t e m Opera-
tion Description DCA system switch indicator
DCA INDICATOR Off
Stops transmitting the DCA system switch indicator signal be-
low to end the test
—
On Transmits the DCA system switch indicator signal to the com-
bination meter via CAN communication ON
Te s t i t e m
Opera-
tion Description Warning buzzer
LDP BUZZER Off
Stops transmitting the warning buzzer signal below to end the
test
—
On Transmits the warning buzzer signal to the warning buzzer ON
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DAS-32
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
VHCL SPEED SE While driving Displays the ve-
hicle speed cal-
culated by
ADAS control unit
SET VHCL SPD While driving When](/img/42/57033/w960_57033-996.png "INFINITI QX56 2011 Factory Service Manual
DAS-32
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
VHCL SPEED SE While driving Displays the ve-
hicle speed cal-
culated by
ADAS control unit
SET VHCL SPD While driving When")
DAS-32
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
VHCL SPEED SE While driving Displays the ve-
hicle speed cal-
culated by
ADAS control unit
SET VHCL SPD While driving When vehicle speed is set Displays the set
vehicle speed
BUZZER O/P Engine running When the buzzer of the following system operates
Vehicle-to-vehicle distance control mode
DCA system
FCW system
IBA system
On
When the buzzer of the following system not operates
Vehicle-to-vehicle distance control mode
DCA system
FCW system
IBA system Off
THRTL SENSOR NOTE:
The item is indicated, but not monitored
0.0
ENGINE RPM Engine running Equivalent to ta-
chometer read- ing
WIPER SW Ignition switch ON Wiper not operating Off
Wiper LO operation Low
Wiper HI operation High
YAW R AT E NOTE:
The item is indicated, but not monitored
0.0
BA WARNING Engine running IBA OFF indicator lamp ON
When IBA system is malfunctioning
When IBA system is turned to OFF
On
IBA OFF indicator lamp OFF
When IBA system is normal
When IBA system is turned to ON Off
STP LMP DRIVE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When ICC brake hold relay is activated On
When ICC brake hold relay is not activated Off
D RANGE SW Engine running When the selector lever is in “D” position or manual
mode
On
When the selector lever is in any position other than “D”
or manual mode Off
NP RANGE SW Engine running When the selector lever is
in “N”, “P” position On
When the selector lever is in any position other than “N”,
“P” Off
PKB SW Ignition switch ON When the parking brake is applied On
When the parking brake is released Off
PWR SUP MONI Engine running Power supply
voltage value of ADAS control unit
VHCL SPD AT While driving Va l u e o f A / T v e -
hicle speed sen- sor signal
THRTL OPENING Engine running Depress accelerator pedal Displays the
throttle position
Monitor item Condition Value/Status
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DAS-34
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
LDP ON INDStart the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) LDP ON indicator lam](/img/42/57033/w960_57033-998.png "INFINITI QX56 2011 Factory Service Manual
DAS-34
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
LDP ON INDStart the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) LDP ON indicator lam")
DAS-34
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
LDP ON INDStart the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) LDP ON indicator lamp ON On
LDP ON indicator lamp OFF Off
LANE DPRT W/L Drive the vehicle and activate
the LDW system or LDP sys-
tem Lane departure warning lamp ON On
Lane departure warning lamp OFF Off
LDW BUZER OUT-
PUT Drive the vehicle and activate
the LDW/LDP system or BSW
system When the buzzer of the following system operates
LDW/LDP system
BSW system
On
When the buzzer of the following system does not oper-
ate
LDW/LDP system
BSW system Off
LDP SYSTEM ON Start the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) When the LDP system is ON On
When the LDP system is OFF Off
READY signal Start the engine and press dy-
namic driver assistance switch
(When LDP system setting is
ON) When the LDP system is ON On
When the LDP system is OFF Off
Camera lost Drive the vehicle and activate
the LDW system, LDP system Both side lane markers are detected Detect
Deviate side lane marker is lost Deviate
Both side lane markers are lost Both
Shift position Engine running
While driving Displays the
shift position
Turn signal Turn signal lamps OFF
Off
Turn signal lamp LH blinking LH
Turn signal lamp RH blinking RH
Turn signal lamp LH and RH blinking LH&RH
SIDE G While driving Vehicle turning right Negative value
Vehicle turning left Positive value
WARN REQ Drive the vehicle and activate
the LDP system Lane departure warning is operating On
Lane departure warning is not operating Off
STATUS signal Drive the vehicle and activate
the LDP system When the LDP system is ON Stnby
When the LDP system is operating Warn
When the LDP system is canceled Cancl
When the LDP system is OFF Off
Lane unclear While driving Lane marker is unclear On
Lane marker is clear Off
FUNC ITEM Ignition switch ON FUNC1
FUNC ITEM (NV-ICC) Ignition switch ON Off
FUNC ITEM (NV-
DCA) Ignition switch ON
Off
DCA SELECT Ignition switch ON “Distance Control Assist” set with the navigation system
is ON
On
“Distance Control Assist” set with the navigation system
is OFF Off
Monitor item Condition Value/Status
Revision: 2010 May2011 QX56
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DAS-36
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
Fail-safe
INFOID:0000000006223477
If a malfunction occurs in each system, ADAS contro l unit cancels each control, sounds a b](/img/42/57033/w960_57033-1000.png "INFINITI QX56 2011 Factory Service Manual
DAS-36
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
Fail-safe
INFOID:0000000006223477
If a malfunction occurs in each system, ADAS contro l unit cancels each control, sounds a b")
DAS-36
< ECU DIAGNOSIS INFORMATION >[ADAS CONTROL UNIT]
ADAS CONTROL UNIT
Fail-safe
INFOID:0000000006223477
If a malfunction occurs in each system, ADAS contro l unit cancels each control, sounds a beep, and turns ON
the warning lamp or indicator lamp.
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
+ − Signal name Input/
Output
1
(V/W)
Ground Warning systems
switch
InputIgnition
switch ON When warning systems
switch is not pressed
12 V
When warning systems
switch is pressed 0 V
3
(R/Y) IBA OFF switch Input Ignition
switch
ON When IBA OFF switch is
not pressed
12 V
When IBA OFF switch is
pressed 0 V
4
(LG/B) Warning systems ON
indicator
OutputIgnition
switch ON Warning systems ON indi-
cator ON
0 V
Warning systems ON indi-
cator OFF 12 V
5
(R) ICC brake hold relay
drive signal
OutputIgnition
switch ON —12 V
At “STOP LAMP” test of
“Active test” 0 V
6
(B) Ground — Ignition
switch ON —0 V
7
(L) ITS communication-H — — — —
8
(Y) ITS communication-L — — — —
12
(G/R) Warning buzzer signal Output Ignition
switch ON Warning buzzer operation 0 V
Warning buzzer not oper-
ating
12 V
14
(L) CAN -H — — — —
15
(P) CAN -L — — — —
16
(W/G) Ignition power supply Input Ignition switch ON Battery Voltage
System Buzzer Warning lamp/Indicator lamp Description
Vehicle-to-vehicle distance control mode High-pitched
toneICC system warn
ing lamp Cancel
Conventional (fixed speed) cruise control mode High-pitched
tone
ICC system warn
ing 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 warn
ing lamp Cancel
Lane Departure Warning (LDW) — Lane departure warning lamp Cancel
Revision: 2010 May2011 QX56
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DAS
U1000 CAN COMM CIRCUITDAS-59
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006223485
CAN COMMUNICATION
CAN (Controlle](/img/42/57033/w960_57033-1023.png "INFINITI QX56 2011 Factory Service Manual
DAS
U1000 CAN COMM CIRCUITDAS-59
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006223485
CAN COMMUNICATION
CAN (Controlle")
DAS
U1000 CAN COMM CIRCUITDAS-59
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006223485
CAN COMMUNICATION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communicati on speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units , and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
ITS COMMUNICATION
ITS communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines.
ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
DTC LogicINFOID:0000000006223486
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
Diagnosis ProcedureINFOID:0000000006223487
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the MAIN switch of ICC system ON, and then wait for 30 seconds or more.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible causes
U1000 (100) CAN COMM CIRCUIT If ADAS control unit is not transmitting or receiv-
ing CAN communication signal or ITS communi-
cation signal for 2 seconds or more CAN communication system
ITS communication system
Revision: 2010 May2011 QX56
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DAS-60
< DTC/CIRCUIT DIAGNOSIS >[ADAS CONTROL UNIT]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000006223488
CAN controller controls the communication of CA
N communicatio](/img/42/57033/w960_57033-1024.png "INFINITI QX56 2011 Factory Service Manual
DAS-60
< DTC/CIRCUIT DIAGNOSIS >[ADAS CONTROL UNIT]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000006223488
CAN controller controls the communication of CA
N communicatio")
DAS-60
< DTC/CIRCUIT DIAGNOSIS >[ADAS CONTROL UNIT]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000006223488
CAN controller controls the communication of CA
N communication signal and ITS communication signal, and
the error detection.
DTC LogicINFOID:0000000006223489
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006223490
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the MAIN switch of ICC system ON.
2. Perform “All DTC Reading” with CONSULT-III.
3. Check if the “U1010” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1010” detected as the current malfunction?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> INSPECTION END
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible causes
U1010 (110) CONTROL UNIT (CAN) If ADAS control unit detects malfunction by
CAN controller initial diagnosis
ADAS control unit
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DAS
U150F AV CAN 3DAS-61
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U150F AV CAN 3
DTC LogicINFOID:0000000006228052
DTC DETECTION LOGIC
NOTE:
If DTC “U150F” is de](/img/42/57033/w960_57033-1025.png "INFINITI QX56 2011 Factory Service Manual
DAS
U150F AV CAN 3DAS-61
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U150F AV CAN 3
DTC LogicINFOID:0000000006228052
DTC DETECTION LOGIC
NOTE:
If DTC “U150F” is de")
DAS
U150F AV CAN 3DAS-61
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U150F AV CAN 3
DTC LogicINFOID:0000000006228052
DTC DETECTION LOGIC
NOTE:
If DTC “U150F” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to DAS-38, "
DTC
Index".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA system or LDP system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U150F” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U150F” detected as the current malfunction?
YES >> Refer to DAS-61, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228053
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U150F” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to DAS-59, "
DTC Logic".
NO >> GO TO 2.
2.CHECK AV CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “MULTI AV”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
AV-57, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
U150F (161) AV CAN CIRC 3 ADAS control unit detects an error signal that is
received from AV control unit via CAN commu-
nication
AV control unit
Revision: 2010 May2011 QX56
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DAS
COMPONENT PARTSDAS-67
< SYSTEM DESCRIPTION > [DCA]
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Component DescriptionINFOID:0000000006223499
Component Description
ADAS control unit ADAS control unit calculate](/img/42/57033/w960_57033-1031.png "INFINITI QX56 2011 Factory Service Manual
DAS
COMPONENT PARTSDAS-67
< SYSTEM DESCRIPTION > [DCA]
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Component DescriptionINFOID:0000000006223499
Component Description
ADAS control unit ADAS control unit calculate")
DAS
COMPONENT PARTSDAS-67
< SYSTEM DESCRIPTION > [DCA]
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Component DescriptionINFOID:0000000006223499
Component Description
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 a brake fluid pres-
sure control signal to ABS actu ator and electric unit (control unit) via CAN communica-
tion
ADAS control unit transmits the buzzer output signal to the combination meter via CAN communication
ADAS control unit transmits an accelerator pedal feedback force control signal to the accelerator pedal actuator via ITS communication
ICC sensor ICC sensor detects light reflected from a vehicle ahead by irradiating laser forward and
calculates a distance from the vehicle ahead and a relative speed, based on the detect-
ed 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 signal, etc. to ADAS control unit via CAN communica-
tion
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 operat ion condition to ADAS con-
trol unit via CAN communication
ABS actuator and electric unit (control unit ) controls the brake, based on a brake fluid
pressure control signal received from ADAS control unit via CAN communication
TCM TCM transmits the signal related to A/T control to ADAS control unit via CAN communi-
cation
Combination meter Performs the following operations using the signals received from the ADAS control unit
via the CAN communication
Displays the DCA system operation status using the meter display signal
Illuminates the ICC system warning lamp using the ICC warning lamp signal
Operates the buzzer (ICC warning chime) using the buzzer output signal
Dynamic driver assistance switch
(On the ICC steering switch) ECM receives an ICC steering switch (dynamic driver assistance switch) signal and trans-
mits the signal to ADAS control unit via CAN communication
ICC brake hold relay ICC brake hold relay activates the stop lamp by ICC brake hold relay drive signal (stop
lamp drive signal) outputted by the ADAS control unit
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 communication
Stop lamp switch signal is input 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
Transfer control unit
Transfer control unit transmits a mode selection state of 4WD shift switch to the ADAS
control unit via CAN communication
AV control unit AV control unit transmits the system selection signal to the ADAS control unit via CAN
communication
Steering angle sensor Measures the rotation amount, rotation speed, and rotation direction of steering wheel,
and then transmits them to ADAS control unit via CAN communication
Accelerator pedal actuator Accelerator pedal actuator receives an accelerator pedal feedback force control signal
from the ADAS control unit via ITS communication and pushes back the accelerator pedal
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DAS
SYSTEMDAS-69
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Output Signal Item
Transmit unit Signal name Description
ECM CAN com-
munica-
tionClosed throttle position signal Receives](/img/42/57033/w960_57033-1033.png "INFINITI QX56 2011 Factory Service Manual
DAS
SYSTEMDAS-69
< SYSTEM DESCRIPTION > [DCA]
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Output Signal Item
Transmit unit Signal name Description
ECM CAN com-
munica-
tionClosed throttle position signal Receives")
DAS
SYSTEMDAS-69
< SYSTEM DESCRIPTION > [DCA]
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Output Signal Item
Transmit unit Signal name Description
ECM CAN com-
munica-
tionClosed throttle position signal Receives idle position state (ON/OFF)
Accelerator 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
Stop lamp switch signal Receives an operational state of the brake pedal
Snow mode signal Receives an operational state of the snow mode
TCM CAN com-
munica-
tionInput speed signal Receives the number of revolutions of input shaft
Current gear position signal Receives a current gear position
Shift position signal Receives a selector lever position
Output shaft revolution signal Receives the number of revolutions of output shaft
ABS actuator
and electric unit
(control unit) CAN com-
munica-
tionABS malfunction signal Receives
a malfunction state of ABS
ABS operation signal Receives an operational state of ABS
ABS warning lamp signal Receives an ON/OFF state of ABS warning lamp
TCS malfunction signal Receives a malfunction state of TCS
TCS operation signal Receives an operational state of TCS
VDC OFF switch signal Receives an ON/OFF state of VDC
VDC malfunction signal Receives a malfunction state of VDC
VDC operation signal Receives an operational state of VDC
Vehicle speed signal (ABS) Receives wheel speeds of four wheels
Stop lamp switch signal Receives an operational state of the brake pedal
Yaw rate signal Receives yaw rate acting on the vehicle
Steering angle
sensor CAN com-
munica-
tionSteering angle sensor malfunction signal Receives a malfunction state of steering angle sensor
Steering angle sensor signal
Receives the number of revolutions, turning direction of
the steering wheel
Steering angle speed signal Receives the turning angle speed of the steering wheel
AV control unit CAN com-
munica-
tionSystem selection signal
Receives a selection state of each item in “Driver As-
sist” selected with the navigation system
Transfer control
unit CAN com-
munica-
tion
Current 4WD mode signal Receives a mode selection state of the 4WD shift mode
ICC sensor ITS com-
munica-
tion
ICC sensor signal
Receives detection results, such as the presence or ab-
sence of a vehicle ahead and distance from the vehicle
Accelerator
pedal actuator ITS com-
munica-
tionAccelerator pedal actuator operation status
signal
Receives an operational state of accelerator pedal ac-
tuator
Reception unit Signal name Description
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
Revision: 2010 May2011 QX56
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DAS-70
< SYSTEM DESCRIPTION >[DCA]
SYSTEM
FUNCTION DESCRIPTION
When a vehicle is detected ahead The vehicle ahead detection indicator comes ON.
When vehicle approaches a vehicle ahead If the drive](/img/42/57033/w960_57033-1034.png "INFINITI QX56 2011 Factory Service Manual
DAS-70
< SYSTEM DESCRIPTION >[DCA]
SYSTEM
FUNCTION DESCRIPTION
When a vehicle is detected ahead The vehicle ahead detection indicator comes ON.
When vehicle approaches a vehicle ahead If the drive")
DAS-70
< SYSTEM DESCRIPTION >[DCA]
SYSTEM
FUNCTION DESCRIPTION
When a vehicle is detected ahead The vehicle ahead detection indicator comes ON.
When vehicle approaches a vehicle ahead If the driver is not depressing the accelerator pedal, t
he system activates the brakes to decelerate smoothly
as necessary. If the vehicle ahead comes to a stop, the vehicle decelerates to a standstill within the limita-
tions of the system.
If the driver is depressing the accelerator pedal, the system moves the accelerator pedal upward to assist
the driver to release the accelerator pedal.
When brake operation by driver is required The system alerts the driver by a warning chime and blinking the vehicle ahead detection indicator. If the
driver is depressing the accelerator pedal after the wa rning, the system moves the accelerator pedal upward
to assist the driver to switch to the brake pedal.
CAUTION:
If the vehicle ahead comes to a stan dstill, the vehicle decelerates to a standstill within the limitations
of the system. The system will release brake control wi th a warning chime once it judges the vehicle is
at a standstill. To prevent the vehicle from moving , the driver must depress the brake pedal. [The sys-
tem will resume control automatically once the system reaches 5 km/h (3 MPH)].
NOTE:
Depending on the position of the accelerator pedal, the system may not be able to assist the driver to
release the accelerator pedal appropriately.
When the driver depresses the accelerator pedal even further while the system is moving the acce\
lerator pedal upward, the accelerator pedal control will be canceled.
When the driver is depressing the accelerator pedal, the brake control by the system is not operated.
When the driver is depressing the brake pedal, neither the brake control nor the alert by the system oper-
ates.
When the ICC system is set, the DCA system will be canceled.
OPERATION DESCRIPTION
ICC sensor calculates a distance from a vehicle ahead and a relative speed to transmit the ICC sensor signal
to the ADAS control unit via ITS communication. Based on the received signal, the ADAS control unit trans-
mits a control signal to the accelerator pedal actuator via ITS communication and to the ABS actuator control
unit (control unit) via CAN communication.
Combination
meter CAN commu-
nicationMeter display
signal
Vehicle ahead detec-
tion indicator signal
Transmits a signal to display a state of the system on
the information display
DCA system switch in-
dicator signal
ICC warning lamp signal Transmits an ICC warning lamp signal to turn ON the
ICC system warning lamp
Buzzer output signal Transmits a buzzer output signal to activate the buzz-
er
ICC sensor ITS commu-
nicationVehicle speed signal
Transmits a vehicle speed calculated by the ADAS
control unit
Steering angle sensor signal Transmits a steering angle sensor signal received
from the steering angle sensor
Accelerator
pedal actuator ITS commu-
nicationAccelerator pedal position signal
Transmits an accelerator pedal angle calculated by
the ADAS control unit
Accelerator pedal feedback force control
signal Transmits a target actuation force value 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
Reception unit Signal name Description
Revision: 2010 May2011 QX56