2011 INFINITI QX56 engine

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-79
< SYSTEM DESCRIPTION > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
 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:0000000006223507
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

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-85
< SYSTEM DESCRIPTION > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
ACTIVE TEST
CAUTION:
 Never perform “Active Test” while driving the vehicle.
 The “Active Test” cannot be performed when th e following systems warning lamp is illuminated.
- ICC system warning lamp
- Lane departure warning lamp
- BSW warning lamp
- IBA OFF indicator lamp (IBA system ON)
 Shift the selector lever to “P” po sition, and then perform the test.
METER LAMP
NOTE:
The test can be performed only when the engine is running.
BSW SYSTEM ON
[On/Off] ×
Indicates [On/Off] status of BSW system
4WD SW
[AUTO, 4H, 4L] ×××
Indicates [On/Off] status as judged from current 4WD mode signal (Transfer con-
trol unit transmits current 4WD mode signal through CAN communication)
Monitored item
[Unit]
ALL SIG
(ICC)
MAIN SIG (ICC)
MAIN SIG
(LDW/LDP)
MAIN SIG
(BSW/BSI)
Description
Test item Description
METER LAMP The ICC system warning lamp, MAIN switch indicator and IBA OFF indicator lamp can be illuminated
by ON/OFF operations as necessary
STOP LAMP The ICC brake hold relay can be operated by ON/OFF operations as necessary, and the stop lamp
can be illuminated
ICC BUZZER Sounds a buzzer used for following systems by arbitrarily operating ON/OFF
 Intelligent Cruise Control (ICC)
 Distance Control Assist (DCA)
 Forward Collision Warning (FCW)
 Intelligent Brake Assist (IBA)
BRAKE ACTUATOR Activates the brake by an arbitrary operation
Active Pedal The accelerator pedal actuator can be operated as necessary
DCA INDICATOR The DCA system switch indicator can be illuminated by ON/OFF operations as necessary
LDP BUZZER Sounds a buzzer used for following systems by arbitrarily operating ON/OFF
 Lane Departure Warning (LDW)
 Lane Departure Prevention (LDP)
 Blind Spot Warning (BSW)
WARNING SYSTEM IND The warning systems ON indicator (on warning systems switch) can be illuminated by ON/OFF op-
erations as necessary
LDP ON IND The LDP ON indicator lamp can be illuminated by ON/OFF operations as necessary
LANE DEPARTURE W/L The lane departure warning lamp can be illuminated by ON/OFF operations as necessary
BSW/BSI WARNING LAMP The BSW warning lamp can be illuminated by ON/OFF operations as necessary
Revision: 2010 May2011 QX56

DAS-86
< SYSTEM DESCRIPTION >[DCA]
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
STOP LAMP
ICC BUZZER
BRAKE ACTUATOR
NOTE:
The test can be performed only when the engine is running.
NOTE:
The test is finished in 10 seconds after starting
Te s t i t e mOper-
ation Description  MAIN switch indicator
 ICC system warning lamp
 IBA OFF indicator lamp
METER LAMP Off
Stops sending the following signals to exit from the test
 Meter display signal
 ICC warning lamp signal
 IBA OFF indicator lamp signal OFF
On Transmits the following signals to the combination meter via
CAN communication
 Meter display signal
 ICC warning lamp signal
 IBA OFF indicator lamp signal
ON
Te s t i t e m
Oper-
ation Description Stop lamp
STOP LAMP Off
Stops transmitting the ICC brake hold relay drive signal be-
low to end the test OFF
On Transmits the ICC brake hold relay drive signal ON
Test item Operation Description ICC warning chime operation
sound
ICC BUZZER MODE1
Transmits the buzzer output signals to the combination
meter via CAN communication Intermittent beep sound
Test start Starts the tests of “MODE1” — Reset Stops transmitting the buzzer output signal below to end
the test —
End Returns to the “SELECT TEST ITEM” screen —
Test item Operation Description “PRESS SENS” value
BRAKE ACTUATOR MODE1
Transmits the brake fluid pressure control signal to the
ABS actuator and electric unit (control unit) via CAN
communication 10 bar
MODE2 20 bar
MODE3 30 bar
Test start Starts the tests of “MODE1”, “MODE2” and “MODE3” —
Reset Stops transmitting the brake fluid pressure control signal
below to end the test —
End Returns to the “SELECT TEST ITEM” screen —
PKIB1767J
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-87
< SYSTEM DESCRIPTION > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
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
Revision: 2010 May2011 QX56

DAS
ADAS CONTROL UNITDAS-93
< ECU DIAGNOSIS INFORMATION > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
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-94
< ECU DIAGNOSIS INFORMATION >[DCA]
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
Revision: 2010 May2011 QX56

DAS
ADAS CONTROL UNITDAS-95
< ECU DIAGNOSIS INFORMATION > [DCA]
C
D
E
F
G H
I
J
K L
M B
N P A
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