2011 INFINITI QX56 ECU

DAS-106
< ECU DIAGNOSIS INFORMATION >[DCA]
ICC SENSOR
×
: Applicable
DTC
CONSULT-III display
ICC system warning lamp
Fail-safe function Reference
CONSULT-III
Vehicle-to-vehicle distance control mode
Conventional (fixed speed) cruise control mode
Distance Control Assist (DCA)
Forward Collision Warning (FCW) Intelligent Brake Assist (IBA)
Brake Assist (with preview function)
C1A00 CONTROL UNIT ON ××××××CCS-83
C1A01 POWER SUPPLY CIR ON ××××××CCS-85
C1A02 POWER SUPPLY CIR2 ON ××××××CCS-85
C1A12 LASER BEAM OFFCNTR ON ×××××CCS-96
C1A16 RADAR STAIN ON ×××××CCS-106
C1A18 LASER AIMING INCMP ON ×××××CCS-109
C1A21 UNIT HIGH TEMP ON ××××××CCS-111
C1A39 STRG SEN CIR ON ××××××CCS-124
C1A50 ADAS MALFUNCTION ON ××××××CCS-128
U0104 ADAS CAN CIR1 ON ××××××CCS-132
U0121 VDC CAN CIR2 ON ××××××CCS-133
U0126 STRG SEN CAN CIR1 ON ××××××CCS-135
U0405 ADAS CAN CIR2 ON ××××××CCS-140
U0415 VDC CAN CIR1 ON ××××××CCS-141
U0428 STRG SEN CAN CIR2 ON ××××××CCS-143
U1000 CAN COMM CIRCUIT ON ××××××CCS-145
U1010 CONTROL UNIT (CAN) ON ××××××CCS-147
Revision: 2010 May2011 QX56

DAS
ACCELERATOR PEDAL ACTUATORDAS-107
< ECU DIAGNOSIS INFORMATION > [DCA]
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ACCELERATOR PEDAL ACTUATOR
Reference ValueINFOID:0000000006223518
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item Condition Value/Status
TGT FBK FRC Drive the vehicle and
operate the DCA sys-
temWhen the ADAS control unit is control-
ling the accelerator pedal actuator
It changes with the demand from
the ADAS control unit
TGT MOT POSI NOTE:
The item is indicated, but not used. —
ACT MOT POSI Engine running Depress accelerator pedal It changes according to the de-
pressed amount of accelerator
pedal
AP OPEN Engine running Depress accelerator pedal It changes according to the de-
pressed amount of accelerator pedal
APA TEMP Engine running Display the accelerator pedal ac-
tuator integrated motor tempera- ture
APA CURRENT Drive the vehicle and
operate the DCA sys-
temWhen the ADAS control unit is control-
ling the accelerator pedal actuator Display the accelerator pedal ac-
tuator motor operation consump-
tion current
APA PWR Ignition switch ON Battery voltage
APA OPE STATS Engine running When the accelerator pedal actuator
control is permitted
On
When the accelerator pedal actuator
control is invalid Off
APA STATS Engine running When the accelerator pedal actuator is
normal
Ready
When the accelerator pedal actuator is
temporarily malfunctioning TP NG
When the accelerator pedal actuator is
malfunctioning NG
During the accelerator pedal actuator
operation preparations Init
JSOIA0231ZZ
Revision: 2010 May2011 QX56

DAS-108
< ECU DIAGNOSIS INFORMATION >[DCA]
ACCELERATOR PEDAL ACTUATOR
DTC Inspection Priority Chart
INFOID:0000000006223519
If multiple DTCs are detected simultaneously, chec k them one by one depending on the following DTC inspec-
tion priority chart.
DTC IndexINFOID:0000000006223520
NOTE:
 The details of time display are as per the following.
- CRNT: A malfunction is detected now
- PAST: A malfunction was detected in the past
 IGN counter is displayed in FFD (Freeze Frame Data).
- 0: The malfunctions that are detected now
- 1 - 39: It increases like 0 → 1 → 2 ··· 38 → 39 after returning to the normal condition whenever the ignition
switch OFF → ON. It returns to 0 when a malfunction is detected again in the process.
- If it is over 39, it is fixed to 39 until the self-diagnosis results are erased.
× : Applicable
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
1
(B/O)
Ground Battery power supply Input Ignition switch OFF Battery voltage
2
(B) Ground — Ignition switch ON 0 V
3
(W/G) Ignition power supply Input Ignition switch ON Battery voltage
4
(Y) ITS communication-L — — —
5
(L) ITS communication-H — — —
Priority Detected items (DTC)
1  U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
2  C1F02: APA C/U MALF
3  C1F01: APA MOTOR MALF
 C1F03: APA HI TEMP
 C1F05: APA PWR SUPLY CIR
 C1F06: CAN CIR2
 C1F07: CAN CIR1
CONSULT-III display ICC system warnin
g lamp Fail-safe function Reference
C1F01: APA MOTOR MALF ON ×DAS-166
C1F02: APA C/U MALF ON ×DAS-168
C1F03: APA HI TEMP — — DAS-170
C1F05: APA PWR SUPLY CIR ON×DAS-171
C1F06: CAN CIR2 ON ×DAS-173
C1F07: CAN CIR1 ON ×DAS-174
U1000: CAN COMM CIRCUIT ON ×DAS-182
U1010: CONTROL UNIT (CAN) ON ×DAS-184
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-225
< SYSTEM DESCRIPTION > [FCW]
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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:0000000006223680
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
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
ADAS CONTROL UNITDAS-237
< ECU DIAGNOSIS INFORMATION > [FCW]
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ECU DIAGNOSIS INFORMATION
ADAS CONTROL UNIT
Reference ValueINFOID:0000000006223682
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-238
< ECU DIAGNOSIS INFORMATION >[FCW]
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-239
< ECU DIAGNOSIS INFORMATION > [FCW]
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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