2011 INFINITI QX56 4WD

CCS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
CCS-33
< SYSTEM DESCRIPTION > [ICC]
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Display Items for The Cause of Automatic Cancellation 2
SELF DIAGNOSTIC RESULT
Refer to DAS-38, "DTC Index".
DATA MONITOR
INCHING LOST ×A vehicle ahead is not detected during the following driving when
the vehicle speed is approximately 24 km/h (15 MPH) or less
CAN COMM ERROR ×××ADAS control unit received an abnormal signal with CAN commu-
nication
ABS/TCS/VDC CIRC ×××An abnormal condition occurs in VDC/TCS/ABS system
ECD CIRCUIT ×××An abnormal condition occurs in ECD system
ASCD VHCL SPD DTAC ×Vehicle speed is detached from set vehicle speed
ASCD DOUBLE COMD ×Cancel switch and operation switch are detected simultaneously
APA HI TEMP ×The accelerator pedal actuator integrated motor temperature is
high
ICC SENSOR CAN
COMM ERR ××Communication error between ADAS control unit and the ICC sen-
sor
4WD LOCK MODE ×××Shifting of the 4WD shift switch to 4H or 4L
ABS WARNING LAMP ××ABS warning lamp ON
NO RECORD ××× —
Cause of cancellation Description
OPE VDC/TCS/ABS 1 The activation of VDC, TCS, or ABS during LDP system control
Vehicle dynamics Vehicle behavior exceeds specified value
Steering speed Steering speed was more than the specified value in evasive direction
End by yaw angle Yaw angle was the end of LDP control
Departure yaw large Detected more than the specified value of yaw angle in departure direction
ICC WARNING Target approach warning of ICC system, IBA system or FCW system was activated
CURVATURE Road curve was more than the specified value
Steering angle large Steering angle was more than the specified value
Brake is operated Brake pedal was operated
IGN LOW VOLT Decrease in ADAS control unit IGN voltage
Lateral offset Distance of vehicle and lane was detached in lateral direction more than the specified value
Lane marker lost Lane camera unit lost the trace of lane marker
Lane marker unclear Detected lane marker was unclear
Yaw acceleration Detected yawing speed was more than the specified value
Deceleration large Deceleration in a longitudinal direction was more than the specified value
Accel is operated Accelerator pedal was depressed
Departure steering Steering wheel was steered more than the specified value in departure direction
Evasive steering Steering wheel was steered more than the specified value in the evasive direction
R range Selector lever was operated to R range
Parking brake drift Rear wheels lock was detected
Not operating condition Did not meet the operating condition (vehicle speed, turn signal operation, etc)
SNOW MODE SW SNOW mo de switch was pressed
VDC OFF SW VDC OFF switch was pressed
OPE VDC/ABS 2 The activation of VDC or ABS duri ng a standby time of LDP system control
4WD LOCK MODE Shifting of the 4WD shift switch to 4H or 4L
NO RECORD —
Revision: 2010 May2011 QX56

CCS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
CCS-37
< SYSTEM DESCRIPTION > [ICC]
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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

CCS
ADAS CONTROL UNITCCS-47
< ECU DIAGNOSIS INFORMATION > [ICC]
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TERMINAL LAYOUT
PHYSICAL VALUES
LDP SELECT Ignition switch ON “Lane Departure Prevention” set with the navigation
system is ON
On
“Lane Departure Prevention” set with the navigation
system is OFF Off
BSI SELECT NOTE:
The item is indicated, but not monitored Off
NAVI ICC SELECT NOTE:
The item is indicated, but not monitored Off
NAVI DCA SELECT NOTE:
The item is indicated, but not monitored
Off
SYS SELECTABILITY Ignition switch ON Items set with the navigation system can be switched
normally
On
Items set with the navigation system cannot be
switched normally Off
WARN SYS SW Ignition switch ON When warning systems switch is pressed On
When warning systems switch is not pressed Off
BSW/BSI WARN LMP Ignition switch ON BSW warning lamp ON On
BSW warning lamp OFF Off
BSW SYSTEM ON Ignition switch ON When the BSW system is ON
(Warning systems ON indicator ON)
On
When the BSW system is OFF
(Warning systems ON indicator OFF) Off
4WD SW Engine running 4WD shift switch position is in AUTO AUTO
4WD shift switch position is in 4H 4H
4WD shift switch position is in 4L 4L
Monitor item Condition Value/Status
JSOIA0213ZZ
Revision: 2010 May2011 QX56

CCS-50
< ECU DIAGNOSIS INFORMATION >[ICC]
ADAS CONTROL UNIT
DTC Index
INFOID:0000000006227988
NOTE:
 The details of time display are as per the following.
4  C1A01: POWER SUPPLY CIR
 C1A02: POWER SUPPLY CIR 2
 C1A04: ABS/TCS/VDC CIRC
 C1A05: BRAKE SW/STOP L SW
 C1A06: OPERATION SW CIRC
 C1A12: LASER BEAM OFFCNTR
 C1A13: STOP LAMP RLY FIX
 C1A14: ECM CIRCUIT
 C1A16: RADAR STAIN
 C1A18: LASER AIMING INCMP
 C1A2A: ICC SEN PWR SUP CIR
 C1A21: ICC SENSOR HIGH TEMP
 C1A24: NP RANGE
 C1A26: ECD MODE MALF
 C1A27: ECD PWR SUPLY CIR
 C1A33: CAN TRANSMISSION ERR
 C1A34: COMMAND ERROR
 C1A35: APA CIR
 C1A36: APA CAN COMM CIR
 C1A37: APA CAN CIR 2
 C1A38: APA CAN CIR 1
 C1A39: STRG SEN CIR
 C1A40: SYSTEM SW CIRC
 C1B01: CAM AIMING INCMP
 C1B03: CAM ABNRML TMP DETCT
 C1F01: APA MOTOR MALF
 C1F05: APA PWR SUPLY CIR
 U0121: VDC CAN CIR 2
 U0126: STRG SEN CAN CIR 1
 U0235: ICC SENSOR CAN CIRC 1
 U0401: ECM CAN CIR 1
 U0402: TCM CAN CIR 1
 U0415: VDC CAN CIR 1
 U0428: STRG SEN CAN CIR 2
 U1500: CAM CAN CIR 2
 U1501: CAM CAN CIR 1
 U1502: ICC SEN CAN COMM CIR
 U1503: SIDE RDR L CAN CIR 2
 U1504: SIDE RDR L CAN CIR 1
 U1505: SIDE RDR R CAN CIR 2
 U1506: SIDE RDR R CAN CIR 1
 U150B: ECM CAN CIRC 3
 U150C: VDC CAN CIRC 3
 U150D: TCM CAN CIRC 3
 U150E: BCM CAN CIRC 3
 U150F: AV CAN CIRC 3
 U1512: HVAC CAN CIRC3
 U1513: METER CAN CIRC 3
 U1514: STRG SEN CAN CIRC 3
 U1515: ICC SENSOR CAN CIRC 3
 U1516: CAM CAN CIRC 3
 U1517: APA CAN CIRC 3
 U1518: SIDE RDR L CAN CIRC 3
 U1519: SIDE RDR R CAN CIRC 3
 U1520: 4WD CAN CIRC 3
5  C1A03: VHCL SPEED SE CIRC
6  C1A15: GEAR POSITION
7  C1A00: CONTROL UNIT
Priority Detected items (DTC)
Revision: 2010 May2011 QX56

CCS
ADAS CONTROL UNITCCS-53
< ECU DIAGNOSIS INFORMATION > [ICC]
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NOTE:
With the detection of “U1000” some syst ems do not perform the fail-safe operation.
A system controlling based on a signal received from the control unit performs fail-safe operation when the
communication with the ADAS control unit becomes inoperable.
U1500 145 CAM CAN CIR 2 ON F DAS-381
U1501 146 CAM CAN CIR 1 ON FDAS-382
U1502 147ICC SEN CAN COMM
CIR ON ON A, B, C, D, E
CCS-152
U1503 150 SIDE RDR L CAN CIR 2 ON G DAS-502
U1504 151 SIDE RDR L CAN CIR 1 ON GDAS-503
U1505 152 SIDE RDR R CAN CIR 2 ON GDAS-504
U1506 153 SIDE RDR R CAN CIR 1 ON GDAS-505
U1507 154LOST COMM (SIDE
RDR R) ON G
DAS-506
U1508 155LOST COMM (SIDE
RDR L) ON G
DAS-507
U150B 157 ECM CAN CIRC 3 ON ON ON A, B, E, F, G CCS-148
U150C 158 VDC CAN CIRC 3 ON ON ON ON A, B, C, D, E, F, G CCS-149
U150D 159 TCM CAN CIRC 3 ON ON ON ON A, B, C, D, E, F, GCCS-150
U150E 160 BCM CAN CIRC 3 ON ON ON A, B, E, F, GCCS-151
U150F 161 AV CAN CIRC 3 DAS-61
U1512 162 HVAC CAN CIRC3 ON FDAS-383
U1513 163 METER CAN CIRC 3 ON ON ON ON A, B, C, D, E, F, GCCS-153
U1514 164 STRG SEN CAN CIRC 3 ON ON ON A, B, C, D, E, GCCS-154
U1515 165 ICC SENSOR CAN
CIRC 3 ON ON A, B, C, D, E
CCS-155
U1516 166 CAM CAN CIRC 3 ON F DAS-385
U1517 167 APA CAN CIRC 3 ON A, B, ECCS-156
U1518 168 SIDE RDR L CAN CIRC 3 ON G DAS-510
U1519 169SIDE RDR R CAN CIRC
3 ON G
DAS-511
U1520 176 4WD CAN CIRC 3 ON ON ON A, B, C, D, E, F CCS-157
Systems for fail-safe
 A: Vehicle-to-vehicle distance control mode
 B: Conventional (fixed speed) cruise control mode
 C: Intelligent Brake Assist (IBA)
 D: Forward Collision Warning (FCW)
 E: Distance Control Assist (DCA)
 F: Lane Departure Warning (LDW)/Lane Departure Prevention (LDP)
 G: Blind Spot Warning (BSW)
DTC
CONSULT-III display Warning lamp Fail-safe
Reference
CONSULT-III On board
display
ICC system warning lamp
IBA OFF indicator lamp
Lane departure warning lamp BSW warning lamp
System
Revision: 2010 May2011 QX56

CCS
U1520 4WD CAN 3CCS-157
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U1520 4WD CAN 3
DTC LogicINFOID:0000000006224436
DTC DETECTION LOGIC
NOTE:
If DTC “U1520” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to CCS-145,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1520” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1520” detected as the current malfunction?
YES >> Refer to CCS-157, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006224437
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U1520” 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 CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK TRANSFER CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ALL MODE AWD/4WD”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DLN-29, "
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
U1520 (176) 4WD CAN CIRC 3 ADAS control unit detects an error signal that is
received from transfer control unit via CAN
communication
Transfer control unit
Revision: 2010 May2011 QX56

CCS-162
< SYMPTOM DIAGNOSIS >[ICC]
ICC SYSTEM CANNOT BE SET
(MAIN SWITCH TURNS ON/OFF)
ICC SYSTEM CANNOT BE SET (MAIN SWITCH TURNS ON/OFF)
DescriptionINFOID:0000000006224443
The MAIN switch can be turned ON/OFF, but the ICC system cannot be set even if the SET/COAST switch is
pressed.
NOTE:
The system cannot be set in the following case.
 When the vehicle ahead is not detected bel ow the speed of 32 km/h (20 MPH).
 When the selector lever is not in the “D” position or manual mode.
 When the front wipers are operating at HI.
(If the vehicle is equipped with a rain sensing auto-wi per, the system may cancel when the wipers are set to
AUTO)
 When the brake pedal is depressed.
 When driving into a strong light (i.e., sunlight).
 When the VDC is turned OFF.
 When ABS or VDC (including the TCS) operates.
 When a wheel slips.
 When SNOW mode switch is turned ON.
 When ABS warning lamp is ON.
 When 4WD shift switch is not AUTO position.
Diagnosis ProcedureINFOID:0000000006224444
1.CHECK CAUSE OF AUTOMATIC CANCELLATION
Check if there is the 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 CCS-94, "
DTC Logic".
“VHCL SPD UNMATCH”>>Refer to CCS-87, "
DTC Logic".
“IGN LOW VOLT”>>Refer to CCS-85, "
ADAS CONTROL UNIT : DTC Logic".
“ECM CIRCUIT”>>Refer to CCS-103, "
DTC Logic".
“CAN COMM ERROR”>>Refer to CCS-145, "
ADAS CONTROL UNIT : DTC Logic".
“ICC SENSOR CAN COMM ERR”>>Refer to CCS-137, "
DTC Logic".
“ABS/TCS/VDC CIRC”>>Refer to CCS-89, "
DTC Logic".
“ECD CIRCUIT”>>Refer to CCS-115, "
DTC Logic".
2.PERFORM THE SELF-DIAGNOSIS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in “Self Diagnosti c Result” of “ICC/ADAS”” of “LASER”. Refer to CCS-50,
"DTC Index" (ICC/ADAS) or CCS-55, "DTC Index" (LASER).
Is any DTC detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts identified 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 no rmally in “DATA MONITOR” of “ICC/ADAS”.
- “VHCL SPEED SE”
- “D RANGE SW”
- “SET/COAST SW”
- “BRAKE SW”
-“WIPER SW”
Revision: 2010 May2011 QX56

DAS-4
DTC Logic ..............................................................180
Diagnosis Procedure .............................................180
U0428 STRG SEN CAN 2 ................................181
DTC Logic ............................................................ ..181
Diagnosis Procedure .............................................181
U1000 CAN COMM CIRCUIT ..........................182
ADAS CONTROL UNIT ......................................... ..182
ADAS CONTROL UNIT : Description ....................182
ADAS CONTROL UNIT : DTC Logic .....................182
ADAS CONTROL UNIT : Diagnosis Procedure .....182
ACCELERATOR PEDAL ACTUATOR .................. ..182
ACCELERATOR PEDAL ACTUATOR : Descrip-
tion .........................................................................
182
ACCELERATOR PEDAL ACTUATOR : DTC Log-
ic ............................................................................
182
ACCELERATOR PEDAL ACTUATOR : Diagnosis
Procedure ..............................................................
183
U1010 CONTROL UNIT (CAN) .......................184
ADAS CONTROL UNIT ......................................... ..184
ADAS CONTROL UNIT : Description ....................184
ADAS CONTROL UNIT : DTC Logic .....................184
ADAS CONTROL UNIT : Diagnosis Procedure .....184
ACCELERATOR PEDAL ACTUATOR .................. ..184
ACCELERATOR PEDAL ACTUATOR : Descrip-
tion .........................................................................
184
ACCELERATOR PEDAL ACTUATOR : DTC Log-
ic ............................................................................
184
ACCELERATOR PEDAL ACTUATOR : Diagnosis
Procedure ..............................................................
184
U150B ECM CAN 3 .........................................185
DTC Logic ............................................................ ..185
Diagnosis Procedure .............................................185
U150C VDC CAN 3 ..........................................186
DTC Logic ............................................................ ..186
Diagnosis Procedure .............................................186
U150D TCM CAN 3 ..........................................187
DTC Logic ............................................................ ..187
Diagnosis Procedure .............................................187
U150E BCM CAN 3 .........................................188
DTC Logic ............................................................ ..188
Diagnosis Procedure .............................................188
U1502 ICC SENSOR CAN COMM CIRC ........189
DTC Logic ............................................................ ..189
Diagnosis Procedure .............................................189
U1513 METER CAN 3 .....................................190
DTC Logic ............................................................ ..190
Diagnosis Procedure .............................................190
U1514 STRG SEN CAN 3 ................................191
DTC Logic ............................................................ ..191
Diagnosis Procedure ............................................ .191
U1515 ICC SENSOR CAN 3 ............................192
DTC Logic ............................................................ .192
Diagnosis Procedure .............................................192
U1517 ACCELERATOR PEDAL ACTUATOR
CAN 3 ...............................................................
193
DTC Logic ............................................................ .193
Diagnosis Procedure .............................................193
U1520 4WD CAN 3 ...........................................194
DTC Logic ............................................................ .194
Diagnosis Procedure .............................................194
POWER SUPPLY AND GROUND CIRCUIT ....195
ADAS CONTROL UNIT .......................................... .195
ADAS CONTROL UNIT : Diagnosis Procedure ....195
ACCELERATOR PEDAL ACTUATOR .................. .195
ACCELERATOR PEDAL ACTUATOR : Diagnosis
Procedure .............................................................
195
SYMPTOM DIAGNOSIS ...........................197
DISTANCE CONTROL ASSIST SYSTEM
SYMPTOMS .................................................... ..
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Symptom Table .................................................... .197
SWITCH DOES NOT TURN ON / SWITCH
DOES NOT TURN OFF .................................. ..
198
Description ........................................................... .198
Diagnosis Procedure .............................................198
DCA SYSTEM SETTINGS CANNOT BE
TURNED ON/OFF ON THE NAVIGATION
SCREEN ...........................................................
200
Description ........................................................... .200
Diagnosis Procedure .............................................200
DCA SYSTEM NOT ACTIVATED (SWITCH IS
ON) ....................................................................
201
Description ........................................................... .201
Diagnosis Procedure .............................................201
CHIME DOES NOT SOUND .............................203
Description ........................................................... .203
Diagnosis Procedure .............................................203
NO FORCE GENERATED FOR PUTTING
BACK THE ACCELERATOR PEDAL ..............
205
Description ........................................................... .205
Diagnosis Procedure .............................................205
FREQUENTLY CANNOT DETECT THE VEHI-
CLE AHEAD / DETECTION ZONE IS SHORT ..
206
Description ........................................................... .206
Diagnosis Procedure .............................................206
THE SYSTEM DOES NOT DETECT THE VE-
HICLE AHEAD AT ALL ....................................
208
Revision: 2010 May2011 QX56