2011 INFINITI QX56 ground

DAS-1
CRUISE CONTROL & DRIVER ASSISTANCE
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DAS
SECTION DAS
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CONTENTS
DRIVER ASSISTANCE SYSTEM
ADAS CONTROL UNIT
PRECAUTION ................ ..............................
12
PRECAUTIONS .............................................. ....12
Precautions For Harness Repair ......................... ....12
SYSTEM DESCRIPTION .............................13
COMPONENT PARTS ................................... ....13
Component Parts Location .................................. ....13
Component Description ...........................................13
SYSTEM .............................................................14
System Description ............................................. ....14
Fail-safe ..................................................................18
DIAGNOSIS SYSTEM (ADAS CONTROL
UNIT) ..................................................................
20
On Board Diagnosis Function ............................. ....20
CONSULT-III Function (ICC/ADAS) ........................21
ECU DIAGNOSIS INFORMATION ..............31
ADAS CONTROL UNIT .................................. ....31
Reference Value ................................................. ....31
Fail-safe ..................................................................36
DTC Inspection Priority Chart .................................37
DTC Index ...............................................................38
WIRING DIAGRAM ......................................42
DRIVER ASSISTANCE SYSTEMS ................ ....42
Wiring Diagram ................................................... ....42
DTC/CIRCUIT DIAGNOSIS .........................57
C1A00 CONTROL UNIT ................................. ....57
DTC Logic ........................................................... ....57
Diagnosis Procedure ...............................................57
C1A01 POWER SUPPLY CIRCUIT 1, C1A02
POWER SUPPLY CIRCUIT 2 ............................
58
DTC Logic ............................................................ ....58
Diagnosis Procedure ...............................................58
U1000 CAN COMM CIRCUIT ...........................59
Description ...............................................................59
DTC Logic ................................................................59
Diagnosis Procedure ...............................................59
U1010 CONTROL UNIT (CAN) .........................60
Description ...............................................................60
DTC Logic ................................................................60
Diagnosis Procedure ...............................................60
U150F AV CAN 3 ..............................................61
DTC Logic ................................................................61
Diagnosis Procedure ...............................................61
POWER SUPPLY AND GROUND CIRCUIT ....62
Diagnosis Procedure ...............................................62
REMOVAL AND INSTALLATION ...............63
ADAS CONTROL UNIT ....................................63
Removal and Installation ..................................... ....63
DCA
PRECAUTION ............... ...............................
64
PRECAUTIONS .................................................64
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
64
Precautions For Harness Repair .............................64
DCA System Service ...............................................65
SYSTEM DESCRIPTION .............................66
COMPONENT PARTS ......................................66
Component Parts Location .................................. ....66
Component Description ...........................................67
SYSTEM ............................................................68
System Description .............................................. ....68
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 .................................................... ..
197
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

DAS-8
U1516 CAM CAN 3 ..........................................385
DTC Logic ............................................................ ..385
Diagnosis Procedure .............................................385
U1520 4WD CAN 3 ..........................................386
DTC Logic ............................................................ ..386
Diagnosis Procedure .............................................386
POWER SUPPLY AND GROUND CIRCUIT ...387
ADAS CONTROL UNIT ......................................... ..387
ADAS CONTROL UNIT : Diagnosis Procedure .....387
LANE CAMERA UNIT ............................................ ..387
LANE CAMERA UNIT : Diagnosis Procedure .......387
WARNING SYSTEMS SWITCH CIRCUIT .......389
Component Function Check ................................ ..389
Diagnosis Procedure .............................................389
Component Inspection ...........................................390
WARNING SYSTEMS ON INDICATOR CIR-
CUIT .................................................................
391
Component Function Check ................................ ..391
Diagnosis Procedure .............................................391
Component Inspection ...........................................392
WARNING BUZZER CIRCUIT .........................393
Component Function Check ................................ ..393
Diagnosis Procedure .............................................393
SYMPTOM DIAGNOSIS ............................395
LDW & LDP SYSTEM SYMPTOMS ............... .395
Symptom Table ................................................... ..395
LANE DEPARTURE WARNING LAMP DOES
NOT TURNED ON ...........................................
397
Description ........................................................... ..397
Diagnosis Procedure .............................................397
LDP ON INDICATOR LAMP DOES NOT
TURNED ON ....................................................
398
Description ........................................................... ..398
Diagnosis Procedure .............................................398
THE SYSTEM OPERATES EVEN WHEN US-
ING TURN SIGNAL .........................................
399
Description ........................................................... ..399
Diagnosis Procedure .............................................399
LDP SYSTEM SETTINGS CANNOT BE
TURNED ON/OFF ON THE NAVIGATION
SCREEN ..........................................................
400
Description ........................................................... ..400
Diagnosis Procedure .............................................400
NORMAL OPERATING CONDITION ..............401
Description ........................................................... ..401
REMOVAL AND INSTALLATION ..............403
LANE CAMERA UNIT .................................... ..403
Removal and Installation ...................................... .403
WARNING SYSTEMS SWITCH .......................404
Removal and Installation ...................................... .404
DYNAMIC DRIVER ASSISTANCE SWITCH ...405
Exploded View ..................................................... .405
WARNING BUZZER .........................................406
Removal and Installation ...................................... .406
BSW
PRECAUTION ............... ............................
407
PRECAUTIONS .............................................. ..407
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
407
Precaution for BSW System Service ....................407
SYSTEM DESCRIPTION ..........................408
COMPONENT PARTS .................................... ..408
Component Parts Location .................................. .408
Component Description ........................................409
SYSTEM ...........................................................410
System Description .............................................. .410
Fail-safe (ADAS Control Unit) ...............................413
Fail-safe (Side Radar) ...........................................414
OPERATION .....................................................415
Switch Name and Function .................................. .415
System Display and Warning ................................415
HANDLING PRECAUTION ............................ ..417
Precautions for Blind Spot Warning ..................... .417
DIAGNOSIS SYSTEM (ADAS CONTROL
UNIT) .................................................................
418
On Board Diagnosis Function .............................. .418
CONSULT-III Function (ICC/ADAS) .....................419
DIAGNOSIS SYSTEM (SIDE RADAR LH) .......429
CONSULT-III Function (SIDE RADAR LEFT) ...... .429
DIAGNOSIS SYSTEM (SIDE RADAR RH) ......431
CONSULT-III Function (SIDE RADAR RIGHT) ... .431
ECU DIAGNOSIS INFORMATION ............433
ADAS CONTROL UNIT .................................. ..433
Reference Value .................................................. .433
Fail-safe ................................................................438
DTC Inspection Priority Chart ...............................439
DTC Index .............................................................440
SIDE RADAR LH ............................................ ..444
Reference Value .................................................. .444
Fail-safe ................................................................444
DTC Inspection Priority Chart ...............................445
Revision: 2010 May2011 QX56

DAS-10
Diagnosis Procedure .............................................491
U0126 STRG SEN CAN 1 ................................492
DTC Logic ............................................................ ..492
Diagnosis Procedure .............................................492
U0401 ECM CAN 1 ..........................................493
DTC Logic ............................................................ ..493
Diagnosis Procedure .............................................493
U0402 TCM CAN 1 ..........................................494
DTC Logic ............................................................ ..494
Diagnosis Procedure .............................................494
U0405 ADAS CAN 2 ........................................495
DTC Logic ............................................................ ..495
Diagnosis Procedure .............................................495
U0415 VDC CAN 1 ..........................................496
DTC Logic ............................................................ ..496
Diagnosis Procedure .............................................496
U0428 STRG SEN CAN 2 ................................497
DTC Logic ............................................................ ..497
Diagnosis Procedure .............................................497
U150B ECM CAN 3 .........................................498
DTC Logic ............................................................ ..498
Diagnosis Procedure .............................................498
U150C VDC CAN 3 ..........................................499
DTC Logic ............................................................ ..499
Diagnosis Procedure .............................................499
U150D TCM CAN 3 ..........................................500
DTC Logic ............................................................ ..500
Diagnosis Procedure .............................................500
U150E BCM CAN 3 .........................................501
DTC Logic ............................................................ ..501
Diagnosis Procedure .............................................501
U1503 SIDE RDR L CAN 2 ..............................502
DTC Logic ............................................................ ..502
Diagnosis Procedure .............................................502
U1504 SIDE RDR L CAN 1 ..............................503
DTC Logic ............................................................ ..503
Diagnosis Procedure .............................................503
U1505 SIDE RDR R CAN 2 .............................504
DTC Logic ............................................................ ..504
Diagnosis Procedure .............................................504
U1506 SIDE RDR R CAN 1 .............................505
DTC Logic ............................................................ ..505
Diagnosis Procedure .............................................505
U1507 LOST COMM(SIDE RDR R) .................506
DTC Logic ............................................................ ..506
Diagnosis Procedure .............................................506
U1508 LOST COMM(SIDE RDR L) .................507
DTC Logic ............................................................ .507
Diagnosis Procedure .............................................507
U1513 METER CAN 3 ......................................508
DTC Logic ............................................................ .508
Diagnosis Procedure .............................................508
U1514 STRG SEN CAN 3 ................................509
DTC Logic ............................................................ .509
Diagnosis Procedure .............................................509
U1518 SIDE RDR L CAN 3 ..............................510
DTC Logic ............................................................ .510
Diagnosis Procedure .............................................510
U1519 SIDE RDR R CAN 3 ..............................511
DTC Logic ............................................................ .511
Diagnosis Procedure .............................................511
POWER SUPPLY AND GROUND CIRCUIT ....512
ADAS CONTROL UNIT .......................................... .512
ADAS CONTROL UNIT : Diagnosis Procedure ....512
SIDE RADAR LH .................................................... .512
SIDE RADAR LH : Diagnosis Procedure ..............512
SIDE RADAR RH ................................................... .513
SIDE RADAR RH : Diagnosis Procedure .............513
RIGHT/LEFT SWITCHING SIGNAL CIRCUIT ..514
Diagnosis Procedure ............................................ .514
WARNING SYSTEMS SWITCH CIRCUIT ........515
Component Function Check ................................ .515
Diagnosis Procedure .............................................515
Component Inspection ..........................................516
WARNING SYSTEMS ON INDICATOR CIR-
CUIT ..................................................................
517
Component Function Check ................................ .517
Diagnosis Procedure .............................................517
Component Inspection ..........................................518
WARNING BUZZER CIRCUIT .........................519
Component Function Check ................................ .519
Diagnosis Procedure .............................................519
SYMPTOM DIAGNOSIS ...........................521
BSW SYSTEM SYMPTOMS .......................... ..521
Symptom Table .................................................... .521
NORMAL OPERATING CONDITION ...............522
Description ........................................................... .522
REMOVAL AND INSTALLATION .............523
SIDE RADAR .................................................. ..523
Removal and Installation ...................................... .523
BSW INDICATOR .............................................525
Removal and Installation ...................................... .525
Revision: 2010 May2011 QX56

DAS
DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)
DAS-21
< SYSTEM DESCRIPTION > [ADAS CONTROL UNIT]
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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:0000000006223475
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-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

DAS-58
< DTC/CIRCUIT DIAGNOSIS >[ADAS CONTROL UNIT]
C1A01 POWER SUPPLY CIRCUIT 1,
C1A02 POWER SUPPLY CIRCUIT 2
C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2
DTC LogicINFOID:0000000006223483
DTC DETECTION 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 Reading” with CONSULT-III.
4. Check if the “C1A01” or “C1A02” is detected as t he current malfunction in “Self Diagnostic Result” of “ICC/
ADAS”.
Is
“C1A01” or “C1A02” detected as the current malfunction?
YES >> Refer to DAS-58, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223484
1.CHECK ADAS CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit of ADAS control unit. Refer to DAS-62, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A01 (1) POWER SUPPLY
CIR The battery voltage sent to ADAS control unit re-
mains less than 7.9 V for 5 seconds
 Connector, harness, fuse
 ADAS control unit
C1A02
(2) POWER SUPPLY
CIR 2 The battery voltage sent to ADAS control unit re-
mains more than 19.3 V for 5 seconds
Revision: 2010 May2011 QX56

DAS-62
< DTC/CIRCUIT DIAGNOSIS >[ADAS CONTROL UNIT]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000006223493
1.CHECK ADAS CONTROL UNIT POWER SUPPLY CIRCUIT
Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ADAS control unit power supply circuit.
2.CHECK ADAS CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ADAS control unit connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the ADAS control unit ground circuit.
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
ADAS control unit
GroundIgnition
switch
Connector Terminal
B61 16 OFF 0 V
ON Battery volt-
age
ADAS control unit
GroundContinuity
Connector Terminal
B61 6 Existed
Revision: 2010 May2011 QX56