2011 INFINITI QX56 ABS

DAS-426
< SYSTEM DESCRIPTION >[BSW]
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-440
< ECU DIAGNOSIS INFORMATION >[BSW]
ADAS CONTROL UNIT
DTC Index
INFOID:0000000006223864
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

DAS
ADAS CONTROL UNITDAS-441
< ECU DIAGNOSIS INFORMATION > [BSW]
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- CRNT: A malfunction is detected now
- PAST: A malfunction was detected in the past
 IGN counter is displayed on FFD (Freeze Frame Data).
- 0: The malfunctions that are detected now CAN communication system (U1000, U1010)
- 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 malfunc tion is detected again in the process.
- If it is over 39, it is fixed to 39 unt il the self-diagnosis results are erased.
Other than CAN communication s ystem (Other than U1000, U1010)
- 1 - 49: It increases like 0 → 1 → 2 ··· 38 → 49 after returning to the normal condition whenever the ignition
switch OFF → ON. It returns to 0 when a malfunc tion is detected again in the process.
- If it is over 49, it is fixed to 49 unt il the self-diagnosis results are erased.
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
C1A00 0 CONTROL UNIT ON ON ON ON A, B, C, D, E, F, G DAS-470
C1A01 1 POWER SUPPLY CIR ON ON ON ON A, B, C, D, E, F, GDAS-471
C1A02 2 POWER SUPPLY CIR 2 ON ON ON ON A, B, C, D, E, F, GDAS-471
C1A03 3 VHCL SPEED SE CIRC ON ON ON ON A, B, C, D, E, F, G CCS-87
C1A04 4 ABS/TCS/VDC CIRC ON ON ON A, B, C, D, E, FCCS-89
C1A05 5 BRAKE SW/STOP L SW ON ON ON A, B, C, D, E, FCCS-90
C1A06 6 OPERATION SW CIRC ON ON A, B, E, FCCS-94
C1A12 12LASER BEAM OFFCN-
TR ON ON A, C, D, E
CCS-96
C1A13 13 STOP LAMP RLY FIX ON ON A, B, C, D, E CCS-97
C1A14 14 ECM CIRCUIT ON ON A, B, E, FCCS-103
C1A15 15 GEAR POSITION ON ON ON ON A, B, C, D, E, F, G DAS-473
C1A16 16 RADAR STAIN ON ON A, C, D, ECCS-106
C1A17 17 ICC SENSOR MALF ON ON A, B, C, D, ECCS-108
C1A18 18 LASER AIMING INCMP ON ON A, C, D, ECCS-109
C1A21 21ICC SENSOR HIGH
TEMP ON ON A, B, C, D, E
CCS-111
C1A24 24 NP RANGE ON ON ON ON A, B, C, D, E, F, G DAS-475
C1A26 26 ECD MODE MALF ON ON A, B, C, D, E CCS-115
C1A27 27 ECD PWR SUPLY CIR ON ON A, B, C, D, ECCS-116
C1A33 33CAN TRANSMISSION
ERR ON A, B, E
CCS-118
Revision: 2010 May2011 QX56

DAS-468
< BASIC INSPECTION >[BSW]
ACTION TEST
ACTION TEST
DescriptionINFOID:0000000006223878
Always perform the BSW system action test to check
that the system operates normally after replacing the
side radar LH/RH, or repairing any BSW system malfunction.
WARNING:
Be careful of traffic conditions and safety ar ound the vehicle when performing road test.
CAUTION:
Fully understand the following it ems well before the road test;
 Precautions: Refer to DAS-407, "
Precaution for BSW System Service".
 System description: Refer to DAS-410, "
System Description".
 Normal operating condition: Refer to DAS-522, "
Description".
Work ProcedureINFOID:0000000006223879
WARNING:
Be careful of traffic conditions and safety ar ound the vehicle when performing road test.
CAUTION:
Fully understand the following it ems well before the road test;
 Precautions: Refer to DAS-407, "
Precaution for BSW System Service".
 System description: Refer to DAS-410, "
System Description".
 Normal operating condition: Refer to DAS-522, "
Description".
1.BSW SYSTEM ACTION TEST
1. Drive the vehicle.
2. Turn warning systems switch ON (w arning systems ON indicator is ON).
3. Check BSW operation according to the following table.
Vehicle condition/ Driver's operation Action
Warning
systems ON indicator Vehicle speed
(Approx.)
[km/h (MPH)] Turn signal
condition Status of ve-
hicle detec- tion within detection
area Indication on the
BSW indicator Buzzer
OFF — — — OFF OFF
ON Less than ap-
prox.
29 (18) —— OFF OFF
Approx. 32 (20)
or more —
Ve h i c l e i s
absent OFF OFF
OFF Ve h i c l e i s
detected ON OFF
ON
(vehicle de-
tected direc- tion) Before turn
signal oper-
ates
Ve h i c l e i s detected Blink Short continuous beep
Ve h i c l e i s
detected af- ter turn sig-
nal operates Blink
OFF
JSOIA0251GBJSOIA0252GB
JSOIA0251GB
Revision: 2010 May2011 QX56

DAS-472
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1A03 VEHICLE SPEED SENSOR
C1A03 VEHICLE SPEED SENSOR
DTC LogicINFOID:0000000006223884
DTC DETECTION LOGIC
NOTE:
If DTC “C1A03” is detected along
with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
 Refer to DAS-486, "
ADAS CONTROL UNIT : DTC Logic" for DTC “U1000”.
 Refer to DAS-348, "
DTC Logic" for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Drive the vehicle at 30 km/h (19 MPH) or more. CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform “All DTC Reading” with CONSULT-III.
6. Check if the “C1A03” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A03” detected as the current malfunction?
YES-1 (BSW warning lamp: ON)>>Refer to DAS-472, "Diagnosis Procedure".
YES-2 (BSW warning lamp: OFF)>>Refer to CCS-87, "
Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223885
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A04” or “U1000” is detected other than “C1A03” in “Self Diagnostic Result” of “ICC/ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-440, "
DTC Index".
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
BRC-51, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board
display) Trouble diagnosis
name DTC detecting condition Possible causes
C1A03 (3) VHCL SPEED SE
CIRC If the vehicle speed signal (wheel speed) from
ABS actuator and electric
unit (control unit) re-
ceived by the ADAS control unit via CAN com-
munication, are inconsistent  Wheel speed sensor
 ABS actuator and electric unit (control
unit)
 ADAS control unit
Revision: 2010 May2011 QX56

DAS
C1A15 GEAR POSITIONDAS-473
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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C1A15 GEAR POSITION
DescriptionINFOID:0000000006228224
ADAS control unit judges the gear position based on the following signals.
 Current gear position signal transmit ted from TCM via CAN communication.
 Value of gear ratio calculated from input speed signal transmitted from TCM via CAN communication.
 Value of gear ratio calculated from the vehicle speed signal transmitted from ABS actuator and electric unit
(control unit) via CAN communication.
DTC LogicINFOID:0000000006228225
DTC DETECTION LOGIC
NOTE:
If DTC “C1A15” is detected along with DTC “U1000”, “C1A03”, or “C1A04 ”, first diagnose the DTC “U1000”,
“C1A03”, or “C1A04”.
 Refer to DAS-486, "
ADAS CONTROL UNIT : DTC Logic" for DTC “U1000”.
 Refer to DAS-472, "
DTC Logic" for DTC “C1A03”.
 Refer to CCS-89, "
DTC Logic" for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Drive the vehicle at 10 km/h (6 MPH) or faster for approximately 15 minutes or more. CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform “All DTC Readi ng” with CONSULT-III.
6. Check if “C1A15” is detected as the current malf unction in the “Self Diagnostic Result” of “ICC/ADAS”.
Is
“C1A15” detected as the current malfunction?
YES >> Refer to DAS-473, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228226
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A03”, “C1A04”, or “U1000” is detected other than “C1A15” in “Self Diagnostic Result” of “ICC/
ADAS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
DAS-440, "
DTC Index".
NO >> GO TO 2.
2.CHECK VEHICLE SPEED SIGNAL
Check that “VHCL SPEED SE” operates normally in “DATA MONITOR” of “ICC/ADAS”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
DTC
(On board dis- play) Trouble diagnosis
name DTC detecting condition Possible causes
C1A15 (15) GEAR POSITION A mismatch between an current gear posi-
tion signal transmitted from TCM via CAN
communication and a gear position calculat-
ed by the ADAS control unit continues for
approximately 11 minutes or more  Input speed sensor
 Vehicle speed sensor A/T (output speed
sensor)
TCM
Revision: 2010 May2011 QX56

DAS-474
< DTC/CIRCUIT DIAGNOSIS >[BSW]
C1A15 GEAR POSITION
YES >> GO TO 3.
NO >> GO TO 7.
3.CHECK GEAR POSITION
Check that “GEAR” operates normally in “DATA MONITOR” of “ICC/ADAS”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK GEAR POSITION SIGNAL
Check that “GEAR” operates normally in “DATA MONITOR” of “TRANSMISSION”.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 6.
5.CHECK INPUT SPEED SENSOR SIGNAL
Check that “INPUT SPEED” operates normally in “DATA MONITOR” of “TRANSMISSION”.
Is the inspection result normal?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> GO TO 6.
6.CHECK TCM SELF-DIAGNOSIS RESULTS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in “Sel f Diagnostic Result” of “TRANSMISSION”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
TM-78, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
7.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
1. Perform “All DTC Reading”.
2. Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
BRC-51, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
Revision: 2010 May2011 QX56

DAS
C1A39 STEERING ANGLE SENSORDAS-477
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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C1A39 STEERING ANGLE SENSOR
DTC LogicINFOID:0000000006228229
DTC DETECTION LOGIC
NOTE:
If DTC “C1A39” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-486,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “C1A39” is detected as the current malfunction in self-diagnosis results of “ICC/ADAS”.
Is
“C1A39” detected as the current malfunction?
YES >> Refer to DAS-477, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228230
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A39” 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-486, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (C ONTROL UNIT) SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
BRC-51, "
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
C1A39 (39) STRG SEN CIR If the steering angle sensor is malfunction Steering angle sensor
Revision: 2010 May2011 QX56