INFINITI QX56 2011 Factory Service Manual

DAS-486
< DTC/CIRCUIT DIAGNOSIS >[BSW]
U1000 CAN COMM CIRCUIT
SIDE RADAR RH : DTC Logic
INFOID:0000000006223909
DTC DETECTION LOGIC
SIDE RADAR RH : Diagnosis ProcedureINFOID:0000000006223910
1.PERFORM THE SELF-DIAGNOSIS
1. Start the engine.
2. Turn the BSW system ON, and then wait for 2 seconds or more.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006223911
CAN COMMUNICATION
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units , and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a hi gh rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
ITS COMMUNICATION
 ITS communication is a multiplex communication system . This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with 2 communication lines.
 ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006223912
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006223913
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the BSW system ON, and then wait for 30 seconds or more.
3. Perform “All DTC Reading” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
DTC Trouble diagnosis name DTC detecting condition Possible causes
U1000 CAN COMM CIRCUIT If Side radar RH is not transmitting or receiving
ITS communication signal for 2 seconds or more ITS communication system
DTC
(On board display) Trouble diagnosis name DTC detecting condition Possible causes
U1000 (100) CAN COMM CIRCUIT If ADAS control unit is not transmitting or receiv-
ing CAN communication signal or ITS communi-
cation signal for 2 seconds or more  CAN communication system
 ITS communication system
Revision: 2010 May2011 QX56

DAS
U1000 CAN COMM CIRCUITDAS-487
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Is “U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
Revision: 2010 May2011 QX56

DAS-488
< DTC/CIRCUIT DIAGNOSIS >[BSW]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
SIDE RADAR LH
SIDE RADAR LH : DescriptionINFOID:0000000006223914
CAN controller controls the communication of
ITS communication signal and the error detection.
SIDE RADAR LH : DTC LogicINFOID:0000000006223915
DTC DETECTION LOGIC
SIDE RADAR LH : Diagnosis ProcedureINFOID:0000000006223916
1.CHECK SELF-DIAGNOSIS RESULT
1. Turn the BSW system ON.
2. Perform “All DTC Reading” with CONSULT-III.
3. Check if the “U1010” is detected as the current ma lfunction in “Self Diagnostic Result” of “SIDE RADAR
LEFT”.
Is
“U1010” detected as the current malfunction?
YES >> Replace the side radar LH. DAS-523, "Removal and Installation".
NO >> INSPECTION END
SIDE RADAR RH
SIDE RADAR RH : DescriptionINFOID:0000000006223917
CAN controller controls the communication of ITS communication signal and the error detection.
SIDE RADAR RH : DTC LogicINFOID:0000000006223918
DTC DETECTION LOGIC
SIDE RADAR RH : Diagnosis ProcedureINFOID:0000000006223919
1.CHECK SELF-DIAGNOSIS RESULT
1. Turn the BSW system ON.
2. Perform “All DTC Reading” with CONSULT-III.
3. Check if the “U1010” is detected as the current ma lfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT”.
Is
“U1010” detected as the current malfunction?
YES >> Replace the side radar RH. DAS-523, "Removal and Installation".
NO >> INSPECTION END
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006223920
CAN controller controls the communication of CA N communication signal and ITS communication signal, and
the error detection.
DTC Trouble diagnosis name DTC detecting condition Possible cause
U1010 CONTROL UNIT (CAN) If side radar LH detects malfunction by CAN controller initial
diagnosis.
Side radar LH
DTC Trouble diagnosis name DTC detecting condition Possible cause
U1010 CONTROL UNIT (CAN) If Side radar RH detects malfunction by CAN controller initial
diagnosis. Side radar RH
Revision: 2010 May2011 QX56

DAS
U1010 CONTROL UNIT (CAN)DAS-489
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ADAS CONTROL UNIT : DTC LogicINFOID:0000000006223921
DTC DETECTION LOGIC
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006223922
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn the BSW system ON.
2. Perform “All DTC Readi ng” with CONSULT-III.
3. Check if the “U1010” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1010” detected as the current malfunction?
YES >> Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
NO >> INSPECTION END
DTC
(On board
display) Trouble diagnosis name DTC detecting condition Possible causes
U1010 (110) CONTROL UNIT (CAN)
If ADAS control unit detects malfunction by
CAN controller initial diagnosis ADAS control unit
Revision: 2010 May2011 QX56

DAS-490
< DTC/CIRCUIT DIAGNOSIS >[BSW]
U0104 ADAS CAN 1
U0104 ADAS CAN 1
DTC LogicINFOID:0000000006223923
DTC DETECTION LOGIC
NOTE:
If DTC “U0104” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
DAS-485, "
SIDE RADAR LH : DTC Logic"
(SIDE RADAR LEFT), DAS-486, "SIDE RADAR RH : DTC Logic" (SIDE RADAR RIGHT).
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Reading” with CONSULT-III
4. Check if the U0104 is detected as the current ma lfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT/LEFT”.
Is the DTC
“U0104” detected?
YES >> Refer to DAS-490, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223924
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0104” in “Self Diagnostic Resu lt” of “SIDE RADAR RIGHT/LEFT”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to DAS-485, "
SIDE RADAR LH : DTC Logic" (SIDE RADAR LEFT), DAS-486, "SIDE
RADAR RH : DTC Logic" (SIDE RADAR RIGHT).
NO >> GO TO 2.
2.CHECK ADAS CONTROL UNIT SE LF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf 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 >> Replace side radar LH or RH. Refer to DAS-523, "
Removal and Installation"
DTC Trouble diagnosis name DTC detecting condition Possible cause
U0104 ADAS CAN CIR1 Side radar detected an error of ITS communication signal
that was received from ADAS control unit.
ADAS control unit
Revision: 2010 May2011 QX56

DAS
U0121 VDC CAN 2DAS-491
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U0121 VDC CAN 2
DTC LogicINFOID:0000000006228231
DTC DETECTION LOGIC
NOTE:
If DTC “U0121” is detected along with DTC “U 1000”, 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 “U0121” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0121” detected as the current malfunction?
YES >> Refer to DAS-491, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228232
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0121” 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
U0121 (127) VDC CAN CIR2 If ADAS control unit detects an error signal
that is received from
ABS actuator and electric
unit (control unit) via CAN communication ABS actuator and electric unit (control
unit)
Revision: 2010 May2011 QX56

DAS-492
< DTC/CIRCUIT DIAGNOSIS >[BSW]
U0126 STRG SEN CAN 1
U0126 STRG SEN CAN 1
DTC LogicINFOID:0000000006228233
DTC DETECTION LOGIC
NOTE:
If DTC “U0126” is detected along with DTC “U
1000”, 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 Reading” with CONSULT-III.
4. Check if the “U0126” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0126” detected as the current malfunction?
YES >> Refer to DAS-492, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228234
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “U0126” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. 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 (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 dis-
play) Trouble diagnosis name DTC detecting condition Possible causes
U0126 (130) STRG SEN CAN CIR1 If ADAS control unit detects an error signal
that is received from steering angle sensor via
CAN communication
Steering angle sensor
Revision: 2010 May2011 QX56

DAS
U0401 ECM CAN 1DAS-493
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U0401 ECM CAN 1
DTC LogicINFOID:0000000006228270
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected along with DTC “U 1000”, 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 “U0401” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0401” detected as the current malfunction?
YES >> Refer to DAS-493, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228271
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0401” 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 ECM SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “ENGINE”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
EC-98, "
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
U0401 (120) ECM CAN CIR1 If ADAS control unit detects an error signal
that is received from ECM via CAN communi-
cation
ECM
Revision: 2010 May2011 QX56

DAS-494
< DTC/CIRCUIT DIAGNOSIS >[BSW]
U0402 TCM CAN 1
U0402 TCM CAN 1
DTC LogicINFOID:0000000006228272
DTC DETECTION LOGIC
NOTE:
If DTC “U0402” is detected along with DTC “U
1000”, 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 Reading” with CONSULT-III.
4. Check if the “U0402” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0402” detected as the current malfunction?
YES >> Refer to DAS-494, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228273
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected ot her than “U0402” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communication system inspecti on. Repair or replace the malfunctioning parts.
Refer to DAS-486, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK TCM SELF-DIAGNOSIS RESULTS
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".
DTC
(On board dis-
play) Trouble diagnosis
name DTC detecting condition Possible causes
U0402 (122) TCM CAN CIRC1 If ADAS control unit detects an error signal
that is received from TCM via CAN communi-
cation
TCM
Revision: 2010 May2011 QX56

DAS
U0405 ADAS CAN 2DAS-495
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U0405 ADAS CAN 2
DTC LogicINFOID:0000000006223933
DTC DETECTION LOGIC
NOTE:
If DTC “U0405” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to DAS-485, "
SIDE RADAR LH : DTC Logic"
(SIDE RADAR LEFT), DAS-485, "SIDE RADAR LH : DTC Logic" (SIDE RADAR RIGHT).
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Reading” with CONSULT-III
4. Check if the U0405 is detected as the current ma lfunction in “Self Diagnostic Result” of “SIDE RADAR
RIGHT/LEFT”.
Is the DTC
“U0405” detected?
YES >> Refer to DAS-495, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006223934
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0405” in “S elf Diagnostic Result” of “SIDE RADAR RIGHT/LEFT”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to DAS-485, "
SIDE RADAR LH : DTC Logic" (SIDE RADAR LEFT), DAS-486, "SIDE
RADAR RH : DTC Logic" (SIDE RADAR RIGHT).
NO >> GO TO 2.
2.CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf 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 >> Replace side radar LH or RH. Refer to DAS-523, "
Removal and Installation".
DTC Trouble diagnosis name DTC detecting condition Possible cause
U0405 ADAS CAN CIR2 Side radar detected an error of ITS communication signal
that was received from ADAS control unit.
ADAS control unit.
Revision: 2010 May2011 QX56