2011 INFINITI QX56 Factory Service Manual

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Page 873 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS-138
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U0401 ECM CAN 1
U0401 ECM CAN 1
DTC LogicINFOID:0000000006224392
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected along with DTC “U1000”, first diag

Page 874 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS
U0402 TCM CAN 1CCS-139
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U0402 TCM CAN 1
DTC LogicINFOID:0000000006224394
DTC DETECTION LOGIC
NOTE:
If DTC “U0402” is detected alon

Page 875 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS-140
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U0405 ADAS CAN 2
U0405 ADAS CAN 2
DTC LogicINFOID:0000000006224396
DTC DETECTION LOGIC
NOTE:
If DTC “U0405” is detected along with DTC “U
1000”, first d

Page 876 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS
U0415 VDC CAN 1CCS-141
< DTC/CIRCUIT DIAGNOSIS > [ICC]
C
D
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U0415 VDC CAN 1
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224398
DTC DETECTION LOGIC
NOT

CCS
U0415 VDC CAN 1CCS-141
< DTC/CIRCUIT DIAGNOSIS > [ICC]
C
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U0415 VDC CAN 1
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224398
DTC DETECTION LOGIC
NOTE:
If DTC “U0415” 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 “U0415” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0415” detected as the current malfunction?
YES >> Refer to CCS-141, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006224399
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0415” 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 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".
ICC SENSOR
ICC SENSOR : DTC LogicINFOID:0000000006224400
DTC DETECTION LOGIC
NOTE:
If DTC “U0415” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to CCS-145, "
ICC
SENSOR : DTC Logic".
DTC
(On board dis- play) Trouble diagnosis name DTC detecting condition Possible causes
U0415 (126) VDC CAN CIR1 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)
DTC Trouble diagnosis name DTC detecting condition Possible causes
U0415 VDC CAN CIR1 If ICC sensor detects an error signal that is re-
ceived from ABS actuator and electric unit
(control unit) via ADAS control unit ABS actuator and electric unit (control
unit)
Revision: 2010 May2011 QX56

Page 877 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS-142
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U0415 VDC CAN 1
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform “Al

Page 878 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS
U0428 STRG SEN CAN 2CCS-143
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U0428 STRG SEN CAN 2
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224402
DTC DETECTION

CCS
U0428 STRG SEN CAN 2CCS-143
< DTC/CIRCUIT DIAGNOSIS > [ICC]
C
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U0428 STRG SEN CAN 2
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DTC LogicINFOID:0000000006224402
DTC DETECTION LOGIC
NOTE:
If DTC “U0428” 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 “U0428” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0428” detected as the current malfunction?
YES >> Refer to CCS-143, "ADAS CONTROL UNIT : Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006224403
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0428” 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 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".
ICC SENSOR
ICC SENSOR : DTC LogicINFOID:0000000006224404
DTC DETECTION LOGIC
NOTE:
If DTC “U0428” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to CCS-145, "
ICC
SENSOR : DTC Logic".
DTC
(On board dis- play) Trouble diagnosis name DTC detecting condition Possible causes
U0428 (131) STRG SEN CAN CIR2 If ADAS control unit detects an error signal
that is received from steering angle sensor via
CAN communication Steering angle sensor
DTC Trouble diagnosis name DTC detecting condition Possible causes
U0428 STRG SEN CAN CIR2 If ICC sensor detects an error signal that is re-
ceived from steering angle sensor via ADAS
control unit Steering angle sensor
Revision: 2010 May2011 QX56

Page 879 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS-144
< DTC/CIRCUIT DIAGNOSIS >[ICC]
U0428 STRG SEN CAN 2
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the MAIN switch of ICC system ON.
3. Perform

Page 880 of 5598

INFINITI QX56 2011 Factory Service Manual
CCS
U1000 CAN COMM CIRCUITCCS-145
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U1000 CAN COMM CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006227995
CAN COM

CCS
U1000 CAN COMM CIRCUITCCS-145
< DTC/CIRCUIT DIAGNOSIS > [ICC]
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U1000 CAN COMM CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : DescriptionINFOID:0000000006227995
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 communicati on 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 high 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 syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting 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:0000000006227996
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006227997
1.PERFORM THE SELF-DIAGNOSIS
1. Turn the ignition switch ON.
2. Turn the MAIN switch of ICC system ON, and then wait for 30 seconds or more.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U1000” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected as the current malfunction?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
ICC SENSOR
ICC SENSOR : DescriptionINFOID:0000000006224409
ITS COMMUNICATION
ITS communication is a multiplex communication syste m. This enables the system to transmit and receive
large quantities of data at high speed by connec ting control units with 2 communication lines
ITS communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
ICC SENSOR : DTC LogicINFOID:0000000006224410
DTC DETECTION LOGIC
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

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