Infiniti QX56 (Z62). Manual — part 364
DAS
U0401 ECM CAN 1
DAS-493
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
U0401 ECM CAN 1
DTC Logic
INFOID:0000000006228270
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
"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 “U0401” is detected as the current malfunction 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 Procedure
INFOID: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 communication system inspection. Repair or replace the malfunctioning parts.
DAS-486, "ADAS CONTROL UNIT : DTC Logic"
.
NO
>> GO TO 2.
2.
CHECK ECM SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
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
DAS-494
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
U0402 TCM CAN 1
U0402 TCM CAN 1
DTC Logic
INFOID:0000000006228272
DTC DETECTION LOGIC
NOTE:
If DTC “U0402” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
"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 malfunction 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 Procedure
INFOID:0000000006228273
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0402” in “Self Diagnostic Result” of “ICC/ADAS”.
Is “U1000” detected?
YES
>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
DAS-486, "ADAS CONTROL UNIT : DTC Logic"
.
NO
>> GO TO 2.
2.
CHECK TCM SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
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
DAS
U0405 ADAS CAN 2
DAS-495
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
C
D
E
F
G
H
I
J
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L
M
B
N
P
A
U0405 ADAS CAN 2
DTC Logic
INFOID: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"
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 malfunction 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 Procedure
INFOID:0000000006223934
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0405” in “Self Diagnostic Result” of “SIDE RADAR RIGHT/LEFT”.
Is “U1000” detected?
YES
>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
DAS-485, "SIDE RADAR LH : DTC Logic"
(SIDE RADAR LEFT),
(SIDE RADAR RIGHT).
NO
>> GO TO 2.
2.
CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS
Check if any DTC is detected 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
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.
DAS-496
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
U0415 VDC CAN 1
U0415 VDC CAN 1
DTC Logic
INFOID:0000000006228274
DTC DETECTION LOGIC
NOTE:
If DTC “U0415” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
"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 “U0415” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is “U0415” detected as the current malfunction?
YES
>> Refer to
DAS-496, "Diagnosis Procedure"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000006228275
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 communication system inspection. Repair or replace the malfunctioning parts.
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
.
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
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)
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