Infiniti QX56 (Z62). Manual — part 286
DAS
U0428 STRG SEN CAN 2
DAS-181
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C
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A
U0428 STRG SEN CAN 2
DTC Logic
INFOID:0000000006228143
DTC DETECTION LOGIC
NOTE:
If DTC “U0428” 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 DCA system ON.
3.
Perform “All DTC Reading” with CONSULT-III.
4.
Check if the “U0428” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is “U0428” detected as the current malfunction?
YES
>> Refer to
DAS-181, "Diagnosis Procedure"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000006228144
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 communication system inspection. Repair or replace the malfunctioning parts.
DAS-182, "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
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
DAS-182
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : Description
INFOID:0000000006228145
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 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-
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 style (two lines twisted) for noise immunity.
ADAS CONTROL UNIT : DTC Logic
INFOID:0000000006228146
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis Procedure
INFOID:0000000006228147
1.
PERFORM THE SELF-DIAGNOSIS
1.
Turn the ignition switch ON.
2.
Turn the DCA 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 malfunction 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"
.
ACCELERATOR PEDAL ACTUATOR
ACCELERATOR PEDAL ACTUATOR : Description
INFOID:0000000006223619
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 style (two lines twisted) for noise immunity.
ACCELERATOR PEDAL ACTUATOR : DTC Logic
INFOID:0000000006223620
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
DAS
U1000 CAN COMM CIRCUIT
DAS-183
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
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A
ACCELERATOR PEDAL ACTUATOR : Diagnosis Procedure
INFOID:0000000006223621
1.
PERFORM THE SELF-DIAGNOSIS
1.
Turn the ignition switch ON.
2.
Turn the DCA 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 malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.
Is “U1000” detected as the current malfunction?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U1000
CAN COMM CIRCUIT
If accelerator pedal actuator is not transmitting or
receiving ITS communication signal for 2 sec-
onds or more
ITS communication system
DAS-184
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
ADAS CONTROL UNIT
ADAS CONTROL UNIT : Description
INFOID:0000000006228148
CAN controller controls the communication of CAN communication signal and ITS communication signal, and
the error detection.
ADAS CONTROL UNIT : DTC Logic
INFOID:0000000006228149
DTC DETECTION LOGIC
ADAS CONTROL UNIT : Diagnosis Procedure
INFOID:0000000006228150
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn the DCA system ON.
2.
Perform “All DTC Reading” with CONSULT-III.
3.
Check if the “U1010” is detected as the current malfunction 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
ACCELERATOR PEDAL ACTUATOR
ACCELERATOR PEDAL ACTUATOR : Description
INFOID:0000000006223625
CAN controller controls the communication of ITS communication signal and the error detection.
ACCELERATOR PEDAL ACTUATOR : DTC Logic
INFOID:0000000006223626
DTC DETECTION LOGIC
ACCELERATOR PEDAL ACTUATOR : Diagnosis Procedure
INFOID:0000000006223627
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn the DCA system ON.
2.
Perform “All DTC Reading” with CONSULT-III.
3.
Check if the “U1010” is detected as the current malfunction in “Self Diagnostic Result” of “ACCELE
PEDAL ACT”.
Is “U1010” detected as the current malfunction?
YES
>> Replace the accelerator pedal actuator. Refer to
.
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
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U1010
CONTROL UNIT (CAN)
If accelerator pedal actuator detects malfunc-
tion by CAN controller initial diagnosis
Accelerator pedal actuator
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