Infiniti QX56 (Z62). Manual — part 362
DAS
U1000 CAN COMM CIRCUIT
DAS-485
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
U1000 CAN COMM CIRCUIT
SIDE RADAR LH
SIDE RADAR LH : Description
INFOID:0000000006223905
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.
SIDE RADAR LH : DTC Logic
INFOID:0000000006223906
DTC DETECTION LOGIC
SIDE RADAR LH : Diagnosis Procedure
INFOID:0000000006223907
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 malfunction in “Self Diagnostic Result” of “SIDE RADAR
LEFT”.
Is “U1000” detected as the current malfunction?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
SIDE RADAR RH
SIDE RADAR RH : Description
INFOID:0000000006223908
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.
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U1000
CAN COMM CIRCUIT
If Side radar LH is not transmitting or receiving ITS
communication signal for 2 seconds or more
ITS communication system
DAS-486
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
U1000 CAN COMM CIRCUIT
SIDE RADAR RH : DTC Logic
INFOID:0000000006223909
DTC DETECTION LOGIC
SIDE RADAR RH : Diagnosis Procedure
INFOID: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 malfunction 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 : Description
INFOID: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 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:0000000006223912
DTC DETECTION LOGIC
NOTE:
If “U1000” is detected, first diagnose the CAN communication system.
ADAS CONTROL UNIT : Diagnosis Procedure
INFOID: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 malfunction 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
DAS
U1000 CAN COMM CIRCUIT
DAS-487
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
Is “U1000” detected as the current malfunction?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-40, "Intermittent Incident"
.
DAS-488
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
SIDE RADAR LH
SIDE RADAR LH : Description
INFOID:0000000006223914
CAN controller controls the communication of ITS communication signal and the error detection.
SIDE RADAR LH : DTC Logic
INFOID:0000000006223915
DTC DETECTION LOGIC
SIDE RADAR LH : Diagnosis Procedure
INFOID: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 malfunction 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 : Description
INFOID:0000000006223917
CAN controller controls the communication of ITS communication signal and the error detection.
SIDE RADAR RH : DTC Logic
INFOID:0000000006223918
DTC DETECTION LOGIC
SIDE RADAR RH : Diagnosis Procedure
INFOID: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 malfunction 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 : Description
INFOID:0000000006223920
CAN controller controls the communication of CAN 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
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