Nissan Murano. Instruction — part 363
U1000 CAN COMM CIRCUIT
DLK-63
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
BCM
BCM : Description
INFOID:0000000009718916
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 unit, 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-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-29, "CAN Communication Signal Chart"
BCM : DTC Logic
INFOID:0000000009718917
DTC DETECTION LOGIC
BCM : Diagnosis Procedure
INFOID:0000000009718918
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-44, "Intermittent Incident"
.
AUTOMATIC BACK DOOR CONTROL UNIT
AUTOMATIC BACK DOOR CONTROL UNIT : Description
INFOID:0000000009718919
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 unit, 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-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-29, "CAN Communication Signal Chart"
AUTOMATIC BACK DOOR CONTROL UNIT : DTC Logic
INFOID:0000000009718920
DTC DETECTION LOGIC
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009718921
1.
PERFORM SELF DIAGNOSTIC
DTC
CONSULT display de-
scription
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When BCM cannot communicate CAN com-
munication signal continuously for 2 seconds
or more.
CAN communication system
DTC
CONSULT display de-
scription
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When automatic back door control unit cannot
communicate CAN communication signal con-
tinuously for 2 seconds or more.
CAN communication system
DLK-64
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
U1000 CAN COMM CIRCUIT
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-44, "Intermittent Incident"
.
U1010 CONTROL UNIT (CAN)
DLK-65
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
U1010 CONTROL UNIT (CAN)
BCM
BCM : DTC Logic
INFOID:0000000009718922
DTC DETECTION LOGIC
BCM : Diagnosis Procedure
INFOID:0000000009718923
1.
REPLACE BCM
When DTC [U1010] is detected, replace BCM.
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
BCM : Special Repair Requirement
INFOID:0000000009718924
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to CONSULT operation instruction NATS-IVIS/NVIS.
>> Work end.
AUTOMATIC BACK DOOR CONTROL UNIT
AUTOMATIC BACK DOOR CONTROL UNIT : DTC Logic
INFOID:0000000009718925
DTC DETECTION LOGIC
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009718926
1.
REPLACE BCM
When DTC [U1010] is detected, replace automatic back door control unit.
>> Replace automatic back door control unit. Refer to
DLK-368, "Removal and Installation"
.
DTC
CONSULT display de-
scription
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT (CAN)
BCM detected internal CAN communication circuit malfunction.
BCM
DTC
CONSULT display
description
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT
(CAN)
Automatic back door control unit detected inter-
nal CAN communication circuit malfunction
Automatic back door control unit
DLK-66
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2401 IGNITION POWER SUPPLY CIRCUIT
B2401 IGNITION POWER SUPPLY CIRCUIT
Description
INFOID:0000000009718927
Automatic back door control unit receive ignition power supply condition signal from BCM via CAN communi-
cation, and compare the signal with ignition power supply condition of automatic back door control unit to
detect inflammation.
DTC Logic
INFOID:0000000009718928
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait for at least 1 second.
2.
Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009718929
1.
CHECK FUSE, FUSIBLE LINK AND CIRCUIT BREAKER
Check that the following fuse, fusible link and circuit breaker are not fusing.
Is the fuse fusing?
YES
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect automatic back door control unit connector.
3.
Check voltage between automatic back door control unit harness connector and ground.
Is the measurement value normal?
YES
>> INSPECTION END
NO
>> Repair or replace harness.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2401
IGNITION POWER
SUPPLY CIRCUIT
When the automatic power back door control unit
detects the following condition for 0.3 second or
more
• Power supply condition (OFF) of automatic back
door unit and Ignition position signal (ON) from
BCM via CAN
• Fuse
• Harness or connectors
(Ignition power supply condition
circuit is open or shorted)
Fuse No.
Signal name
3
Ignition power supply
(+)
(
−
)
Condition
Voltage
(Approx.)
Automatic back door control unit
Connector
Terminal
B8
9
Ground
Ignition switch
ON
Battery voltage
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