Nissan Murano Z51. Manual — part 392
DLK-76
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2418 CLUTCH POWER SUPPLY CIRCUIT
B2418 CLUTCH POWER SUPPLY CIRCUIT
Description
INFOID:0000000005517499
The clutch operates by the power supplied from the automatic back door control unit. It performs the duty con-
trol of the power supply to control the operation speed of the back door.
DTC Logic
INFOID:0000000005517500
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Operate automatic back door.
3.
Check “Self Diagnostic Result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005517501
1.
CHECK CLUTCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect automatic back door control unit connector and automatic back door unit connector.
3.
Check continuity between automatic back door control unit harness connector and automatic back door
unit harness connector.
4.
Check continuity between automatic back door control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace harness.
2.
CHECK CLUTCH
1.
Connect automatic back door control unit connector and automatic back door unit connector.
2.
Check voltage between automatic back door control unit harness connector and ground.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2418
CLUTCH POWER
SUPPLY CIRCUIT
When the automatic power back door control unit
detects any of the following conditions just after the
open/close operation
• Clutch power supply circuit is shorted.
• Clutch is shorted.
• Clutch
• Harness or connectors
(Clutch circuit is shorted)
• Automatic back door control unit
Automatic back door control unit
Automatic back door unit
Continuity
Connector
Terminal
Connector
Terminal
B7
33
B76
3
Existed
Automatic back door control unit
Ground
Continuity
Connector
Terminal
B7
33
Not existed
B2418 CLUTCH POWER SUPPLY CIRCUIT
DLK-77
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
>> Replace automatic back door unit. Refer to
DLK-370, "Removal and Installation"
(+)
(–)
Condition
Voltage (V)
(Approx.)
Automatic back door control unit
Connector
Terminal
B7
33
Ground
Automatic back
door
Active
Other than
above
0
JMKIA1866ZZ
DLK-78
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2419 OPEN SWITCH
B2419 OPEN SWITCH
Description
INFOID:0000000005517502
The open switch is integrated in the door lock assembly, and it detects the open condition of the back door
lock.
DTC Logic
INFOID:0000000005517503
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Operate automatic back door.
3.
Check “Self Diagnostic Result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005517504
1.
CHECK OPEN SWITCH SIGNAL
Check open switch (“OPEN SW”) in Data Monitor mode.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 2.
2.
CHECK AUTOMATIC BACK DOOR CONTROL UNIT OUTPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect back door lock assembly connector.
3.
Check voltage between back door lock assembly harness connector and ground.
Is the inspection result normal?
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2419
OPEN SWITCH
When the automatic power back door control unit
detects any of the following conditions
• The change of open switch cannot be detected
for 1 second or more after starting the closure
open output for the 3rd time in a row
• The change of open switch cannot be detected
for 0.5 second or more after starting the closure
close output for the 3rd time in a row
• The condition that the open switch is in the ON
position and the close switch is in the OFF posi-
tion is detected when starting the closure open/
close output for the 3rd time in a row
• Open switch
• Harness or connectors
(Open switch circuit is open or
shorted)
• Automatic back door control unit
Monitor item
Condition
Status
OPEN SW
Back door lock
Fully closed/Half latch
OFF
Open
ON
(+)
(–)
Voltage (V)
(Approx.)
Back door lock assembly
Connector
Terminal
D179
4
Ground
Battery voltage
B2419 OPEN SWITCH
DLK-79
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK OPEN SWITCH CIRCUIT
1.
Disconnect automatic back door control unit and back door lock assembly connector.
2.
Check continuity between automatic back door control unit harness connector and back door lock assem-
bly harness connector.
3.
Check continuity between automatic back door control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace automatic back door control unit. Refer to
DLK-370, "Removal and Installation"
.
NO
>> Repair or replace harness.
4.
CHECK OPEN SWITCH GROUND CIRCUIT
Check continuity between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace back door lock assembly ground circuit.
5.
CHECK OPEN SWITCH
DLK-79, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace back door lock assembly. Refer to
DLK-353, "DOOR LOCK : Removal and Installation"
6.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005517505
COMPONENT INSPECTION
1.
CHECK OPEN SWITCH
Check back door lock assembly (open switch).
Is the inspection result normal?
YES
>> INSPECTION END
Automatic back door control unit
Back door lock assembly
Continuity
Connector
Terminal
Connector
Terminal
B8
20
D179
4
Existed
Automatic back door control unit
Ground
Continuity
Connector
Terminal
B8
20
Not existed
Back door lock assembly
Ground
Continuity
Connector
Terminal
D179
8
Existed
Terminal
Condition
Continuity
Back door lock assembly (open switch)
4
8
Back door lock
Open
Existed
Fully closed/Half latch
Not existed
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