Nissan X-Trail 32. Instruction — part 451
B2428 AUTOMATIC BACK DOOR CONTROL UNIT
DLK-145
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
C
D
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G
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DLK
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B2428 AUTOMATIC BACK DOOR CONTROL UNIT
DTC Description
INFOID:0000000010708097
DTC DETECTION LOGIC
POSSIBLE CAUSE
Automatic back door control unit
FAIL-SAFE
Inhibit automatic back door operation
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Operate automatic back door.
3.
Check “Self Diagnostic Result” mode of “AUTO BACK DOOR” using CONSULT.
Is DTC detected?
YES
>> Refer to
DLK-145, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010708098
1.
REPLACE AUTOMATIC BACK DOOR CONTROL UNIT
When DTC B2428 is detected, replace automatic back door control unit.
>> Replace automatic back door control unit. Refer to
DLK-327, "Removal and Installation"
.
DTC No.
CONSULT screen items (Trou-
ble diagnosis content)
DTC detecting condition
B2428
AUTO BACK DR CNT UNIT
(Auto back door control unit)
Automatic back door control unit detected CPU malfunction
DLK-146
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
B242A CLOSURE CONDITION
B242A CLOSURE CONDITION
DTC Description
INFOID:0000000010708099
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Entry of foreign materials to back door lock assembly
• Back door mechanism
• Close switch
• Half latch switch
• Open switch
• Harness or connectors (open or shorted)
• Automatic back door control unit
FAIL-SAFE
Inhibit automatic back door operation
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Operate back door auto closure operation.
3.
Check “Self Diagnostic Result” mode of “AUTO BACK DOOR” using CONSULT.
Is DTC detected?
YES
>> Refer to
DLK-146, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010708100
1.
CHECK FOR FOREIGN MATERIALS IN BACK DOOR LOCK ASSEMBLY
Check for entry of foreign materials in back door lock assembly.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Remove foreign materials.
2.
CHECK BACK DOOR OPEN/CLOSE OPERATION
Instructionly check open and close operation of back door.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK MONITOR ITEM
1.
Turn ignition switch ON.
2.
Select “AUTO BACK DOOR” using CONSULT.
3.
Select “HALF LATCH SW”, “OPEN SW” and “CLOSE SW” in “DATA MONITOR” mode.
4.
Check that the function operates normally according to the following conditions.
DTC No.
CONSULT screen items (Trou-
ble diagnosis content)
DTC detecting condition
B242A
CLSR CONDITION
(Closure condition)
Automatic back door control unit detects malfunctions of open switch,
close switch and half latch switch when auto closure of back door operates
B242A CLOSURE CONDITION
DLK-147
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
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DLK
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Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 4.
4.
CHECK SWITCH INPUT 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?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
CHECK SWITCH CIRCUIT
1.
Disconnect automatic back door control unit 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-327, "Removal and Installation"
.
NO
>> Repair or replace harness.
6.
CHECK SWITCH GROUND CIRCUIT
Check continuity between back door lock assembly harness connector and ground.
Monitor item
Condition
Status
HALF LATCH SW
Back door
Fully closed
OFF
Open
ON
OPEN SW
Closure operation
ON
Other than above
OFF
CLOSE SW
Closure operation
ON
Other than above
OFF
(+)
(–)
Voltage
(Approx.)
Back door lock assembly
Connector
Terminal
D172
4
Ground
12.2 V
5
12.2 V
6
12 V
Automatic back door control unit
Back door lock assembly
Continuity
Connector
Terminal
Connector
Terminal
B24
3
D172
6
Existed
5
5
11
4
Automatic back door control unit
Ground
Continuity
Connector
Terminal
B24
3
Not existed
5
11
DLK-148
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
B242A CLOSURE CONDITION
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace back door lock assembly ground circuit.
7.
CHECK INTERMITTENT INCIDENT
GI-44, "Intermittent Incident"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace harness.
8.
REPLACE BACK DOOR LOCK ASSEMBLY
1.
Replace back door lock assembly.
2.
Erase DTC.
3.
Perform DTC confirmation procedure for DTC 242A. Refer to
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Replace automatic back door control unit. Refer to
DLK-327, "Removal and Installation"
.
Back door lock assembly
Ground
Continuity
Connector
Terminal
D172
8
Existed
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