Infiniti QX56 (Z62). Manual — part 413
DLK-118
< DTC/CIRCUIT DIAGNOSIS >
DOOR SWITCH
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK DOOR SWITCH CIRCUIT
1.
Disconnect BCM connector.
2.
Check continuity between door switch harness connector and BCM harness connector.
3.
Check continuity between door switch harness connector and ground.
(+)
(–)
Signal
(Reference value)
Door switch
Connector
Terminal
Driver side
B34
1
Ground
7.0 - 8.0 V
Passenger side
B220
7.0 - 8.0 V
Rear LH
B71
7.0 - 8.0 V
Rear RH
B221
7.0 - 8.0 V
PKIB4960J
PKIB4960J
PKIB4960J
PKIB4960J
Door switch
BCM
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B34
1
M69
47
Existed
Passenger side
B220
45
Rear LH
B71
48
Rear RH
B221
46
DOOR SWITCH
DLK-119
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-81, "Removal and Installation"
NO
>> Repair or replace harness.
3.
CHECK DOOR SWITCH GROUND CIRCUIT
Check continuity between door switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK DOOR SWITCH
DLK-119, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace malfunctioning door switch.
5.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000006225923
1.
CHECK DOOR SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect malfunctioning door switch connector.
3.
Check continuity between door switch terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunction door switch.
Door switch
Ground
Continuity
Connector
Terminal
Driver side
B34
1
Not existed
Passenger side
B220
Rear LH
B71
Rear RH
B221
Door switch
Ground
Continuity
Connector
Terminal
B34
3
Existed
B220
B71
B221
Door switch
Condition
Continuity
Terminal
1
3
Door switch
Pressed
Not existed
Released
Existed
DLK-120
< DTC/CIRCUIT DIAGNOSIS >
BACK DOOR SWITCH
BACK DOOR SWITCH
Component Function Check
INFOID:0000000006225924
1.
CHECK FUNCTION
1.
Select “DOOR LOCK” of “BCM” using CONSULT-III.
2.
Select “DOOR SW-BK” in “DATA MONITOR” mode.
3.
Check that the function operates normally according to the following conditions.
Is the inspection result normal?
YES
>> Door switch is OK.
NO
>> Refer to
DLK-120, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000006225925
1.
CHECK BACK DOOR SWITCH INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect back door lock assembly connector.
3.
Check signal between back door lock assembly harness connector and ground using oscilloscope.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK BACK DOOR SWITCH CIRCUIT
1.
Disconnect BCM connector.
2.
Check continuity between back door lock assembly harness connector and BCM harness connector.
3.
Check continuity between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-81, "Removal and Installation"
NO
>> Repair or replace harness.
Monitor item
Condition
Status
DOOR SW-BK
Driver side door
Open
On
Closed
Off
(+)
(–)
Signal
(Reference value)
Back door lock assembly
Connector
Terminal
D157
7
Ground
9.0 - 10.0 V
JPMIA0593GB
Back door lock assembly
BCM
Continuity
Connector
Terminal
Connector
Terminal
D157
7
M69
43
Existed
Back door lock assembly
Ground
Continuity
Connector
Terminal
D157
7
Not existed
BACK DOOR SWITCH
DLK-121
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
3.
CHECK BACK DOOR SWITCH GROUND CIRCUIT
Check continuity between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK BACK DOOR SWITCH
DLK-121, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace back door lock assembly.
5.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000006225926
1.
CHECK BACK DOOR SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect back door lock assembly connector.
3.
Check continuity between back door lock assembly terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace back door lock assembly.
Back door lock assembly
Ground
Continuity
Connector
Terminal
D157
8
Existed
Back door lock assembly
Condition
Continuity
Terminal
7
8
Door switch
Pressed
Not existed
Released
Existed
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