Infiniti G37 Coupe. Manual — part 376
POWER SUPPLY AND GROUND CIRCUIT
DLK-65
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000001683058
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connectors.
3.
Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair or replace harness or connector.
Terminal No.
Signal name
Fuse and fusible link No.
1
Battery power supply
K
11
10
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
M118
1
Battery voltage
M119
11
BCM
Ground
Continuity
Connector
Terminal
M119
13
Existed
DLK-66
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
DOOR SWITCH
DOOR SWITCH
Description
INFOID:0000000001683059
Detects door open/close condition.
Component Function Check
INFOID:0000000001683060
1.
CHECK FUNCTION
With CONSULT-III
Check door switches (“DOOR SW-DR”, “DOOR SW-AS”) in Data Monitor” mode with CONSULT-III.
Is the inspection result normal?
YES
>> Door switch is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001683061
1.
CHECK DOOR SWITCH INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between BCM harness connector and ground with oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK DOOR SWITCH CIRCUIT
1.
Disconnect BCM connector and door switch connector.
2.
Check continuity between BCM harness connector and door switch harness connector.
Monitor item
Condition
DOOR SW-DR
CLOSE
→
OPEN: OFF
→
ON
DOOR SW-AS
Terminals
Door condition
Voltage (V)
(Approx.)
(+)
(–)
BCM
connector
Terminal
M123
150
Ground
Driver side
OPEN
0
CLOSE
124
Passenger side
OPEN
0
CLOSE
JPMIA0011GB
JPMIA0011GB
DOOR SWITCH
DLK-67
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
3.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness between BCM and door switch.
3.
CHECK DOOR SWITCH
DLK-67, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace malfunctioning door switch. Refer to
DLK-238, "Removal and Installation"
4.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000001683062
1.
CHECK DOOR SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect door switch connector.
3.
Check continuity between door switch terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning door switch. Refer to
DLK-238, "Removal and Installation"
BCM connector
Terminal
Door switch
connector
Terminal
Continuity
M123
150
B16 (Driver side)
2
Existed
124
B216 (Passenger side)
BCM connector
Terminal
Ground
Continuity
M123
150
Not existed
124
Terminal
Door switch condition
Continuity
Door switch
2
Ground part of door switch
Pressed
Not existed
Released
Existed
DLK-68
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND UNLOCK SWITCH
DRIVER SIDE
DRIVER SIDE : Description
INFOID:0000000001683063
Transmits door lock/unlock operation to BCM.
DRIVER SIDE : Component Function Check
INFOID:0000000001683064
1.
CHECK FUNCTION
With CONSULT-III
Check door lock and unlock switch (“CDL LOCK SW ”, “CDL UNLOCK SW”) in Data Monitor mode with CON-
SULT-III.
Is the inspection result normal?
YES
>> Door lock and unlock switch is OK.
NO
>> Refer to
DLK-68, "DRIVER SIDE : Diagnosis Procedure"
DRIVER SIDE : Diagnosis Procedure
INFOID:0000000001879565
1.
CHECK POWER WINDOW SWITCH OUTPUT SIGNAL
1.
Door of driver side and passenger side is closed.
2.
Check signal between BCM harness connector and ground with oscilloscope when door lock and unlock
switch (driver side) is turned to “LOCK” or “UNLOCK”.
3.
Check that signals which are shown in the figure below can be detected during 10 seconds just after door
lock and unlock switch (driver side) is turned to “LOCK” or “UNLOCK”.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK POWER WINDOW SWITCH GROUND
1.
Turn ignition switch OFF.
2.
Disconnect power window main switch connector.
3.
Check continuity between power window main switch harness connector and ground.
Is the inspection result normal?
Monitor item
Condition
CDL LOCK SW
LOCK
: ON
UNLOCK
: OFF
CDL UNLOCK SW
LOCK
: OFF
UNLOCK
: ON
Terminal
Signal
(Reference value)
(+)
(–)
BCM connector
Terminal
M123
132
Ground
JPMIA0013GB
Power window main switch connector
Description
Continuity
D8
15
Ground
Existed
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