Nissan Quest E52. Instruction — part 212
BCS
POWER SUPPLY AND GROUND CIRCUIT
BCS-91
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000009651732
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
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 harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Signal name
Fuse and fusible link No.
Battery power supply
L
10
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
M123
70
Battery voltage
57
BCM
Ground
Continuity
Connector
Terminal
M123
67
Existed
BCS-92
< DTC/CIRCUIT DIAGNOSIS >
COMBINATION SWITCH OUTPUT CIRCUIT
COMBINATION SWITCH OUTPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000009651733
1.
CHECK OUTPUT 1 - 5 CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect BCM and combination switch connectors.
3.
Check continuity between BCM harness connector and combination switch harness connector.
Does continuity exist?
YES
>> GO TO 2.
NO
>> Repair harnesses or connectors.
2.
CHECK OUTPUT 1 - 5 CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Repair harnesses or connectors.
NO
>> GO TO 3.
3.
CHECK BCM OUTPUT VOLTAGE
1.
Connect BCM connector.
2.
Check voltage between BCM harness connector and ground.
Is the measurement value normal?
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
OUTPUT 1
M121
36
M103
11
Existed
OUTPUT 2
35
9
OUTPUT 3
34
7
OUTPUT 4
33
10
OUTPUT 5
32
13
System
BCM
Ground
Continuity
Connector
Terminal
OUTPUT 1
M121
36
Not existed
OUTPUT 2
35
OUTPUT 3
34
OUTPUT 4
33
OUTPUT 5
32
System
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
OUTPUT 1
M121
36
7.0 - 8.0 V
OUTPUT 2
35
OUTPUT 3
34
OUTPUT 4
33
OUTPUT 5
32
PKIB4960J
BCS
COMBINATION SWITCH OUTPUT CIRCUIT
BCS-93
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
YES
>> Replace combination switch.
NO
>> Replace BCM. Refer to
BCS-94
< DTC/CIRCUIT DIAGNOSIS >
COMBINATION SWITCH INPUT CIRCUIT
COMBINATION SWITCH INPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000009651734
1.
CHECK INPUT 1 - 5 CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect BCM and combination switch connectors.
3.
Check continuity between BCM harness connector and combination switch harness connector.
Does continuity exist?
YES
>> GO TO 2.
NO
>> Repair harnesses or connectors.
2.
CHECK INPUT 1 - 5 CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Repair harnesses or connectors.
NO
>> GO TO 3.
3.
CHECK BCM INPUT SIGNAL
1.
Connect BCM and combination switch connectors.
2.
Turn ON any switch in the system that is malfunction.
3.
Check voltage between BCM harness connector and ground.
Is the measurement value normal?
Yes
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
INPUT 1
M121
6
M103
12
Existed
INPUT 2
5
14
INPUT 3
4
5
INPUT 4
3
2
INPUT 5
2
8
System
BCM
Ground
Continuity
Connector
Terminal
INPUT 1
M121
6
Not existed
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
System
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
INPUT 1
M121
6
Refer to
.
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
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