Nissan Qashqai (2007-2010). Manual — part 1486
BCS-34
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000000924627
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not fusing.
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.
Terminal No.
Signal name
Fuses and fusible link No.
41
Battery power supply
9
57
J
37
ACC power supply
5
38
Ignition power supply
4
Terminals
Ignition switch position
(+)
(
−
)
BCM
OFF
ACC
ON
Connector
Terminal
M65
37
Ground
Approx.
0 V
Battery
voltage
Battery
voltage
38
Approx.
0 V
Approx.
0 V
Battery
voltage
M66
41
Battery
voltage
Battery
voltage
Battery
voltage
M67
57
BCM
Ground
Continuity
Connector
Terminal
M67
55
Existed
BCS
COMBINATION SWITCH INPUT CIRCUIT
BCS-35
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
COMBINATION SWITCH INPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000000924629
1.
CHECK INPUT 1 - 5 SYSTEM 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 SYSTEM 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?
YES
>> GO TO 4.
NO
>> Replace BCM. Refer to
.
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
INPUT 1
M65
33
M27
1
Existed
INPUT 2
32
2
INPUT 3
35
3
INPUT 4
34
4
INPUT 5
31
5
System
BCM
Ground
Continuity
Connector
Terminal
INPUT 1
M65
33
Not existed
INPUT 2
32
INPUT 3
35
INPUT 4
34
INPUT 5
31
System
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
INPUT 1
M65
33
Refer to
.
INPUT 2
32
INPUT 3
35
INPUT 4
34
INPUT 5
31
BCS-36
< COMPONENT DIAGNOSIS >
COMBINATION SWITCH INPUT CIRCUIT
4.
CHECK COMBINATION SWITCH
Check combination switch. Refer to
.
Is the check result normal?
YES
>> Replace BCM. Refer to
NO
>> Replace the combination switch (applicable parts).
Special Repair Requirement
INFOID:0000000000927429
1.
ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to
BCS-3, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description"
.
BCS
COMBINATION SWITCH OUTPUT CIRCUIT
BCS-37
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
COMBINATION SWITCH OUTPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000000924631
1.
CHECK OUTPUT 1 - 5 SYSTEM 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 SYSTEM 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 COMBINATION SWITCH
Check combination switch. Refer to
Is the check result normal?
YES
>> Replace BCM. Refer to
.
NO
>> Replace combination switch (applicable parts).
Special Repair Requirement
INFOID:0000000000927430
1.
ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to
BCS-3, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description"
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
OUTPUT 1
M65
1
M27
6
Existed
OUTPUT 2
4
7
OUTPUT 3
3
10
OUTPUT 4
2
9
OUTPUT 5
5
8
System
BCM
Ground
Continuity
Connector
Terminal
OUTPUT 1
M65
1
Not existed
OUTPUT 2
4
OUTPUT 3
3
OUTPUT 4
2
OUTPUT 5
5
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