Nissan Leaf. Manual — part 1028
PWC-30
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis Procedure
INFOID:0000000010503115
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse or fusible link blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connector M25.
2. Check voltage between BCM connector M25 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connectors.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM connector M25 and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness or connectors.
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : Diagnosis Procedure
INFOID:0000000010119947
Regarding Wiring Diagram information, refer to
.
1.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY
1. Turn power switch OFF.
2. Disconnect main power window and door lock/unlock switch connector.
Terminal No.
Signal name
Fuse and fusible link No.
57
Battery power supply
9 (10A)
70
H (40A)
BCM
Ground
Voltage
(Approx.)
Connector
Terminal
M25
57
—
Battery voltage
70
BCM
Ground
Continuity
Connector
Terminal
M25
67
—
Yes
POWER SUPPLY AND GROUND CIRCUIT
PWC-31
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
PWC
N
O
P
3. Check voltage between main power window and door lock/unlock switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and main power window and door lock/unlock switch
harness connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-72, "Removal and Installation"
NO
>> Repair or replace harness.
3.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH GROUND CIRCUIT
Check continuity between main power window and door lock/unlock switch harness connector and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness.
FRONT POWER WINDOW SWITCH (PASSENGER SIDE)
FRONT POWER WINDOW SWITCH (PASSENGER SIDE) : Diagnosis Procedure
INFOID:0000000010119948
Regarding Wiring Diagram information, refer to
.
1.
CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH POWER SUPPLY
1. Turn power switch OFF.
2. Disconnect power window and door lock/unlock switch RH connector.
3. Turn power switch ON.
4. Check voltage between power window and door lock/unlock switch RH harness connector and ground.
(+)
(-)
Condition
Voltage
(Approx.)
Main power window and door lock/unlock switch
Connector
Terminal
D35
10
Ground
Power switch
ON
Battery voltage
D36
18
OFF
BCM
Main power window and door lock/unlock switch
Continuity
Connector
Terminal
Connector
Terminal
M25
68
D35
10
Yes
69
D36
18
BCM
Ground
Continuity
Connector
Terminal
M25
68
No
69
Main power window and door lock/unlock switch
Ground
Continuity
Connector
Terminal
D35
1
Yes
PWC-32
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 2.
2.
CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH POWER SUPPLY CIRCUIT
1. Turn power switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and power window and door lock/unlock switch RH
harness connector.
4. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-72, "Removal and Installation"
NO
>> Repair or replace harness.
REAR POWER WINDOW SWITCH
REAR POWER WINDOW SWITCH : Diagnosis Procedure
INFOID:0000000010119949
Regarding Wiring Diagram information, refer to
.
1.
CHECK REAR POWER WINDOW SWITCH POWER SUPPLY
1. Turn power switch OFF.
2. Disconnect rear power window switch connector.
3. Turn power switch ON.
4. Check voltage between rear power window switch harness connector and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 2.
2.
CHECK REAR POWER WINDOW SWITCH POWER SUPPLY CIRCUIT
1. Turn power switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and rear power window switch harness connector.
(+)
(-)
Voltage
(Approx.)
Power window and door lock/unlock switch RH
Connector
Terminal
D104
8
Ground
Battery voltage
BCM
Power window and door lock/unlock switch RH
Continuity
Connector
Terminal
Connector
Terminal
M25
68
D104
8
Yes
BCM
Ground
Continuity
Connector
Terminal
M25
68
No
(+)
(-)
Voltage
(Approx.)
Rear power window switch
Connector
Terminal
LH
D202
1
Ground
Battery voltage
RH
D302
POWER SUPPLY AND GROUND CIRCUIT
PWC-33
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
PWC
N
O
P
4. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-72, "Removal and Installation"
NO
>> Repair or replace harness.
BCM
Rear power window switch
Continuity
Connector
Terminal
Connector
Terminal
M25
68
LH
D202
1
Yes
RH
D302
BCM
Ground
Continuity
Connector
Terminal
M25
68
No
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