Nissan Quest E52. Instruction — part 309
DAS-78
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
BSW SWITCH CIRCUIT
BSW SWITCH CIRCUIT
Component Function Check
INFOID:0000000009940768
1.
CHECK BSW SWITCH INPUT SIGNAL
1.
Turn the ignition switch ON.
2.
Select the DATA MONITOR item “WARN SYS SW” of “BSW” with CONSULT.
3.
With operating the BSW switch, check the monitor status.
Is the inspection result normal?
YES
>> BSW switch circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009940769
1.
CHECK BSW SWITCH SIGNAL INPUT
1.
Turn the ignition switch ON.
2.
With operating the BSW switch, check voltage between BSW control module harness connector and
ground.
Is the inspection result normal?
YES
>> Replace the BSW control module. Refer to
DAS-84, "Removal and Installation"
.
NO
>> GO TO 2.
2.
CHECK BSW SWITCH
1.
Turn ignition switch OFF.
2.
Remove BSW switch.
3.
Check BSW switch. Refer to
DAS-88, "Removal and Installation"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace the BSW switch. Refer to
DAS-88, "Removal and Installation"
3.
CHECK BSW SWITCH GROUND CIRCUIT
Check continuity between BSW switch harness connector and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK BSW SWITCH SIGNAL INPUT CIRCUIT FOR OPEN
1.
Disconnect the BSW control module connector.
Monitor item
Condition
Monitor status
WARN SYS
SW
BSW switch is pressed
On
BSW switch is not pressed
OFF
Terminals
Condition
Voltage
(Approx.)
(+)
(
−
)
BSW control module
Ground
BSW switch
Connector
Terminal
M61
1
Pressed
0 V
Released
12 V
BSW switch
Ground
Continuity
Connector
Terminal
M60
2
Existed
DAS
BSW SWITCH CIRCUIT
DAS-79
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
2.
Check continuity between the BSW control module harness connector and BSW switch harness connec-
tor.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair the harnesses or connectors.
5.
CHECK BSW SWITCH SIGNAL INPUT CIRCUIT FOR SHORT
Check continuity between the BSW control module harness connector and ground.
Is the inspection result normal?
YES
>> Replace the BSW control module. Refer to
DAS-84, "Removal and Installation"
NO
>> Repair the harnesses or connectors.
Component Inspection
INFOID:0000000009940770
1.
CHECK BSW SWITCH
Check continuity of BSW switch.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace BSW switch.
BSW control module
BSW switch
Continuity
Connector
Terminal
Connector
Terminal
M61
1
M60
1
Existed
BSW control module
Ground
Continuity
Connector
Terminal
M61
1
Not existed
Terminal
Condition
Continuity
1
2
When BSW switch is pressed
Existed
When BSW switch is released
Not existed
DAS-80
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
BSW ON INDICATOR CIRCUIT
BSW ON INDICATOR CIRCUIT
Diagnosis Procedure
INFOID:0000000009940771
1.
CHECK BSW ON INDICATOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BSW switch connector.
3.
Turn ignition switch ON.
4.
Check voltage between BSW switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the BSW ON indicator power supply circuit.
2.
CHECK BSW ON INDICATOR SIGNAL FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect the BSW control module harness connector.
3.
Check continuity between the BSW control module harness connector and BSW switch harness connec-
tor.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harnesses or connectors.
3.
CHECK BSW ON INDICATOR SIGNAL CIRCUIT FOR SHORT
Check continuity between the BSW control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair the harnesses or connectors.
4.
CHECK BSW ON INDICATOR
Check the BSW ON indicator. Refer to
DAS-80, "Component Inspection"
Is the inspection result normal?
YES
>> Replace the BSW control module. Refer to
DAS-84, "Removal and Installation"
.
NO
>> Replace BSW switch.
DAS-88, "Removal and Installation"
.
Component Inspection
INFOID:0000000009940772
1.
CHECK BSW ON INDICATOR
Apply battery voltage to BSW switch terminals 5 and 6, and then check if the BSW ON indicator illuminates.
Terminals
Voltage
(Approx.)
(+)
(
−
)
BSW switch
Ground
Connector
Terminal
M60
5
Battery voltage
BSW control module
BSW switch
Continuity
Connector
Terminal
Connector
Terminal
M61
4
M60
6
Existed
BSW control module
Ground
Continuity
Connector
Terminal
M61
4
Not existed
DAS
BSW ON INDICATOR CIRCUIT
DAS-81
< DTC/CIRCUIT DIAGNOSIS >
[BSW]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the BSW switch. Refer to
DAS-88, "Removal and Installation"
Terminals
Condition
BSW ON indica-
tor
(+)
(-)
5
6
When the battery voltage is applied
On
When the battery voltage is not applied
Off
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