Nissan Qashqai J11. Manual — part 558
EC9-388
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
LOW PRESSURE FUEL PUMP
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK FUEL PUMP CONTROL CIRCUIT
1.
Disconnect fuel level sensor unit and fuel pump (main) harness connector.
2.
Check the continuity between FPCM harness connector and fuel level sensor unit and fuel pump (main)
harness connector.
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK LOW PRESSURE FUEL PUMP
EC9-388, "Component Inspection (Low Pressure Fuel Pump)"
.
Is the inspection result normal?
YES
>> Replace FPCM.
NO
>> Replace low pressure fuel pump.
Component Inspection (Low Pressure Fuel Pump)
INFOID:0000000010500946
1.
CHECK FUEL PRESSURE REGULATOR
1.
Turn ignition switch OFF.
2.
Check low fuel pressure.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK LOW PRESSURE FUEL PUMP
1.
Turn ignition switch OFF.
2.
Disconnect fuel level sensor unit and fuel pump (main).
3.
Check resistance between fuel level sensor unit and fuel pump (main) terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace fuel level sensor unit and fuel pump (main).
+
−
Continuity
FPCM
Fuel level sensor unit and fuel
pump (main)
Connector
Terminal
Connector
Terminal
B75
3
B94
1
Existed
4
4
5
3
6
2
+
−
Continuity
Fuel level sensor unit and
fuel pump (main)
Terminals
2
3
Existed
4
BRAKE SWITCH
EC9-389
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
BRAKE SWITCH
Component Function Check
INFOID:0000000010309410
1.
CHECK BRAKE SWITCH FUNCTION
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
EC9-389, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010309411
1.
CHECK BRAKE SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the voltage between stop lamp switch harness connector and ground.
M/T models
CVT models
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform the trouble diagnosis for power supply circuit.
2.
CHECK BRAKE SWITCH INPUT SIGNAL CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between stop lamp switch harness connector and ECM harness connector.
M/T models
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E58
17
25
Brake pedal
Slightly de-
pressed
0 V
Fully released
Battery voltage
+
−
Voltage
Stop lamp switch
Connector
Terminal
E50
3
Ground
Battery voltage
+
−
Voltage
Brake pedal position switch
Connector
Terminal
E30
1
Ground
Battery voltage
+
−
Continuity
Stop lamp switch
ECM
Connector
Terminal
Connector
Terminal
E50
4
E58
17
Existed
EC9-390
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
BRAKE SWITCH
CVT models
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK BRAKE SWITCH
Check the brake switch. Refer to
EC9-390, "Component Inspection (Stop Lamp Switch)"
390, "Component Inspection (Brake Pedal Position Switch)"
(CVT models).
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Replace stop lamp switch.
Component Inspection (Stop Lamp Switch)
INFOID:0000000010309412
1.
CHECK STOP LAMP SWITCH-1
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH-2
1.
Adjust stop lamp switch installation. Refer to
BR-8, "Inspection and Adjustment"
(RHD models).
2.
Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace stop lamp switch.
Component Inspection (Brake Pedal Position Switch)
INFOID:0000000010929195
1.
CHECK BRAKE PEDAL POSITION SWITCH-1
1.
Turn ignition switch OFF.
+
−
Continuity
Brake pedal position switch
ECM
Connector
Terminal
Connector
Terminal
E30
2
E58
17
Existed
Stop lamp switch
Condition
Continuity
+
-
Terminals
3
4
Brake pedal
Fully released
Existed
Slightly de-
pressed
Not existed
Stop lamp switch
Condition
Continuity
+
-
Terminals
3
4
Brake pedal
Fully released
Existed
Slightly de-
pressed
Not existed
BRAKE SWITCH
EC9-391
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
2.
Disconnect brake pedal position switch harness connector.
3.
Check the continuity between brake pedal position switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK BRAKE PEDAL POSITION SWITCH-2
1.
Adjust brake pedal position switch installation. Refer to
BR-8, "Inspection and Adjustment"
BR-52, "Inspection and Adjustment"
(RHD models).
2.
Check the continuity between brake pedal position switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace brake pedal position switch.
Brake pedal position switch
Condition
Continuity
+
-
Terminals
1
2
Brake pedal
Fully released
Existed
Slightly de-
pressed
Not existed
Brake pedal position switch
Condition
Continuity
+
-
Terminals
1
2
Brake pedal
Fully released
Existed
Slightly de-
pressed
Not existed
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