Nissan Qashqai J11. Manual — part 226
ECH-202
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
P025A FUEL PUMP
P025A FUEL PUMP
DTC Logic
INFOID:0000000010379133
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
Turn ignition switch OFF and wait at least 12 minutes.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 5 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECH-202, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010379134
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E4. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK FUEL PUMP RELAY CIRCUIT-1
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 3.
3.
CHECK FUEL PUMP RELAY CIRCUIT-2
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P025A
FUEL PUMP MODULE A
(Fuel pump module control
circuit/open)
• ECM detects the fuel pump relay control circuit
is open.
• ECM detects the fuel pump relay control circuit
is short to ground.
• ECM detects the fuel pump relay control circuit
is short to power.
• Harness or connectors
(The fuel pump relay control circuit is
open or shorted.)
• Fuel pump relay
ECM
Voltage
+
–
Connector
Terminal
Connector
Terminal
F18
115
E9
29
Battery voltage
P025A FUEL PUMP
ECH-203
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
C
D
E
F
G
H
I
J
K
L
M
A
ECH
N
P
O
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK FUSE
1.
Disconnect 20A fuse (No. 61) from IPDM E/R.
2.
Check the fuse.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace the fuse.
5.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
.
>> INSPECTION END
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F18
115
F90
106
Existed
ECH-204
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
P0300, P0301, P0302, P0303, P0304, P0313 MISFIRE
P0300, P0301, P0302, P0303, P0304, P0313 MISFIRE
DTC Logic
INFOID:0000000010379094
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
Turn ignition switch OFF and wait at least 12 minutes.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-I
1.
Start engine and let it idle for about 10 minutes.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECH-204, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010379095
1.
CHECK IGNITION COIL CIRCUIT
1.
Turn ignition switch OFF, wait at least 20 minutes and then turn it ON.
2.
Check ignition coil circuit. Refer to
ECH-215, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK FUEL PRESSURE
1.
Install all removed parts.
2.
Release fuel pressure to zero. Refer to
3.
Install fuel pressure gauge and check fuel pressure. Refer to
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0300
MULTI CYL MISFIRE [P0300]
(Random/multiple cylinder misfire
detected)
Multiple cylinder misfire.
• Improper spark plug
• Ignition coil
• Fuel pump
• Fuel injector
• The fuel injector circuit is open or shorted
P0301
CYL 1 MISFIRE [P0301]
(Cylinder 1 misfire detected)
No. 1 cylinder misfires.
P0302
CYL 2 MISFIRE [P0302]
(Cylinder 2 misfire detected)
No. 2 cylinder misfires.
P0303
CYL 3 MISFIRE [P0303]
(Cylinder 3 misfire detected)
No. 3 cylinder misfires.
P0304
CYL 4 MISFIRE [P0304]
(Cylinder 4 misfire detected)
No. 4 cylinder misfires.
P0313
MISFIRE DETECTED
(Misfire Detected with Low Fuel)
When misfire detected in cylinders
more than one with low fuel level
in tank.
P0300, P0301, P0302, P0303, P0304, P0313 MISFIRE
ECH-205
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
C
D
E
F
G
H
I
J
K
L
M
A
ECH
N
P
O
Is the inspection result normal?
YES
>> Replace “fuel filter and fuel pump assembly (main)”.
NO
>> Repair or replace.
4.
CHECK FUEL PUMP CIRCUIT
Check fuel pump circuit.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK FUEL INJECTOR CIRCUIT
Check fuel injector circuit. Refer to
ECH-188, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM section.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
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