2011 NISSAN LATIO fuel pump

P0456 EVAP CONTROL SYSTEMEC-343
< COMPONENT DIAGNOSIS > [HR16DE]
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Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 11.
YES-2 >> Without CONSULT-III: GO TO 12.
NO >> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehi cle frame for clogging or poor connection
>> Repair hose or replace EVAP canister. Refer to FL-15, "
Removal and Installation (HR16DE)".
11 .CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose to EVAP canister purge volu me control solenoid valve at EVAP service port.
2. Start engine.
3. Perform “PURG VOL CONT/V ” in “ACTIVE TEST” mode.
4. Touch “Qu” on CONSULT-III screen to increase “PURG VOL CONT/V” opening to 100%.
5. Check vacuum hose for vacuum.
Is the inspection result normal?
YES >> GO TO 14.
NO >> GO TO 13.
12.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose to EVAP canister purge volu me control solenoid valve at EVAP service port.
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
Is the inspection result normal?
YES >> GO TO 15.
NO >> GO TO 13.
13.CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to EC-79, "
System Description".
Is the inspection result normal?
YES >> GO TO 14.
NO >> Repair or reconnect the hose.
14.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-297, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 15.
NO >> Replace EVAP canister purge volume control solenoid valve. Refer to EM-27, "
Exploded View".
15.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to EC-248, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 16.
NO >> Replace fuel level sensor unit, fuel filter and fuel pump assembly. Refer to FL-6, "
Removal and
Installation".
Vacuum should exist.
Vacuum should exist.
Revision: May 2010
2011 Versa

EC-344
< COMPONENT DIAGNOSIS >[HR16DE]
P0456 EVAP CONTROL SYSTEM
16.CHECK EVAP CONTROL SYS
TEM PRESSURE SENSOR
Refer to EC-318, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 17.
NO >> Replace EVAP control system pressure sensor. Refer to FL-15, "
Exploded View".
17.CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to EC-79, "
System Description".
Is the inspection result normal?
YES >> GO TO 18.
NO >> Repair or reconnect the hose.
18.CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 19.
19.CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper con-
nection. For location, refer to EC-453, "
Description".
Is the inspection result normal?
YES >> GO TO 20.
NO >> Repair or replace hoses and tubes.
20.CHECK RECIRCULATION LINE
Check recirculation line between fuel filler tube and fuel tank for clogging, kink, cracks, looseness and
improper connection.
Is the inspection result normal?
YES >> GO TO 21.
NO >> Repair or replace hose, tube or fuel filler tube.
21.CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-456, "
Component Inspection (Refueli ng EVAP vapor cut valve)".
Is the inspection result normal?
YES >> GO TO 22.
NO >> Replace refueling EVAP vapor cut valve with fuel tank.
22.CHECK FUEL LEVEL SENSOR
Refer to DI-17, "
Fuel Level Sensor Signal Inspection".
Is the inspection result normal?
YES >> GO TO 23.
NO >> Replace fuel level sensor unit, fuel filter and fuel pump assembly. Refer to FL-6, "
Removal and
Installation".
23.CHECK INTERMITTENT INCIDENT
Refer to EC-122, "
Diagnosis Procedure".
>> INSPECTION END
Component Inspection (Fuel filler cap)INFOID:0000000006141023
1.CHECK FUEL FILLER CAP
1. Turn ignition switch OFF.
2. Remove fuel filler cap.
Revision: May 2010 2011 Versa

EC-348
< COMPONENT DIAGNOSIS >[HR16DE]
P0461 FUEL LEVEL SENSOR
2. Release fuel pressure from fuel line, refer to
EC-499, "Inspection".
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.
6. Select “FUEL LEVEL SE” in “DAT A MONITOR” mode with CONSULT-III.
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-III.
9. Touch “ON” and drain fuel approximately 30 (7-7/8 US gal, 6-5/8 Imp gal) and stop it.
10. Check “FUEL LEVEL SE” output voltage and note it.
11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
12. Check “FUEL LEVEL SE” output voltage and note it.
13. Confirm whether the voltage changes more than 0.03 V during step 7 to 10 and 10 to 12.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-348, "
Diagnosis Procedure".
3.PERFORM COMPONENT FUNCTION CHECK
Without CONSULT-III
NOTE:
Start from step 8, if it is possibl e to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8
Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line. Refer to EC-499, "
Inspection".
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch ON.
6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
9. Confirm that the fuel gauge indication varies.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-348, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006141015
1.CHECK COMBINATION METER FUNCTION
Refer to DI-14, "
Trouble Diagnosis".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to DI-14, "
Trouble Diagnosis"
2.CHECK INTERMITTENT INCIDENT
Refer to EC-122, "
Diagnosis Procedure".
>> INSPECTION END
Revision: May 2010 2011 Versa

FUEL PUMPEC-437
< COMPONENT DIAGNOSIS > [HR16DE]
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FUEL PUMP
DescriptionINFOID:0000000005930124
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to
operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The EC M stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly dr ive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
Component Function CheckINFOID:0000000005930125
1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose (1) with two fingers.
Is the inspection result normal?
YES >> INSPECTION END
NO >> EC-438, "
Diagnosis Procedure".
Sensor Input signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
ALBIA0276ZZ
Revision: May 2010 2011 Versa

EC-438
< COMPONENT DIAGNOSIS >[HR16DE]
FUEL PUMP
Wiring Diagram
INFOID:0000000005930126
Diagnosis ProcedureINFOID:0000000005930127
1.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
AABWA0317GB
Revision: May 2010 2011 Versa

FUEL PUMPEC-439
< COMPONENT DIAGNOSIS > [HR16DE]
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4. Check the voltage between ECM harness connector and
ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IDPDM E/R harness connector E46.
3. Turn ignition switch ON.
4. Check the voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 10.
3.DETECT MALFUNCTIONING PART
Check the following.
• Harness or connectors E8, F8.
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness connector.
4. Turn ignition switch ON.
5. Check the voltage between “fuel level sensor unit and fuel pump” harness connector and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 5.
5.CHECK FUSE
1. Turn ignition switch OFF.
2. Disconnect 15 A fuse (No. 48) from IPDM E/R.
3. Check 15 A fuse.
Is the inspection result normal?
YES >> GO TO 6.
ECM GroundVoltage
Connector Terminal
F10 23 Ground Battery voltage
PBIA9573J
IPDM E/R
GroundVoltage
Connector Terminal
E46 47 Ground Battery voltage
PBIB3319E
Fuel level sensor unit
and fuel pump Ground Voltage
Connector Terminal
B100 1 Ground Battery voltage should exist 1 second
after ignition switch is turn ON.
PBIB0795E
Revision: May 2010
2011 Versa

EC-440
< COMPONENT DIAGNOSIS >[HR16DE]
FUEL PUMP
NO >> Replace15 A fuse.
6.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E45.
2. Check the continuity between IPDM E/R harness connector and “fuel level sensor unit and fuel pump”
harness connector.
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E7, M69
• Harness connectors M12, B101
• Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to power in harness or connectors.
8.CHECK FUEL PUMP GROUND CIRCUIT
1. Check the continuity between “fuel le vel sensor unit and fuel pump” and ground.
2. Also heck harness for short to power.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair open circuit or short to power in harness or connectors.
9.CHECK FUEL PUMP
Refer to EC-440, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 10.
NO >> Replace “fuel level sensor unit, fuel filter and fuel pump”. Refer to FL-6, "
Removal and Installa-
tion".
10.CHECK INTERMITTENT INCIDENT
Refer to EC-122, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PG-28, "Removal and Installation of IPDM E/R".
NO >> Repair or replace harness or connectors.
Component InspectionINFOID:0000000005930128
1.CHECK FUEL PUMP
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor uni t and fuel pump” harness connector.
IPDM E/RFuel level sensor unit and
fuel pump Continuity
Connector Terminal Connector Terminal
E45 36 B100 1 Existed
Fuel level sensor unit and fuel pump Ground Continuity
Connector Terminal
B100 3 Ground Existed
Revision: May 2010 2011 Versa

FUEL PUMPEC-441
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3. Check resistance between “fuel level sensor unit and fuel pump”
terminals as per the following.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace “fuel level sensor unit, fuel filter and fuel pump”. Refer to FL-6, "
Removal and Installation".
Terminals Resistance
1 and 3 0.2 - 5.0 Ω [at 25°C (77 °F)]
SEC918C
Revision: May 2010 2011 Versa