2009 NISSAN LATIO service

EC-1042< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
System Description INFOID:0000000004499918
From the beginning of refueling, the air and vapor insi de the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
WARNING:
When conducting inspections below, be sure to observe the following:
• Put a “CAUTION: FLAMMABLE” sign in workshop.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Be sure to furnish the workshop with a CO 2
fire extinguisher.
CAUTION:
• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-pr oof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-1086, " Fuel Pressure Check " .
- Disconnect negative battery cable.
• Always replace O-ring when the fu el gauge retainer is removed.
• Do not kink or twist hose and tube when they are installed.
• Do not tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine an d check for fuel leaks at connection.
• Do not attempt to top off the fuel tank afte r the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, r esulting in fuel spray and possibly a fire.
Diagnosis Procedure INFOID:0000000004499919
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG. 1.
CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 1.9 kg (4.2 lb).
OK or NG OK >> GO TO 2.
NG >> GO TO 3. 2.
CHECK IF EVAP CANISTER SATURATED WITH WATER PBIB1387E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-1043
< SERVICE INFOMATION >
[MR TYPE 2] C
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Does water drain from
the EVAP canister?
Yes or No Yes >> GO TO 3.
No >> GO TO 6. 3.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4. 4.
CHECK DRAIN FILTER
Refer to EC-1045, " Component Inspection " .
OK or NG OK >> GO TO 5.
NG >> Replace drain filter. 5.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose. 6.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-1045, " Component Inspection " .
OK or NG OK >>
INSPECTION END
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG
WHILE REFUELING. 1.
CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 1.9 kg (4.2 lb).
OK or NG OK >> GO TO 2.
NG >> GO TO 3. 2.
CHECK IF EVAP CANISTER SATURATED WITH WATER PBIB1213E

EC-1044< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Does water drain from the EVAP canister?
Yes or No Yes >> GO TO 3.
No >> GO TO 5. 3.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4. 4.
CHECK DRAIN FILTER
Refer to EC-1045, " Component Inspection " .
OK or NG OK >> GO TO 5.
NG >> Replace drain filter. 5.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose. 6.
CHECK VENT HOSES AND VENT TUBES
Check hoses and tubes between EVAP canister and refuel ing EVAP vapor cut valve for clogging, kink, loose-
ness and improper connection.
OK or NG OK >> GO TO 7.
NG >> Repair or replace hoses and tubes. 7.
CHECK FILLER NECK TUBE
Check recirculation line for clogging, dents and cracks.
OK or NG OK >> GO TO 8.
NG >> Replace filler neck tube. 8.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-1045, " Component Inspection " .
OK or NG OK >> GO TO 9.
NG >> Replace refueling EVAP vapor cut valve with fuel tank. 9.
CHECK FUEL FILLER TUBE
Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
OK or NG OK >> GO TO 10.
NG >> Replace fuel filler tube. 10.
CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
OK or NG OK >> GO TO 11. PBIB1213E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-1045
< SERVICE INFOMATION >
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NG >> Repair or replace one-way fuel valve with fuel tank. 11.
CHECK ONE-WAY FUEL VALVE-II
1. Make sure that fuel is drained from the tank.
2. Remove fuel filler tube and hose.
3. Check one-way fuel valve for operation as follows. When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
OK or NG OK >>
INSPECTION END
NG >> Replace fuel filler tube or replace one-way fuel valve with fuel tank.
Component Inspection INFOID:0000000004499920
REFUELING EVAP VAPOR CUT VALVE With CONSULT-III
1. Remove fuel tank. Refer to FL-9 .
2. Drain fuel from the tank as follows:
a. Remove fuel feed hose located on the fuel gauge retainer.
b. Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other side to a fuel container.
c. Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-III.
3. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valv e (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
4. Check refueling EVAP vapor cut valve for being stuck to open as follows.
a. Connect vacuum pump to hose end.
b. Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one.
c. Put fuel tank upside down.
d. Apply vacuum pressure to hose end [ −13.3 kPa ( −100 mmHg, −3.94 inHg)] with fuel gauge retainer
remaining open and check that the pressure is applicable. SEF665U

EC-1046< SERVICE INFOMATION >
[MR TYPE 2]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Without CONSULT-III
1. Remove fuel tank. Refer to FL-9 .
2. Drain fuel from the tank as follows:
a. Remove fuel gauge retainer.
b. Drain fuel from the tank using a handy pump into a fuel container.
3. Check refueling EVAP vapor cut valve for being stuck to close as follows. Blow air into the refueling EVAP vapor cut valv e (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.
4. Check refueling EVAP vapor cut valve for being stuck to open as follows.
a. Connect vacuum pump to hose end.
b. Remove fuel gauge retainer with fuel gauge unit. Always replace O-ring with new one.
c. Put fuel tank upside down.
d. Apply vacuum pressure to hose end [ −13.3 kPa ( −100 mmHg, −3.94 inHg)] with fuel gauge retainer
remaining open and check that the pressure is applicable.
1. Filler tube 2. Recirculation line 3. EVAP/ORVR line
4. Vacuum/pressure handy pump 5. Fuel tank BBIA0694E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-1047
< SERVICE INFOMATION >
[MR TYPE 2] C
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DRAIN FILTER
1. Check visually for insect nests in the drain filter air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Blow air into port A and check that it flows freely out of port B.
5. Block port B.
6. Blow air into port A and check that there is no leakage.
7. If NG, replace drain filter. 1. Filler tube 2. Recirculation line 3. EVAP/ORVR line
4. Vacuum/pressure handy pump 5. Fuel tank BBIA0694E
PBIB3641E

EC-1048< SERVICE INFOMATION >
[MR TYPE 2]
POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION
Description INFOID:0000000004499921
SYSTEM DESCRIPTION
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is prov ided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is suff icient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is in sufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.
Component Inspection INFOID:0000000004499922
PCV (POSITIVE CRANKCASE VENTILATION) VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet. JMBIA0686GB
PBIB1588E
PBIB1589E

POSITIVE CRANKCASE VENTILATION
EC-1049
< SERVICE INFOMATION >
[MR TYPE 2] C
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PCV VALVE VENTILATION HOSE
1. Check hoses and hose connections for leaks.
2. Disconnect all hoses and clean with compressed air. If any hose cannot be freed of obstructions, replace. S-ET277