2009 NISSAN LATIO fuel filter

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NOTE:
Check “A/F ALPHA-B1” for approximately 1 minute because it may fluctuate. It is NG if the indication is
out of the SP value even a little.
Is the measurement value within the SP value? YES >> GO TO 17.
NO-1 >> Less than the SP value: GO TO 2.
NO-2 >> More than the SP value: GO TO 3. YES >> GO TO 4.
NO >> More than the SP value: GO TO 19. YES >> GO TO 6.
NO-1 >> More than the SP value: GO TO 6.
NO-2 >> Less than the SP value: GO TO 25. YES >> GO TO 5.
NO >> GO TO 6. Inspection " .)
Is the inspection result normal? YES >> GO TO 9.
NO-1 >> Fuel pressure is too high: Replace “fuel filter and fuel pump assembly” and then GO TO 8.
NO-2 >> Fuel pressure is too low: GO TO 7. YES >> Replace “fuel filter and fuel pump assembly” and then GO TO 8.
NO >> Repair or replace and then GO TO 8.

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NO >> GO TO 5. YES >> Replace “fuel filter and fuel pump assembly”.
NO >> Repair or replace Mass Air Flow Sensor " .
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in Service $01 with GST.
3. For specification, refer to EC-504, " Mass Air Flow Sensor " .
Is the measurement value within the specification?YES >> GO TO 7.
NO >> Check connectors for rusted terminals or loose c onnections in the mass air flow sensor circuit or
grounds. Refer to EC-148, " DTC Logic " .
YES >> GO TO 8.
NO >> Perform trouble diagnosis for FUEL INJECTOR, refer to EC-430, " Component Function Check " .
Removal and Installation " .
Keep fuel hose and all fuel injectors connected to fuel tube.
5. Disconnect all ignition coil harness connectors.
6. Prepare pans or saucers under each fuel injector.

P0172 FUEL INJECTION SYSTEM FUNCTION
EC-239
< COMPONENT DIAGNOSIS >
[HR16DE] C
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DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging.
Is the inspection result normal? YES >> Replace “fuel filter and fuel pump assembly”.
NO >> Repair or replace 6.
CHECK MASS AIR FLOW SENSOR
With CONSULT-III
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-III.
3. For specification, refer to EC-504, " Mass Air Flow Sensor " .
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in “Service $01” with GST.
3. For specification, refer to EC-504, " Mass Air Flow Sensor " .
Is the measurement value within the specification?YES >> GO TO 7.
NO >> Check connectors for rusted terminals or loose c onnections in the mass air flow sensor circuit or
grounds. Refer to EC-148, " DTC Logic " .
7.
CHECK FUNCTION OF FUEL INJECTOR
With CONSULT-III
1. Start engine.
2. Perform “POWER BALANCE” in “A CTIVE TEST” mode with CONSULT-III.
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-III
1. Let engine idle.
2. Listen to each fuel injector operating sound.
Is the inspection result normal? YES >> GO TO 8.
NO >> Perform trouble diagnosis for FUEL INJECTOR, refer to EC-430, " Component Function Check " .
8.
CHECK FUEL INJECTOR
1. Remove fuel injector assembly. Refer to EM-34, " Removal and Installation " .
Keep fuel hose and all fuel injectors connected to fuel tube.
2. Confirm that the engine is cooled down and t here are no fire hazards near the vehicle.
3. Disconnect all fuel injector harness connectors.
4. Disconnect all ignition coil harness connectors.
5. Prepare pans or saucers under each fuel injectors.
6. Crank engine for about 3 seconds. Make sure fuel does not drip from fuel injector.
Is the inspection result normal? YES >> GO TO 9.
NO >> Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one. 9.
CHECK INTERMITTENT INCIDENT
Refer to EC-120, " Diagnosis Procedure " .
>> INSPECTION END Clicking noise should be heard.
PBIB3332E

YES >> Replace spark plug(s) with standard type one(s). For
spark plug type, refer to EM-117, " Spark Plug " .
NO >> Repair or clean spark plug. Then GO TO 8. YES >> INSPECTION END
NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-117, " Spark
Plug " .
Inspection " .
Is the inspection result normal? YES >> GO TO 10.
NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets. Inspection " .
Is the inspection result normal? YES >> GO TO 12.
NO >> GO TO 11. YES >> Replace “fuel filter and fuel pump assembly”.
NO >> Repair or replace. BASIC INSPECTION : Special Repair Requirement " .
For specification, refer to EC-504, " Ignition Timing " .
Is the inspection result normal? YES >> GO TO 13.
NO >> Follow the EC-26, " BASIC INSPECTION : Special Repair Requirement " .

EC-284< COMPONENT DIAGNOSIS >
[HR16DE]
P0442 EVAP CONTROL SYSTEM
P0442 EVAP CONTROL SYSTEM
DTC Logic INFOID:0000000004780172
DTC DETECTION LOGIC
NOTE:
If DTC P0442 is displayed with DTC P0456, first pe rform the trouble diagnosis for DTC P0456. Refer to
EC-335, " DTC Logic " .
This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for l eaks in the line between the fuel tank and EVAP canister
purge volume control solenoid valve, under the following “Vacuum test” conditions.
The EVAP canister vent control valve is closed to s hut the EVAP purge line off. The EVAP canister purge vol-
ume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold
vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.
CAUTION:
• Use only a genuine NISSAN fuel filler cap as a replacemen t. If an incorrect fuel filler cap is used, the
MIL may come on. DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0442 EVAP control system
small leak detected
(negative pressure) EVAP control system has a leak, EVAP
control system does not operate prop-
erly. • Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Fuel filler cap remains open or fails to close.
• Foreign matter caught in fuel filler cap.
• Leak is in line between intake manifold and EVAP
canister purge volume control solenoid valve.
• Foreign matter caught in EVAP canister vent con- trol valve.
• EVAP canister or fuel tank leaks
• EVAP purge line (pipe and rubber tube) leaks
• EVAP purge line rubber tube bent
• Loose or disconnected rubber tube
• EVAP canister vent control valve and the circuit
• EVAP canister purge volume control solenoid
valve and the circuit
• Fuel tank temperature sensor
• O-ring of EVAP canister vent control valve is
missing or damaged
• EVAP canister is saturated with water
• EVAP control system pressure sensor
• Fuel level sensor and the circuit
• Refueling EVAP vapor cut valve
• ORVR system leaks
• Drain filter PBIB1026E

YES >> GO TO 2.
NO >> Replace with genuine NISSAN fuel filler cap. YES >> GO TO 3.
NO >> Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Then retighten until ratcheting sound is heard. YES >> GO TO 5.
NO >> GO TO 4. Component Inspection (Fuel filler cap) " .
Is the inspection result normal? YES >> GO TO 5.
NO >> Replace fuel filler cap with a genuine one. Inspection " .
Is there any leak in EVAP line? YES >> Repair or replace.
NO >> GO TO 6. Component Inspection (Drain filter) " .
Is the inspection result normal? YES >> GO TO 7.
NO >> Replace drain filter. Exploded View " .
• EVAP canister vent control valve. Refer to EC-304, " Component Inspection " .
Is the inspection result normal? YES >> GO TO 8.
NO >> Repair or replace EVAP cani ster vent control valve and O-ring.

P0455 EVAP CONTROL SYSTEM
EC-329
< COMPONENT DIAGNOSIS >
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P0455 EVAP CONTROL SYSTEM
DTC Logic INFOID:0000000004780203
DTC DETECTION LOGIC This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and
EVAP canister purge volume control solenoid valve.
CAUTION:
• Use only a genuine NISSAN fuel filler cap as a replacemen t. If an incorrect fuel filler cap is used, the
MIL may come on.
• If the fuel filler cap is not tigh tened properly, the MIL may come on.
• Use only a genuine NISSAN rubber tube as a replacement.
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0455 EVAP control system
gross leak detected EVAP control system has a very large leak such
as fuel filler cap fell off, EVAP control system
does not operate properly. • Fuel filler cap remains open or fails to
close.
• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Foreign matter caught in fuel filler cap.
• Leak is in line between intake manifold
and EVAP canister purge volume control
solenoid valve.
• Foreign matter caught in EVAP canister
vent control valve.
• EVAP canister or fuel tank leaks
• EVAP purge line (pipe and rubber tube)
leaks
• EVAP purge line rubber tube bent.
• Loose or disconnected rubber tube
• EVAP canister vent control valve and the circuit
• EVAP canister purge volume control so-
lenoid valve and the circuit
• Fuel tank temperature sensor
• O-ring of EVAP canister vent control
valve is missing or damaged.
• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leaks
• Drain filter PBIB1026E

P0455 EVAP CONTROL SYSTEM
EC-331
< COMPONENT DIAGNOSIS >
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1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
Is the inspection result normal? YES >> GO TO 2.
NO >> Replace with genuine NISSAN fuel filler cap. 2.
CHECK FUEL FILLER CAP INSTALLATION
Check that the cap is tightened properly by rotating the cap clockwise.
Is the inspection result normal? YES >> GO TO 3.
NO >> Open fuel filler cap, then clean cap and fuel fi ller neck threads using air blower. Then retighten
until ratcheting sound is heard. 3.
CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4. 4.
CHECK FUEL TANK VACUUM RELIEF VALVE
Refer to EC-333, " Component Inspection (Fuel filler cap) " .
Is the inspection result normal? YES >> GO TO 5.
NO >> Replace fuel filler cap with a genuine one. 5.
CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or
disconnection.
Refer to EC-74, " System Description " .
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or reconnect the hose. 6.
CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
>> GO TO 7. 7.
CHECK DRAIN FILTER
Refer to EC-334, " Component Inspection (Drain filter) " .
Is the inspection result normal? YES >> GO TO 8.
NO >> Replace drain filter. 8.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
• EVAP canister vent control valve is installed properly.
Refer to EC-502, " Exploded View " .
• EVAP canister vent control valve. Refer to EC-304, " Component Inspection " . SEF915U