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![NISSAN LATIO 2009 Service Repair Manual DTC P0456 EVAP CONTROL SYSTEM
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DTC P0456 EVAP CONTROL SYSTEM
On Board Diagnosis Logic INFOID:0000000004537345
This diagnosis de NISSAN LATIO 2009 Service Repair Manual DTC P0456 EVAP CONTROL SYSTEM
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DTC P0456 EVAP CONTROL SYSTEM
On Board Diagnosis Logic INFOID:0000000004537345
This diagnosis de](/manual-img/5/57359/w960_57359-2208.png)
DTC P0456 EVAP CONTROL SYSTEM
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DTC P0456 EVAP CONTROL SYSTEM
On Board Diagnosis Logic INFOID:0000000004537345
This diagnosis detects very small leaks in the EVAP line between fuel tank and EVAP canister purge volume
control solenoid valve, using the intake manifold vac uum in the same way as conventional EVAP small leak
diagnosis.
If ECM judges a leak which corresponds to a very small leak, the very small leak P0456 will be detected.
If ECM judges a leak equivalent to a small leak, EVAP small leak P0442 will be detected.
If ECM judges there are no leaks, the diagnosis will be OK.
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 No. Trouble diagnosis name DTC detecting condition Possible cause
P0456
0456 Evaporative emission
control system very
small leak (negative
pressure check) • EVAP system has a very small leak.
• EVAP 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 miss- ing or damaged
• EVAP canister is saturated with water
• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leaks
• Fuel level sensor and the circuit
• Foreign matter caught in EVAP canister purge vol-
ume control solenoid valve PBIB1026E
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![NISSAN LATIO 2009 Service Repair Manual EC-854< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0456 EVAP CONTROL SYSTEM
DTC Confirmation Procedure INFOID:0000000004537346
NOTE:
• If DTC P0456 is displayed with P0442, firs t perform trouble diagnos NISSAN LATIO 2009 Service Repair Manual EC-854< SERVICE INFOMATION >
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DTC P0456 EVAP CONTROL SYSTEM
DTC Confirmation Procedure INFOID:0000000004537346
NOTE:
• If DTC P0456 is displayed with P0442, firs t perform trouble diagnos](/manual-img/5/57359/w960_57359-2209.png)
EC-854< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0456 EVAP CONTROL SYSTEM
DTC Confirmation Procedure INFOID:0000000004537346
NOTE:
• If DTC P0456 is displayed with P0442, firs t perform trouble diagnosis for DTC P0456.
• After repair, make sure that the hoses and clips are installed properly.
• If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
• Open engine hood before conducting following procedure.
• If any of following conditions are met just befo re the DTC confirmation procedure, leave the vehicle
for more than 1 hour.
- Fuel filler cap is removed.
- Refilled or drained the fuel.
- EVAP component parts is/are removed.
• Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Make sure the following conditions are met.
FUEL LEVEL SE: 0.25 - 1.4V
COOLAN TEMP/S: 0 - 32 °C (32 - 90 °F)
FUEL T/TMP SE: 0 - 35 °C (32 - 95 °F)
INT/A TEMP SE: More than 0 °C (32 °F)
If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle) or refilling/draining
fuel until the output voltage condition of the “FUE L LEVEL SE” meets within the range above and leave
the vehicle for more than 1 hour. Then start from step 1).
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “EVAP V/S LEAK P0456” of “EVAPORATI VE SYSTEM” in “DTC WORK SUPPORT” mode with
CONSULT-III.
Follow the instruction displayed.
6. Make sure that “OK” is displayed.
If “NG” is displayed, refer to EC-855, " Diagnosis Procedure " .
NOTE:
• If the engine speed cannot be maintained with in the range displayed on CONSULT-III screen, go
to EC-566, " Basic Inspection " .
• Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid
valve properly.
Overall Function Check INFOID:0000000004537347
WITH GST
Use this procedure to check the overall function of the EV AP very small leak function. During this check, a 1st
trip DTC might not be confirmed.
CAUTION:
• Never use compressed air, doing so may damage the EVAP system.
• Do not start engine.
• Do not exceeded 4.12 kPa (0.042 kg/cm 2
, 0.6 psi).
1. Attach the EVAP service port adapter securely to the EVAP ser- vice port (2).
- EVAP canister purge volume control solenoid valve (1)
- : Vehicle front BBIA0703E
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![NISSAN LATIO 2009 Service Repair Manual DTC P0456 EVAP CONTROL SYSTEM
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2. Set the pressure pump and a hose.
3. Also set the pressure pump with pressure gauge t NISSAN LATIO 2009 Service Repair Manual DTC P0456 EVAP CONTROL SYSTEM
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2. Set the pressure pump and a hose.
3. Also set the pressure pump with pressure gauge t](/manual-img/5/57359/w960_57359-2210.png)
DTC P0456 EVAP CONTROL SYSTEM
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2. Set the pressure pump and a hose.
3. Also set the pressure pump with pressure gauge to the EVAP service port adapter.
4. Turn ignition switch ON.
5. Connect GST and select Service $08.
6. Using Service $08 control the EVAP canister vent control valve
(close).
7. Apply pressure and make sure the following conditions are sat- isfied.
Pressure to be applied: 2.7 kPa (20 mmHg, 0.79 inHg)
Time to be waited after the pressure drawn in to the EVAP
system and the pressure to be dropped: 60 seconds and
the pressure should not be dropped more than 0.4 kPa (3 mmHg, 0.12 inHg).
If NG, go to EC-855, " Diagnosis Procedure " .
If OK, go to next step.
8. Disconnect GST.
9. Start engine and warm it up to normal operating temperature.
10. Turn ignition switch OFF and wait at least 10 seconds.
11. Restart engine and let it idle for 90 seconds.
12. Keep engine speed at 2,000 rpm for 30 seconds.
13. Turn ignition switch OFF. NOTE:
For more information, refe r to GST Instruction Manual.
Diagnosis Procedure INFOID:00000000045373481.
CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
OK or NG OK >> GO TO 2.
NG >> 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.
OK or NG OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. 2. Retighten until reteaching sound is heard. 3.
CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
OK or NG OK >> GO TO 5.
NG >> GO TO 4. 4.
CHECK FUEL TANK VACUUM RELIEF VALVE
Refer to EC-529, " Component Inspection " .
OK or NG OK >> GO TO 5.
NG >> Replace fuel filler cap with a genuine one. SEF462UI
SEF915U
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![NISSAN LATIO 2009 Service Repair Manual EC-856< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0456 EVAP CONTROL SYSTEM 5.
INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service NISSAN LATIO 2009 Service Repair Manual EC-856< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0456 EVAP CONTROL SYSTEM 5.
INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service](/manual-img/5/57359/w960_57359-2211.png)
EC-856< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0456 EVAP CONTROL SYSTEM 5.
INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service port securely. For the location of EVAP
service port (2), refer to EC-527, " Description " .
• EVAP canister purge volume control solenoid valve (1)
• : Vehicle front NOTE:
Improper installation of the EV AP service port adapter to the
EVAP service port may cause leaking.
With CONSULT-III>>GO TO 6.
Without CONSULT-III>>GO TO 7. 6.
CHECK FOR EVAP LEAK
With CONSULT-III
1. Turn ignition switch ON.
2. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-III.
3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph.
CAUTION:
• Never use compressed air or a high pressure pump.
• Do not exceed 4.12 kPa (0.042 kg/cm 2
, 0.6 psi) of pressure in the system.
4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.
Refer to EC-527, " Description " .
OK or NG OK >> GO TO 8.
NG >> Repair or replace. 7.
CHECK FOR EVAP LEAK
Without CONSULT-III
1. Turn ignition switch OFF. BBIA0703E
SEF916U
SEF200U
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2. Apply 12 volts DC to EVAP canister vent control valve (3). The
valve will close. ( NISSAN LATIO 2009 Service Repair Manual DTC P0456 EVAP CONTROL SYSTEM
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2. Apply 12 volts DC to EVAP canister vent control valve (3). The
valve will close. (](/manual-img/5/57359/w960_57359-2212.png)
DTC P0456 EVAP CONTROL SYSTEM
EC-857
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2. Apply 12 volts DC to EVAP canister vent control valve (3). The
valve will close. (Continue to apply 12 volts until the end of test.)
- EVAP control system pressure sensor (1)
- EVAP canister (2)
3. Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove pump and EVAP service port adapter.
CAUTION:
• Never use compressed air or a high pressure pump.
• Do not exceed 4.12 kPa (0.042 kg/cm 2
, 0.6 psi) of pressure in the system.
4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.
Refer to EC-527, " Description " .
OK or NG OK >> GO TO 8.
NG >> Repair or replace. 8.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
• EVAP canister vent control valve is installed properly.
Refer to EC-531, " Removal and Installation " .
• EVAP canister vent control valve. Refer to EC-821, " Component Inspection " .
OK or NG OK >> GO TO 9.
NG >> Repair or replace EVAP canister vent control valve and O-ring. 9.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Does water drain from the EVAP canister?
Yes or No Yes >> GO TO 10.
No (With CONSULT-III)>>GO TO 12.
No (Without CONSULT-III)>>GO TO 13. 10.
CHECK EVAP CANISTER
Weigh the EVAP canister with the EV AP canister vent control valve and EVAP control system pressure sensor
attached. BBIA0693E
SEF200U
PBIB1213E
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OK (With CONSULT-III)>>GO TO 12.
OK (Without CONSULT-III)>>GO TO 13.
NG >> GO TO 11. OK >> GO TO 15.
NG >> GO TO 14. OK >> GO TO 16.
NG >> GO TO 14. Vacuum Hose Drawing " .
OK or NG OK >> GO TO 15.
NG >> Repair or reconnect the hose. Component Inspection " .
OK or NG OK >> GO TO 16.
NG >> Replace EVAP canister purge volume control solenoid valve. Component Inspection " .
OK or NG OK >> GO TO 17.
NG >> Replace fuel level sensor unit. Vacuum should exist.
Vacuum should exist.
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EC
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OK or NG OK >> GO TO 18.
NG >> Replace EVAP control system pressure sensor. Description " .
OK or NG OK >> GO TO 19.
NG >> Repair or reconnect the hose. .
OK or NG OK >> GO TO 21.
NG >> Repair or replace hoses and tubes. OK >> GO TO 22.
NG >> Repair or replace hose, tube or filler neck tube. Component Inspection " .
OK or NG OK >> GO TO 23.
NG >> Replace refueling EVAP vapor cut valve with fuel tank. .
OK or NG OK >> GO TO 24.
NG >> Replace fuel level sensor unit. .
>> INSPECTION END
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![NISSAN LATIO 2009 Service Repair Manual EC-860< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0460 FUEL LEVEL SENSOR
DTC P0460 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537349
The fuel level sensor (3) is mounted in the fuel level s NISSAN LATIO 2009 Service Repair Manual EC-860< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0460 FUEL LEVEL SENSOR
DTC P0460 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537349
The fuel level sensor (3) is mounted in the fuel level s](/manual-img/5/57359/w960_57359-2215.png)
EC-860< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0460 FUEL LEVEL SENSOR
DTC P0460 FUEL LEVEL SENSOR
Component Description INFOID:0000000004537349
The fuel level sensor (3) is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the combination meter. The combination meter sends the fuel level
sensor signal to the ECM through CAN communication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
• Fuel level sensor unit and fuel pump (1)
• Fuel pressure regulator (2)
• Fuel tank temperature sensor (4)
On Board Diagn osis Logic INFOID:0000000004537350
NOTE:
• If DTC P0460 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-633 .
• If DTC P0460 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-635 .
• When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the
fuel level sensor does not change. If ECM senses sloshi ng signal from the sensor, fuel level sensor malfunc-
tion is detected.
DTC Confirmation Procedure INFOID:0000000004537351
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
1. Start engine and wait maximum of 2 consecutive minutes.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-860, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:00000000045373521.
CHECK FUEL GAUGE OPERATION
Refer to DI-10, " Self-Diagnosis Mode of Combination Meter " .
OK or NG OK >> GO TO 2.
NG >> Follow the instruction of DI-10, " Self-Diagnosis Mode of Combination Meter " .
2.
CHECK FUEL LEVEL SENSOR AND CIRCUIT
Refer to DI-16, " Fuel Level Sensor Signal Inspection " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace malfunctioning parts. BBIA0704E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0460
0460 Fuel level sensor circuit
noise Even though the vehicle is parked, a signal be-
ing varied is sent from the fuel level sensor to
ECM. • Harness or connectors
(CAN communication line is open or
shorted)
• Harness or connectors
(Fuel level sensor circuit is open or short-
ed)
• Combination meter
• Fuel level sensor