Nissan Frontier D40. Manual - part 392

P0456 EVAP CONTROL SYSTEM

EC-259

< COMPONENT DIAGNOSIS >

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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.
NOTE:
Improper installation of the EVAP 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.
• Never 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-457, "How to Detect Fuel Vapor Leakage"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

7.

CHECK FOR EVAP LEAK

Without CONSULT-III

1.

Turn ignition switch OFF.

BBIA0620E

SEF916U

SEF200U

EC-260

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P0456 EVAP CONTROL SYSTEM

2.

Apply 12 volts DC to EVAP canister vent control valve (1). The
valve will close. (Continue to apply 12 volts until the end of test.)
- EVAP control system pressure sensor (2)
- Drain filter (3)
- EVAP canister (4)
- 

 : Vehicle front

3.

Pressurize the EVAP line using pressure pump with 1.3 to 2.7
kPa (0.013 to 0.028 kg/cm

2

, 0.19 to 0.39 psi), then remove

pump and EVAP service port adapter.

CAUTION:

• Never use compressed air or a high pressure pump.
• Never 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-457, "How to Detect Fuel Vapor Leakage"

.

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-459, "Removal and Installation"

• EVAP canister vent control valve.

Refer to 

EC-389, "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 IS SATURATED WITH WATER

1.

Remove EVAP canister with EVAP canister vent control 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 EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.0 kg (4.4 lb).
OK or NG

OK (With CONSULT-III)>>GO TO 12.
OK (Without CONSULT-III)>>GO TO 13.

ALBIA0514ZZ

SEF200U

BBIA0558E

P0456 EVAP CONTROL SYSTEM

EC-261

< COMPONENT DIAGNOSIS >

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NG

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

12.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1.

Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control sole-
noid valve from EVAP canister purge volume control solenoid valve.

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 when revving engine up to 2,000 rpm.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 14.

13.

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 connected to EVAP service port and EVAP canister purge volume control sole-
noid valve from EVAP canister purge volume control solenoid valve.

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.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 14.

14.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to 

EC-42, "Description"

.

OK or NG

OK

>> GO TO 15.

NG

>> Repair or reconnect the hose.

15.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-228, "Component Inspection"

.

OK or NG

OK

>> GO TO 16.

NG

>> Replace EVAP canister purge volume control solenoid valve.

16.

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-180, "Component Inspection"

.

OK or NG

OK

>> GO TO 17.

NG

>> Replace fuel level sensor unit.

17.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-243, "Component Inspection"

.

Vacuum should exist.

Vacuum should exist.

EC-262

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P0456 EVAP CONTROL SYSTEM

OK or NG

OK

>> GO TO 18.

NG

>> Replace EVAP control system pressure sensor.

18.

CHECK EVAP PURGE LINE

Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to 

EC-42, "Description"

.

OK or NG

OK

>> GO TO 19.

NG

>> Repair or reconnect the hose.

19.

CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

>> GO TO 20.

20.

CHECK EVAP/ORVR LINE

Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kinks, looseness and improper
connection. For location, refer to 

EC-42

.

OK or NG

OK

>> GO TO 21.

NG

>> Repair or replace hoses and tubes.

21.

CHECK RECIRCULATION LINE

Check recirculation line between fuel filler tube and fuel tank for clogging, kinks, cracks, looseness and
improper connection. 

OK or NG

OK

>> GO TO 22.

NG

>> Repair or replace hose, tube or fuel filler tube.

22.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-389, "Component Inspection"

.

OK or NG

OK

>> GO TO 23.

NG

>> Replace refueling EVAP vapor cut valve with fuel tank. 

23.

CHECK FUEL LEVEL SENSOR

Refer to 

EC-378

.

OK or NG

OK

>> GO TO 24.

NG

>> Replace fuel level sensor unit.

24.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-46, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005273256

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)

1.

Turn ignition switch OFF.

2.

Remove fuel filler cap.