Nissan Xterra. Manual - part 292

EC-294

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P0442 EVAP CONTROL SYSTEM

• 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-32, "Description"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

7.

CHECK FOR EVAP LEAK

Without CONSULT

1. Turn ignition switch OFF.

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.)

-

Fuel filler pipe (1)

-

EVAP control system pressure sensor (2)

-

EVAP canister (4)

-

Drain filter (5)

-

: Vehicle front

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-32, "Description"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

8.

CHECK DRAIN FILTER

Refer to 

EC-297, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace drain filter.

9.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.

• EVAP canister vent control valve is installed properly.

Refer to 

FL-16, "Removal and Installation"

.

• EVAP canister vent control valve.

Refer to 

EC-309, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace EVAP canister vent control valve and O-ring.

SEF200U

AWBIA0223ZZ

SEF200U

P0442 EVAP CONTROL SYSTEM

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10.

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 11.

No (With CONSULT)>>GO TO 13.

No (Without CONSULT)>>GO TO 14.

11.

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)>>GO TO 13.

OK (Without CONSULT)>>GO TO 14.

NG

>> GO TO 12.

12.

DETECT MALFUNCTIONING PART

Check the following.

• EVAP canister for damage

• EVAP hose between EVAP canister and drain filter for clogging or poor connection

>> Repair hose or replace EVAP canister.

13.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT

1. Disconnect vacuum hose from EVAP canister purge volume 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 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 17.

NG

>> GO TO 15.

14.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT

1. Start engine and warm it up to normal operating temperature.

2. Stop engine.

3. Disconnect vacuum hose from EVAP canister purge volume 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.

OK or NG

OK

>> GO TO 16.

NG

>> GO TO 15.

15.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to 

EC-32, "Description"

.

BBIA0558E

Vacuum should exist.

EC-296

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P0442 EVAP CONTROL SYSTEM

OK or NG

OK

>> GO TO 16.

NG

>> Repair or reconnect the hose.

16.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-306, "Component Inspection"

.

OK or NG

OK

>> GO TO 17.

NG

>> Replace EVAP canister purge volume control solenoid valve. Refer to 

EM-25, "Exploded View"

.

17.

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-250, "Component Inspection"

.

OK or NG

OK

>> GO TO 18.

NG

>> Replace fuel level sensor unit. Refer to 

FL-11, "Removal and Installation"

.

18.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-323, "Component Inspection"

.

OK or NG

OK

>> GO TO 19.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Removal and Installation"

.

19.

CHECK EVAP PURGE LINE

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

Refer to 

EC-32, "Description"

.

OK or NG

OK

>> GO TO 20.

NG

>> Repair or reconnect the hose.

20.

CLEAN EVAP PURGE LINE

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

>> GO TO 21.

21.

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-475, "System Description"

.

OK or NG

OK

>> GO TO 22.

NG

>> Repair or replace hoses and tubes.

22.

CHECK RECIRCULATION LINE

Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and

improper connection.
OK or NG

OK

>> GO TO 23.

NG

>> Repair or replace hose, tube or filler neck tube. Refer to 

FL-6, "Removal and Installation"

.

23.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-478, "Component Inspection"

.

OK or NG

OK

>> GO TO 24.

NG

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

FL-6, "Removal and Installation"

.

24.

CHECK FUEL LEVEL SENSOR

Refer to 

MWI-34, "Component Inspection"

.

OK or NG

P0442 EVAP CONTROL SYSTEM

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OK

>> GO TO 25.

NG

>> Replace fuel level sensor unit. Refer to 

FL-11, "Removal and Installation"

.

25.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009483999

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

1. Wipe clean valve housing.

2. Check valve opening pressure and vacuum.

3. If out of specification, replace fuel filler cap as an assembly.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incor-

rect fuel filler cap is used, the MIL may illuminate.

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.

SEF445Y

Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

2

, 2.22 - 

2.90 psi)

Vacuum:

−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm

2

, 

−0.87 to −0.48 psi)

SEF943S

PBIB3641E