Nissan Altima L32. Manual - part 294

P0442 EVAP CONTROL SYSTEM

EC-297

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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 filler 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-300, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace fuel filler cap with a genuine one.

5.

CHECK FOR EVAP LEAK

Refer to 

EC-86, "System Diagram"

.

Is there any leak in EVAP line?

YES

>> Repair or replace.

NO

>> GO TO 6.

6.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.

• EVAP canister vent control valve is installed properly.

Refer to 

EC-553, "Exploded View"

.

• EVAP canister vent control valve.

Refer to 

EC-310, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

7.

CHECK IF EVAP CANISTER SATURATED WITH WATER

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached.

SEF915U

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[QR25DE FOR CALIFORNIA]

P0442 EVAP CONTROL SYSTEM

2. Does water drain from the EVAP canister?
Does water drain from the EVAP canister?

YES

>> GO TO 8.

NO-1 >> With CONSULT-III: GO TO 10.

NO-2 >> Without CONSULT-III: GO TO 11.

8.

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 2.1 kg (4.6 lb).
Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 10.

YES-2 >> Without CONSULT-III: GO TO 11.

NO

>> GO TO 9.

9.

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.

10.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1. Disconnect vacuum hose to 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-III screen to increase “PURG VOL CONT/V” opening to 100%.

5. Check vacuum hose for vacuum.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> GO TO 12.

11.

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 to 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.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> GO TO 12.

12.

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to 

EC-86, "System Diagram"

.

Is the inspection result normal?

PBIB1213E

Vacuum should exist.

Vacuum should exist.

P0442 EVAP CONTROL SYSTEM

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YES

>> GO TO 13.

NO

>> Repair or reconnect the hose.

13.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-304, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> Replace EVAP canister purge volume control solenoid valve.

14.

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-264, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Replace fuel level sensor unit.

15.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-316, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> Replace EVAP control system pressure sensor.

16.

CHECK EVAP PURGE LINE

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

Refer to 

EC-86, "System Diagram"

.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Repair or reconnect the hose.

17.

CLEAN EVAP PURGE LINE

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

>> GO TO 18.

18.

CHECK EVAP/ORVR LINE

Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper con-

nection. For location, refer to 

EC-476, "Description"

.

Is the inspection result normal?

YES

>> GO TO 19.

NO

>> Repair or replace hoses and tubes.

19.

CHECK RECIRCULATION LINE

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

improper connection.
Is the inspection result normal?

YES

>> GO TO 20.

NO

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

20.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-479, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 21.

NO

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

21.

CHECK FUEL LEVEL SENSOR

Refer to 

MWI-47, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 22.

EC-300

< COMPONENT DIAGNOSIS >

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P0442 EVAP CONTROL SYSTEM

NO

>> Replace fuel level sensor unit.

22.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000004349332

1.

CHECK FUEL TANK VACUUM RELIEF VALVE

1. Turn ignition switch OFF.

2. Remove fuel filler cap.

3. Wipe clean valve housing.

4. Install fuel filler cap adapter (commercial service tool) to fuel filler cap.

5. Check valve opening pressure and vacuum.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE FUEL FILLER CAP

Replace fuel filler cap.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may

come on.

>> INSPECTION END

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