Nissan Frontier D22. Manual - part 304

DTC P0442 EVAP CONTROL SYSTEM

EC-319

[KA24DE]

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7. 

CHECK FOR EVAP LEAK

Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Apply 12 volts DC to EVAP canister vent control valve. The
valve will close. (Continue to apply 12 volts until the end of test.)

3.

Apply 12 volts DC to vacuum cut valve bypass valve. The valve
will open. (Continue to apply 12 volts until the end of test.)
Shown in the above figure.

4.

Pressurize the EVAP line using pressure pump with 1.3 to 2.7
kPa (10 to 20 mmHg, 0.39 to 0.79 inHg).

NOTE:

●

Never use compressed air or a high pressure pump.

●

Do not exceed 4.12 kPa (0.042 kg/cm

2

 , 0.6 psi) of pres-

sure in the system.

5.

Using EVAP leak detector, locate the leak. For the leak detector,
refer to instruction manual for more details. Refer to 

EC-565,

"EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

8. 

CHECK WATER SEPARATOR

1.

Check visually for insect nests in the water separator air inlet.

2.

Check visually for cracks or flaws in the appearance.

3.

Check visually for cracks or flaws in the hose.

4.

Check that A  and C  are not clogged by blowing air into B  with
A , and then C  plugged.

5.

In case of NG in items 2 - 4, replace the parts.

●

Do not disassemble water separator.

OK or NG

OK

>> GO TO 9.

NG

>> Replace water separator.

9. 

CHECK EVAP CANISTER VENT CONTROL VALVE, O-RING AND CIRCUIT

Refer to 

EC-482, "DTC Confirmation Procedure"

 .

OK or NG

OK

>> GO TO 10.

NG

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

SEF503V

SEF200U

PBIB1032E

EC-320

[KA24DE]

DTC P0442 EVAP CONTROL SYSTEM

10. 

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

1.

Remove EVAP canister with EVAP canister vent control valve attached.

2.

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 11.

No (With CONSULT-II)>>GO TO 13.
No (Without CONSULT-II)>>GO TO 14.

11. 

CHECK EVAP CANISTER

Weigh the EVAP canister with EVAP canister vent control valve attached.
The weight should be less than 1.8 kg (4.0 lb).

OK or NG

OK (With CONSULT-II)>>GO TO 13.
OK (Without CONSULT-II)>>GO TO 14.
NG

>> GO TO 12

12. 

DETECT MALFUNCTIONING PART

Check the following.

1.

Visually check the EVAP canister for damage.

2.

Check hose connection between EVAP canister and water separator for clogging and poor connection.

>> Repair hose or replace EVAP canister.

13. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

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-II screen to increase “PURG VOL CONT/V” opening to 100.0%.

5.

Check vacuum hose for vacuum.

OK or NG

OK

>> GO TO 17.

NG

>> GO TO 15.

SEF596U

SEF595Y

DTC P0442 EVAP CONTROL SYSTEM

EC-321

[KA24DE]

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14. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 Without CONSULT-II

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 60 seconds.

5.

Check vacuum hose for vacuum when revving engine up to 2,000 rpm.
Vacuum should exist.

OK or NG

OK

>> GO TO 17.

NG

>> GO TO 15.

15. 

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to 

EC-30, "Vacuum Hose Drawing"

 .

OK or NG

OK (With CONSULT-II)>>GO TO 16.
OK (Without CONSULT-II)>>GO TO 17. 
NG

>> Repair or reconnect the hose.

16. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

1.

Start engine.

2.

Perform  “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.

OK or NG

OK

>> GO TO 18.

NG

>> GO TO 17.

SEF801Y

EC-322

[KA24DE]

DTC P0442 EVAP CONTROL SYSTEM

17. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following condi-
tions.

 Without CONSULT-II

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following condi-
tions.

OK or NG

OK

>> GO TO 18.

NG

>> Replace EVAP canister purge volume control solenoid valve.

SEF334X

SEF335X