Nissan Frontier D22. Instruction — part 450

DTC P0441 EVAP CONTROL SYSTEM

EC-903

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

9.

If NG, go to

EC-903, "Diagnostic Procedure"

.

Diagnostic Procedure

UBS00DKS

1.

CHECK EVAP CANISTER

1.

Turn ignition switch OFF.

2.

Check EVAP canister for cracks.

OK or NG

OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG

>> Replace EVAP canister.

2.

CHECK PURGE FLOW

With CONSULT-II

1.

Disconnect vacuum hose connected to EVAP canister purge
volume control solenoid valve at EVAP service port and install
vacuum gauge.

2.

Start engine and let it idle.

3.

Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II.

4.

Rev engine up to 2,000 rpm.

5.

Touch “Qd” and “Qu” on CONSULT-II screen to adjust “PURG
VOL CONT/V” opening.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

3.

CHECK PURGE FLOW

Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Stop engine.

3.

Disconnect vacuum hose connected to EVAP canister purge
volume control solenoid valve at EVAP service port and install
vacuum gauge.

4.

Start engine and let it idle for at least 80 seconds.

5.

Check vacuum gauge indication when revving engine up to
2,000 rpm.
Vacuum should exist.

6.

Release the accelerator pedal fully and let idle.
Vacuum should not exist.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

AEC649A

PURG VOL CONT/V

VACUUM

100%

Should exist

0%

Should not exist

SEF985Y

AEC649A

EC-904

[VG33E]

DTC P0441 EVAP CONTROL SYSTEM

4.

CHECK EVAP PURGE LINE

1.

Turn ignition switch OFF.

2.

Check EVAP purge line for improper connection or disconnection.
Refer to

EC-1165, "EVAPORATIVE EMISSION LINE DRAWING"

.

OK or NG

OK

>> GO TO 5.

NG

>> Repair it.

5.

CHECK EVAP PURGE HOSE AND PURGE PORT

1.

Disconnect purge hoses connected to EVAP service port A and
EVAP canister purge volume control solenoid valve B .

2.

Blow air into each hose and EVAP purge port C .

3.

Check that air flows freely.

OK or NG

OK (with CONSULT-II)>>GO TO 6.
OK (without CONSULT-II)>>GO TO 7.
NG

>> Repair or clean hoses and/or purge port.

SEF367U

SEF368U

DTC P0441 EVAP CONTROL SYSTEM

EC-905

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

6.

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.
If OK, inspection end. If NG, go to following step.

3.

Check air passage continuity.

If NG, replace the EVAP canister purge volume control solenoid
valve.
OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister purge volume control solenoid

valve.

7.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Without CONSULT-II

Check air passage continuity.

If NG, replace the EVAP canister purge volume control solenoid
valve.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister purge volume control solenoid

valve.

8.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR HOSE

1.

Turn ignition switch OFF.

2.

Check disconnection or improper connection of hose connected to EVAP control system pressure sensor.

OK or NG

OK

>> GO TO 9.

NG

>> Repair it.

SEF985Y

Condition

PURG VOL CONT/V value

Air passage continuity between A

and B

100%

Yes

0%

No

SEF660U

Condition

Air passage continuity between A

and B

12V direct current supply
between terminals 1 and 2

Yes

No supply

No

SEF661U

EC-906

[VG33E]

DTC P0441 EVAP CONTROL SYSTEM

9.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1.

Disconnect EVAP control system pressure sensor harness con-
nector.

2.

Check connectors for water.
Water should not exist.

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor.

10.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to DTC Confirmation Procedure for DTC P0452,

EC-934

or P0453,

EC-943

.

OK or NG

OK

>> GO TO 11.

NG

>> Replace EVAP control system pressure sensor.

11.

CHECK EVAP CANISTER VENT CONTROL VALVE

With CONSULT-II

1.

Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

2.

Check air passage continuity and operation delay time.

Operation takes less than 1second.

Without CONSULT-II

1.

Check air passage continuity and operation delay time under the
following condition.

Operation takes less than 1second.

If NG or operation takes more than 1 second, clean valve using air
blower or replace as necessary.
If portion B is rusted, replace control valve.
Make sure new O-ring is installed properly.

OK or NG

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

>> Replace EVAP canister vent control valve.

AEC651A

Condition VENT CONTROL/V

Air passage continuity between

A and B

ON

No

OFF

Yes

SEF013Z

Condition

Air passage continuity between A

and B

12V direct current supply
between terminals 1 and 2

No

OFF

Yes

BBIA0309E