Nissan Cube. Manual - part 342

 

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Nissan Cube. Manual - part 342

 

 

EC-254

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P0441 EVAP CONTROL SYSTEM

P0441 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000009947369

DTC DETECTION LOGIC

NOTE:
If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform
trouble diagnosis for other DTC.
In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions.
Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP
canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP con-
trol system pressure sensor to intake manifold vacuum.
Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow
are adequate. If not, a malfunction is determined.

DTC CONFIRMATION PROCEDURE

1.

INSPECTION START

Do you have CONSULT?

Do you have CONSULT?

YES

>> GO TO 2.

NO

>> GO TO 6.

2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

PBIB1026E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0441

EVAP control system in-
correct purge flow

EVAP control system does not operate properly, 
EVAP control system has a leak between intake 
manifold and EVAP control system pressure sen-
sor.

• EVAP canister purge volume control so-

lenoid valve stuck closed

• EVAP control system pressure sensor 

and the circuit

• Loose, disconnected or improper con-

nection of rubber tube

• Blocked rubber tube
• Cracked EVAP canister
• EVAP canister purge volume control so-

lenoid valve circuit

• Accelerator pedal position sensor
• Blocked purge port
• EVAP canister vent control valve
• Drain filter

P0441 EVAP CONTROL SYSTEM

EC-255

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

C

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EC

N

P

O

TESTING CONDITION:
Always perform test at a temperature of 5

°

C (41

°

F) or more.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Start engine and let it idle for at least 70 seconds.

4.

Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CON-
SULT.

5.

Touch “START”.

Is COMPLETED displayed on CONSULT screen?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

PERFORM DTC CONFIRMATION PROCEDURE-II

When the following conditions are met, “TESTING” will be displayed on the CONSULT screen. Maintain the
conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.)

CAUTION:

Always drive vehicle at a safe speed.
If “TESTING” is not changed for a long time, retry from step 2.

Is “COMPLETED” displayed on CONSULT screen?

YES

>> GO TO 5.

NO

>> Perform DTC CONFIRMATION PROCEDURE again. GO TO 3.

5.

PERFORM DTC CONFIRMATION PROCEDURE-II

Touch “SELF-DIAG RESULT”.

Which is displayed on CONSULT screen?

OK

>> INSPECTION END

NG

>> Go to 

EC-256, "Diagnosis Procedure"

.

6.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-255, "Component Function Check"

.

NOTE:
Use component function check to check the overall monitoring function of the EVAP control system purge flow
monitoring. During this check, a 1st trip DTC might not be confirmed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-256, "Diagnosis Procedure"

.

Component Function Check

INFOID:0000000009947370

1.

PERFORM COMPONENT FUNCTION CHECK

Without CONSULT

1.

Lift up drive wheels.

2.

Start engine and warm it up to normal operating temperature.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

Start engine and wait at least 70 seconds.

Selector lever

Suitable position

VHCL SPEED SE

32 - 120 km/h (20 - 75 mph)

ENG SPEED

500 - 3,800 rpm

B/FUEL SCHDL

1.0 - 10.0 msec

COOLAN TEMP/S

More than 0

°

C (32

°

F)

EC-256

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P0441 EVAP CONTROL SYSTEM

5.

Set voltmeter probes to ECM harness connector and ground.

6.

Check EVAP control system pressure sensor value at idle speed and note it.

7.

Establish and maintain the following conditions for at least 1 minute.

8.

Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed (mea-
sured at step 6 for at least 1 second.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-256, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009947371

1.

CHECK EVAP CANISTER

1.

Turn ignition switch OFF.

2.

Check EVAP canister for cracks.

Is the inspection result normal?

YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO

>> Replace EVAP canister. Refer to 

FL-14, "Removal and Installation"

.

2.

CHECK PURGE FLOW

With CONSULT

1.

Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port and install vacuum gauge. For the location of EVAP service port, refer to 

EC-82, "System

Description"

.

2.

Start engine and let it idle.

3.

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

4.

Rev engine up to 2,000 rpm.

5.

Touch “Qd” and “Qu” on CONSULT screen to adjust “PURG VOL C/V” opening and check vacuum exist-
ence.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 4.

3.

CHECK PURGE FLOW

 Without CONSULT

1.

Start engine and warm it up to normal operating temperature.

2.

Stop engine.

ECM

Ground

Connector

Terminal

F8

42

(EVAP control system pressure sensor signal)

Ground

Air conditioner switch

ON

Headlamp switch

ON

Rear window defogger switch

ON

Engine speed

Approx. 3,000 rpm

Selector lever

Any position other than P, N or R

PURG VOL C/V

Vacuum

100%

Existed

0%

Not existed

P0441 EVAP CONTROL SYSTEM

EC-257

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

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EC

N

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3.

Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port and install vacuum gauge. For the location of EVAP service port, refer to 

EC-82, "System

Description"

.

4.

Start engine and let it idle.
Do not depress accelerator pedal even slightly.

5.

Check vacuum gauge indication before 60 seconds passed after starting engine.

6.

Revving engine up to 2,000rpm after 100 seconds passed after starting engine.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 4.

4.

CHECK EVAP PURGE LINE

1.

Turn ignition switch OFF.

2.

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

EC-82, "System Description"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> 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.

Is the inspection result normal?

YES-1 >> With CONSULT: GO TO 6.
YES-2 >> Without CONSULT: GO TO 7.
NO

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

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT

1.

Start engine.

2.

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

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

Vacuum should not exist.

Vacuum should exist.

SEF367U

SEF368U

 

 

 

 

 

 

 

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