Infiniti M45 (Y34). Manual - part 410

DTC P0441 EVAP CONTROL SYSTEM

EC-329

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9.

If NG, go to 

EC-329, "Diagnostic Procedure"

 .

Diagnostic Procedure

ABS002K4

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. For the location of EVAP service port, refer to

EC-693, "EVAPORATIVE EMISSION LINE DRAWING"

 .

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 and check vacuum existence.

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

PBIB1114E

PURG VOL CONT/V

Vacuum

100%

Should exist.

0%

Should not exist.

PBIB0147E

PBIB1114E

EC-330

DTC P0441 EVAP CONTROL SYSTEM

vacuum gauge. For the location of EVAP service port, refer to 

EC-693, "EVAPORATIVE EMISSION LINE

DRAWING"

 .

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.

6.

Release the accelerator pedal fully and let engine idle.

OK or NG

OK

>> GO TO 7.

NG

>> 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-693, "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.

Vacuum should exist.

Vacuum should not exist.

SEF367U

SEF368U

DTC P0441 EVAP CONTROL SYSTEM

EC-331

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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.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-550, "Component Inspection"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister purge volume control solenoid valve.

8. 

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1.

Disconnect EVAP control system pressure sensor harness connector.

2.

Check connectors for water.

OK or NG

OK

>> GO TO 9.

NG

>> Replace EVAP control system pressure sensor.

9. 

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to DTC Confirmation Procedure for DTC P0452 

EC-356

 , P0453 

EC-363

 .

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor.

10. 

CHECK RUBBER TUBE FOR CLOGGING

1.

Disconnect rubber tube connected to EVAP canister vent control valve.

2.

Check the rubber tube for clogging.

OK or NG

OK

>> GO TO 11.

NG

>> Clean the rubber tube using an air blower.

11. 

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-557, "Component Inspection"

 .

OK or NG

OK

>> GO TO 12.

NG

>> Replace EVAP canister vent control valve.

PBIB0147E

Water should not exist.

EC-332

DTC P0441 EVAP CONTROL SYSTEM

12. 

CHECK EVAP PURGE LINE

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to 

EC-693, "EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Replace it.

13. 

CLEAN EVAP PURGE LINE

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

>> GO TO 14.

14. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END