Infiniti Q45. Manual - part 456

 

  Index      Infiniti     Infiniti Q45 - service repair manual 2006 year

 

Search            copyright infringement  

 

 

 

 

 

 

 



 

 

Content   ..  454  455  456  457   ..

 

 

Infiniti Q45. Manual - part 456

 

 

DTC P0456 EVAP CONTROL SYSTEM

EC-463

C

D

E

F

G

H

I

J

K

L

M

A

EC

6. 

CHECK FOR EVAP LEAK

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-II.

3.

Touch “START” and apply pressure into the EVAP line until the
pressure indicator reaches the middle of the bar graph.

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.

4.

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

EC-33, "EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

PEF917U

SEF200U

EC-464

DTC P0456 EVAP CONTROL SYSTEM

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.)

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),
then remove pump and EVAP service port adapter.

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 pressure in the system.

5.

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

EC-33, "EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace.

8. 

CHECK WATER SEPARATOR

Refer to 

EC-467, "Component Inspection"

 .

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-420, "DTC Confirmation Procedure"

 .

OK or NG

OK

>> GO TO 10.

NG

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

PBIB0189E

SEF200U

DTC P0456 EVAP CONTROL SYSTEM

EC-465

C

D

E

F

G

H

I

J

K

L

M

A

EC

10. 

CHECK IF EVAP CANISTER SATURATED WITH WATER

1.

Remove EVAP canister with EVAP canister vent control valve attached.

2.

Does water 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 the 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.

EVAP canister for damage

EVAP hose between EVAP canister and water separator for clogging or poor connection

>> Repair hose or replace EVAP canister.

13. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

 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%.

5.

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

OK or NG

OK

>> GO TO 16.

NG

>> GO TO 15.

SEF596U

Vacuum should exist.

PBIB1678E

EC-466

DTC P0456 EVAP CONTROL SYSTEM

14. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

 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 80 seconds.

5.

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

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-102, "Vacuum Hose Drawing"

 .

OK or NG

OK

>> GO TO 16.

NG

>> Repair or reconnect the hose.

16. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-411, "Component Inspection"

 .

OK or NG

OK

>> GO TO 17.

NG

>> Replace EVAP canister purge volume control solenoid valve.

17. 

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-347, "Component Inspection"

 .

OK or NG

OK

>> GO TO 18.

NG

>> Replace fuel level sensor unit.

18. 

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-450, "Component Inspection"

 .

OK or NG

OK

>> GO TO 19.

NG

>> Replace EVAP control system pressure sensor.

19. 

CHECK EVAP PURGE LINE

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

EC-33, "EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 20.

NG

>> Repair or reconnect the hose.

20. 

CLEAN EVAP PURGE LINE

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

>> GO TO 21.

Vacuum should exist.

 

 

 

 

 

 

 

Content   ..  454  455  456  457   ..