Nissan Pathfinder (2009 year). Manual - part 279

 

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Nissan Pathfinder (2009 year). Manual - part 279

 

 

EC-246

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

P0447 EVAP CANISTER VENT CONTROL VALVE

Component Description

INFOID:0000000004297434

The EVAP canister vent control valve (3) is located on the EVAP
canister (4) and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows EVAP
Control System diagnosis.
• Fuel filler pipe (top of frame view) (1)
• EVAP control system pressure sensor (2)
• Drain filter (5)
•

: Vehicle front

On Board Diagnosis Logic

INFOID:0000000004297435

DTC Confirmation Procedure

INFOID:0000000004297436

NOTE:
If DTC Confirmation Procedure has been previously conducted, always perfom the following before conduct-
ing the next step.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11V at idle.
1.

Start engine and wait at least 8 seconds.

2.

Check 1st trip DTC.

3.

If 1st trip DTC is detected, go to 

EC-246, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000004297437

1.

INSPECTION START

Do you have CONSULT-III?

Yes or No

Yes

>> GO TO 2.

PBIB3642E

AWBIA0134ZZ

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0447
0447

EVAP canister vent con-
trol valve circuit open

An improper voltage signal is sent to ECM 
through EVAP canister vent control valve.

• Harness or connectors

(The valve circuit is open or shorted.)

• EVAP canister vent control valve
• Drain filter

2009 Pathfinder

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-247

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

No

>> GO TO 3.

2.

CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT

 With CONSULT-III

1.

Turn ignition switch OFF and then ON.

2.

Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-III.

3.

Touch “ON/OFF” on CONSULT-III screen.

4.

Check for operating sound of the valve.
Clicking noise should be heard.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 3.

3.

CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister vent control valve (3) harness con-
nector.

-

Fuel filler pipe (top of frame view) (1)

-

EVAP control system pressure sensor (2)

-

EVAP canister (4)

-

Drain filter (5)

-

: Vehicle front

3.

Turn ignition switch ON.

4.

Check voltage between EVAP canister vent control valve termi-
nal 1 and ground with CONSULT-III or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E41, C1
• Harness for open or short between EVAP canister vent control valve and IPDM E/R

>> Repair harness or connectors.

5.

CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 2.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

AWBIA0134ZZ

Voltage: Battery voltage

PBIB0152E

Continuity should exist.

2009 Pathfinder

EC-248

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

6.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors C1, E41
• Harness for open or short between EVAP canister vent control valve and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

7.

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 8.

NG

>> Clean the rubber tube using an air blower.

8.

CHECK DRAIN FILTER

Refer to 

EC-248, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace drain filter.

9.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-248, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP canister vent control valve.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000004297438

EVAP CANISTER VENT CONTROL VALVE

 With CONSULT-III

1.

Remove EVAP canister vent control valve from EVAP canister.

2.

Check portion B of EVAP canister vent control valve for rust.
If NG, replace EVAP canister vent control valve.
If OK, go to next step.

3.

Reconnect harness connectors disconnected.

4.

Turn ignition switch ON.

5.

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

6.

Check air passage continuity and operation delay time.
Check that new O-ring is installed properly.

Operation takes less than 1 second.

If NG, go to next step.

7.

Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.

8.

Perform step 6 again.

Condition VENT CONTROL/V

Air passage continuity

 between (A) and (B)

ON

No

OFF

Yes

PBIB1033E

2009 Pathfinder

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-249

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

9.

If NG, replace EVAP canister vent control valve.

 Without CONSULT-III

1.

Remove EVAP canister vent control valve from EVAP canister.

2.

Check portion B of EVAP canister vent control valve for being
rusted.

3.

Check air passage continuity and operation delay time under the
following conditions.
Check that new O-ring is installed properly.

Operation takes less than 1 second.

If NG, go to next step.

4.

Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.

5.

Perform step 3 again.

6.

If NG, replace EVAP canister vent control valve.

DRAIN FILTER

1.

Check visually for insect nests in the drain filter air inlet.

2.

Check visually for cracks or flaws in the appearance.

3.

Check visually for cracks or flaws in the hose.

4.

Blow air into port A and check that it flows freely out of port B.

5.

Block port B.

6.

Blow air into port A and check that there is no leakage.

7.

If NG, replace drain filter.

PBIB1033E

Condition

Air passage continuity

 between (A) and (B)

12V direct current supply between
 terminals 1 and 2

No

OFF

Yes

PBIB1034E

PBIB3641E

2009 Pathfinder

EC-250

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0448 EVAP CANISTER VENT CONTROL VALVE

P0448 EVAP CANISTER VENT CONTROL VALVE

Component Description

INFOID:0000000004297439

The EVAP canister vent control valve (3) is located on the EVAP
canister (4) and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows EVAP
Control System diagnosis.
• Fuel filler pipe (top of frame view) (1)
• EVAP control system pressure sensor (2)
• Drain filter (5)
•

: Vehicle front

On Board Diagnosis Logic

INFOID:0000000004297440

DTC Confirmation Procedure

INFOID:0000000004297441

NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next step.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

 WITH CONSULT-III

1.

Turn ignition switch ON and wait at least 5 seconds.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

4.

Start engine and let it idle for at least 1 minute. 

5.

Repeat next procedures 3 times.

PBIB3642E

AWBIA0134ZZ

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0448
0448

EVAP canister vent con-
trol valve close

EVAP canister vent control valve remains 
closed under specified driving conditions.

• EVAP canister vent control valve
• EVAP control system pressure sensor 

and the circuit

• Blocked rubber tube to EVAP canister 

vent control valve

• Drain filter
• EVAP canister is saturated with water

2009 Pathfinder

P0448 EVAP CANISTER VENT CONTROL VALVE

EC-251

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

a.

Increase the engine speed between 3,000 and 3,500 rpm and maintain that speed for 2 minutes and 50
seconds to 3 minutes.
Never exceed 3 minutes.

b.

Fully released accelerator pedal and keep engine idle for about 5 seconds.

6.

Check 1st trip DTC.

7.

If 1st trip DTC is detected, go to 

EC-251, "Diagnosis Procedure"

.

If 1st trip DTC is not detected, go to the next step.

8.

Repeat next procedure 20 times.

a.

Quickly increase the engine speed between 4,000 and 4,500 rpm or more and maintain that speed for 25
to 30 seconds.

b.

Fully released accelerator pedal and keep engine idle for at least 35 seconds.

9.

Check 1st trip DTC.

10. If 1st trip DTC is detected, go to 

EC-251, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000004297442

1.

CHECK RUBBER TUBE

1.

Turn ignition switch OFF.

2.

Disconnect rubber tube connected to EVAP canister vent control
valve (3).

-

Fuel filler pipe (top of frame view) (1)

-

EVAP control system pressure sensor (2)

-

EVAP canister (4)

-

Drain filter (5)

-

: Vehicle front

3.

Check the rubber tube for clogging.

OK or NG

OK

>> GO TO 2.

NG

>> Clean rubber tube using an air blower.

2.

CHECK DRAIN FILTER

Refer to 

EC-248, "Component Inspection"

.

OK or NG

OK

>> GO TO 3.

NG

>> Replace drain filter.

3.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-252, "Component Inspection"

.

OK or NG

OK

>> GO TO 4.

NG

>> Replace EVAP canister vent control valve.

4.

CHECK IF EVAP CANISTER SATURATED IS WITH WATER

JMBIA1516GB

AWBIA0134ZZ

2009 Pathfinder

EC-252

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0448 EVAP CANISTER VENT CONTROL VALVE

1.

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.

2.

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 5.

No

>> GO TO 7.

5.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.0 kg (4.4 lb).
OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and drain filter for clogging or poor connection

>> Repair hose or replace EVAP canister.

7.

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 8.

NG

>> Replace EVAP control system pressure sensor.

8.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-261, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace EVAP control system pressure sensor.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-49, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000004297443

EVAP CANISTER VENT CONTROL VALVE

 With CONSULT-III

1.

Remove EVAP canister vent control valve from EVAP canister.

BBIA0558E

Water should not exist.

2009 Pathfinder

P0448 EVAP CANISTER VENT CONTROL VALVE

EC-253

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

2.

Check portionof B EVAP canister vent control valve for being
rusted.
If NG, replace EVAP canister vent control valve.
If OK, go to next step.

3.

Reconnect harness connectors disconnected.

4.

Turn ignition switch ON.

5.

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

6.

Check air passage continuity and operation delay time.
Check that new O-ring is installed properly.

Operation takes less than 1 second.

If NG, go to next step.

7.

Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.

8.

Perform step 6 again.

9.

If NG, replace EVAP canister vent control valve.

 Without CONSULT-III

1.

Remove EVAP canister vent control valve from EVAP canister.

2.

Check portion B of EVAP canister vent control valve for being
rusted.

3.

Check air passage continuity and operation delay time under the
following conditions.
Check that new O-ring is installed properly.

Operation takes less than 1 second.

If NG, go to next step.

4.

Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.

5.

Perform step 3 again.

6.

If NG, replace EVAP canister vent control valve.

PBIB1033E

Condition VENT CONTROL/V

Air passage continuity

 between (A) and (B)

ON

No

OFF

Yes

PBIB1033E

Condition

Air passage continuity

 between (A) and (B)

12V direct current supply between
 terminals 1 and 2

No

OFF

Yes

PBIB1034E

2009 Pathfinder

 

 

 

 

 

 

 

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