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Nissan Pathfinder (2009 year). Manual - part 338

EC-718

< COMPONENT DIAGNOSIS >

[VK56DE]

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID

VALVE

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

OK or NG

OK (With CONSULT-III)>>GO TO 4.
OK (Without CONSULT-III)>>GO TO 5.
NG

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

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

Reconnect all harness connectors disconnected.

Start engine.

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

OK or NG

>> GO TO 6.

>> GO TO 5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to

EC-718, "Component Inspection"

OK or NG

>> GO TO 6.

>> Replace EVAP canister purge volume control solenoid valve.

CHECK INTERMITTENT INCIDENT

Refer to

GI-49, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000003936649

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT- III

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

Without CONSULT-III

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

Condition

(PURG VOL C/V value)

Air passage continuity

between A and B

100%

Yes

PBIB2058E

Condition

Air passage continuity

between A and B

12V direct current supply between
terminals 1 and 2

Yes

No supply

PBIB2059E

2009 Pathfinder

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-719

< COMPONENT DIAGNOSIS >

[VK56DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

Component Description

INFOID:0000000003936650

The EVAP canister vent control valve (3) is located on the EVAP
canister (4) and is used to seal the canister vent.
• Fuel filler pipe (top of frame view) (1)
• EVAP control system pressure sensor (2)
• Drain filter (5)
•

: Vehicle front

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.

On Board Diagnosis Logic

INFOID:0000000003936651

DTC Confirmation Procedure

INFOID:0000000003936652

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

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

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

Start engine and wait at least 8 seconds.

Check 1st trip DTC.

If 1st trip DTC is detected, go to

EC-719, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003936653

INSPECTION START

Will CONSULT-III be used?

Yes or No

Yes

>> GO TO 2.

>> GO TO 3.

AWBIA0134ZZ

PBIB3642E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0447
0447

EVAP canister vent control
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

EC-720

< COMPONENT DIAGNOSIS >

[VK56DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT

With CONSULT-III

Turn ignition switch OFF and then ON.

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

Touch “ON/OFF” on CONSULT-III screen.

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

OK or NG

>> GO TO 7.

>> GO TO 3.

CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

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

Turn ignition switch ON.

Check voltage between EVAP canister vent control valve termi-
nal 2 and ground with CONSULT-III or tester.

OK or NG

>> GO TO 5.

>> GO TO 4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E41, C1
• IPDM E/R harness connector E119
• Harness for open or short between EVAP canister vent control valve and IPDM E/R

>> Repair harness or connectors.

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

Turn ignition switch OFF.

Disconnect ECM harness connector.

Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 1.
Refer to Wiring Diagram.

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

OK or NG

>> GO TO 7.

>> GO TO 6.

AWBIA0134ZZ

Voltage: Battery voltage

PBIB0192E

Continuity should exist.

2009 Pathfinder

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-721

< COMPONENT DIAGNOSIS >

[VK56DE]

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E41, C1
• 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.

CHECK RUBBER TUBE FOR CLOGGING

Disconnect rubber tube connected to EVAP canister vent control valve.

Check the rubber tube for clogging.

OK or NG

>> GO TO 8.

>> Clean the rubber tube using an air blower.

CHECK DRAIN FILTER

Refer to

EC-721, "Component Inspection"

OK or NG

>> GO TO 9.

>> Replace drain filter.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to

EC-721, "Component Inspection"

OK or NG

>> GO TO 10.

>> Replace EVAP canister vent control valve.

10.

CHECK INTERMITTENT INCIDENT

Refer to

GI-49, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000003936654

EVAP CANISTER VENT CONTROL VALVE

With CONSULT-III

Remove EVAP canister vent control valve from EVAP canister.

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

Reconnect harness connectors disconnected.

Turn ignition switch ON.

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

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.

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

Perform step 6 again.

VENT CONTROL/V Condition

Air passage continuity between A and B

OFF

Yes

PBIB1033E

2009 Pathfinder

EC-722

< COMPONENT DIAGNOSIS >

[VK56DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

If NG, replace EVAP canister vent control valve.

Without CONSULT-III

Remove EVAP canister vent control valve from EVAP canister.

Check portion B of EVAP canister vent control valve for rust.

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.

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

Perform step 3 again.

If NG, replace EVAP canister vent control valve.

DRAIN FILTER

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

Check visually for cracks or flaws in the appearance.

Check visually for cracks or flaws in the hose.

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

Block port B.

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

If NG, replace drain filter.

PBIB1033E

Condition

Air passage continuity between A and B

12V direct current supply between
terminals 1 and 2

OFF

Yes

PBIB1034E

PBIB3641E

2009 Pathfinder

P0448 EVAP CANISTER VENT CONTROL VALVE

EC-723

< COMPONENT DIAGNOSIS >

[VK56DE]

P0448 EVAP CANISTER VENT CONTROL VALVE

Component Description

INFOID:0000000004333364

: Vehicle front

On Board Diagnosis Logic

INFOID:0000000003936656

DTC Confirmation Procedure

INFOID:0000000003936657

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next step.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON and wait at least 5 seconds.

Turn ignition switch OFF and wait at least 10 seconds.

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

Repeat next procedures 3 times.

Rev engine between 3,000 and 3,500 rpm, then maintain that speed for 2 minutes and 50 seconds to 3
minutes.
Do not exceed 3 minutes.

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

Check 1st trip DTC.

If 1st trip DTC is detected, go to

EC-724, "Diagnosis Procedure"

AWBIA0134ZZ

PBIB3642E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0448
0448

EVAP canister vent control
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

EC-724

< COMPONENT DIAGNOSIS >

[VK56DE]

P0448 EVAP CANISTER VENT CONTROL VALVE

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

Repeat next procedure 20 times.

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

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

Check 1st trip DTC.

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

EC-724, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003936658

CHECK RUBBER TUBE

Turn ignition switch OFF.

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

Check the rubber tube for clogging.

OK or NG

>> GO TO 2.

>> Clean rubber tube using an air blower.

CHECK DRAIN FILTER

Refer to

EC-725, "Component Inspection"

OK or NG

>> GO TO 3.

>> Replace drain filter.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to

EC-725, "Component Inspection"

OK or NG

>> GO TO 4.

>> Replace EVAP canister vent control valve.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

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

JMBIA1516GB

AWBIA0134ZZ

2009 Pathfinder

P0448 EVAP CANISTER VENT CONTROL VALVE

EC-725

< COMPONENT DIAGNOSIS >

[VK56DE]

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 5.

>> GO TO 7.

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

>> GO TO 7.

>> GO TO 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.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

Disconnect EVAP control system pressure sensor harness connector.

Check connectors for water.

OK or NG

>> GO TO 8.

>> Replace EVAP control system pressure sensor.