Nissan Pathfinder (2008 year). Manual - part 324

 

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Nissan Pathfinder (2008 year). Manual - part 324

 

 

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-709

< COMPONENT DIAGNOSIS >

[VK56DE]

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4.

Check voltage between EVAP canister purge volume control
solenoid valve terminal 1 and ground with CONSULT-III or
tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E2, F32
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

>> Repair harness or connectors.

3.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 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 45 and EVAP canister purge volume control solenoid
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 4.

NG

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

4.

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 5.

NG

>> Replace EVAP control system pressure sensor.

5.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-725, "Component Inspection"

.

OK or NG

OK (With CONSULT-III)>>GO TO 6.
OK (Without CONSULT-III)>>GO TO 7.
NG

>> Replace EVAP control system pressure sensor.

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-III

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Start engine.

4.

Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. 

5.

Check that engine speed varies according to the valve opening.

OK or NG

Voltage: Battery voltage

PBIB2245E

Continuity should exist.

Water should not exist.

EC-710

< COMPONENT DIAGNOSIS >

[VK56DE]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-711, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister purge volume control solenoid valve.

8.

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 9.

NG

>> Clean the rubber tube using an air blower.

9.

CHECK DRAIN FILTER

Refer to 

EC-711, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace drain filter.

10.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-717, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> Replace EVAP canister vent control valve.

11.

CHECK IF EVAP CANISTER SATURATED WITH WATER

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 12.

No

>> GO TO 14.

12.

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 14.

NG

>> GO TO 13.

13.

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.

BBIA0558E

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-711

< COMPONENT DIAGNOSIS >

[VK56DE]

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14.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-51, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001537786

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.

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.

Condition

(PURG VOL CONT/V value)

Air passage continuity 

between A and B

100%

Yes

0%

No

PBIB2058E

Condition

Air passage continuity 

between A and B

12V direct current supply between 
terminals 1 and 2

Yes

No supply

No

PBIB2059E

PBIB3641E

EC-712

< COMPONENT DIAGNOSIS >

[VK56DE]

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Description

INFOID:0000000001537787

SYSTEM DESCRIPTION 

*1: ECM determines the start signal status by the signals of engine speed and battery voltage.

*2: This signal is sent to the ECM through CAN communication line.

This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-
sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP
canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is
determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor
from the EVAP canister is regulated as the air flow changes.

COMPONENT DESCRIPTION

The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.

On Board Diagnosis Logic

INFOID:0000000001537788

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

1

EVAP canister 
purge flow control

EVAP canister purge vol-
ume control solenoid valve

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Battery 

Battery voltage*

1

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Fuel tank temperature sensor

Fuel temperature in fuel tank

Wheel sensor

Vehicle speed*

2

PBIB2057E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0444
0444

EVAP canister purge volume 
control solenoid valve circuit 
open

An excessively low voltage signal is sent 
to ECM through the valve 

• Harness or connectors

(The solenoid valve circuit is open or 
shorted.)

• EVAP canister purge volume control so-

lenoid valve

P0445
0445

EVAP canister purge volume 
control solenoid valve circuit 
shorted

An excessively high voltage signal is sent 
to ECM through the valve

• Harness or connectors

(The solenoid valve circuit is shorted.)

• EVAP canister purge volume control so-

lenoid valve

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-713

< COMPONENT DIAGNOSIS >

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DTC Confirmation Procedure

INFOID:0000000001537789

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.

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

Start engine and let it idle for at least 13 seconds.

2.

Check 1st trip DTC.

3.

If 1st trip DTC is detected, go to 

EC-713, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001537790

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister purge volume control solenoid valve
(1) harness connector.

-

EVAP service port (2)

-

: Vehicle front

3.

Turn ignition switch ON.

4.

Check voltage between EVAP canister purge volume control
solenoid valve terminal 1 and ground with CONSULT-III or
tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E2, F32
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

>> Repair harness or connectors.

3.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 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 45 and EVAP canister purge volume control solenoid
valve terminal 2. Refer to Wiring Diagram.

ALBIA0349ZZ

Voltage: Battery voltage

PBIB2245E

Continuity should exist.

EC-714

< COMPONENT DIAGNOSIS >

[VK56DE]

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

4.

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.

4.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

 With CONSULT-III

1.

Reconnect all harness connectors disconnected.

2.

Start engine.

3.

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

OK

>> GO TO 6.

NG

>> GO TO 5.

5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-714, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> Replace EVAP canister purge volume control solenoid valve.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-51, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001537791

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 CONT/V value)

Air passage continuity 

between A and B

100%

Yes

0%

No

PBIB2058E

Condition

Air passage continuity 

between A and B

12V direct current supply between 
terminals 1 and 2

Yes

No supply

No

PBIB2059E

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-715

< COMPONENT DIAGNOSIS >

[VK56DE]

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P0447 EVAP CANISTER VENT CONTROL VALVE

Component Description

INFOID:0000000001537792

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:0000000001537793

DTC Confirmation Procedure

INFOID:0000000001537794

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.

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-715, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001537795

1.

INSPECTION START

Do you have CONSULT-III?

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

EC-716

< COMPONENT DIAGNOSIS >

[VK56DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

2.

CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT

 With CONSULT-III

1.

Turn ignition switch OFF and then turn 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.

-

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 ccanister (4)

-

Drain filter (5)

-

: Vehicle front

2.

Turn ignition switch ON.

3.

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

AWBIA0134ZZ

Voltage: Battery voltage

PBIB0080E

Continuity should exist.

 

 

 

 

 

 

 

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