Nissan Pathfinder (2006 year). Manual - part 194

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-411

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2006 Pathfinder

Wiring Diagram

UBS00K9I

BBWA1755E

EC-412

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

2006 Pathfinder

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

UBS00K9J

1. 

INSPECTION START

Do you have CONSULT-II?

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

2. 

CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT

 With CONSULT-II

1.

Turn ignition switch OFF and then turn ON.

2.

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

3.

Touch “ON/OFF” on CONSULT-II 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.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

111

BR

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]

●

For a few seconds after turning ignition 
switch OFF

0 - 1.5V

[Ignition switch: OFF]

●

More than a few seconds after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

117

G

EVAP canister vent control 
valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

PBIB1679E

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-413

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2006 Pathfinder

3. 

CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister vent control valve harness connector.

3.

Turn ignition switch ON.

4.

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

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.

BBIA0551E

Voltage: Battery voltage

PBIB0152E

Continuity should exist.

EC-414

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

2006 Pathfinder

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 EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-414, "Component Inspection"

 .

OK or NG

OK

>> GO TO 9.

NG

>> Replace EVAP canister vent control valve.

9. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

UBS00K9K

EVAP CANISTER VENT CONTROL VALVE

 With CONSULT-II

1.

Remove EVAP canister vent control valve from EVAP canister.

2.

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.

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.
Make sure new O-ring is installed properly.

Operation takes less than 1 second.

If NG, replace EVAP canister vent control valve.
If OK, 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.

 Without CONSULT-II

1.

Remove EVAP canister vent control valve from EVAP canister.

PBIB1033E

Condition VENT CONTROL/V

Air passage continuity

 between (A) and (B)

ON

No

OFF

Yes

PBIB1679E

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-415

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2006 Pathfinder

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.
Make sure new O-ring is installed properly.

Operation takes less than 1 second.

If NG, replace EVAP canister vent control valve.
If OK, 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.

PBIB1033E

Condition

Air passage continuity

 between (A) and (B)

12V direct current supply between
 terminals 1 and 2

No

OFF

Yes

PBIB1034E

EC-416

DTC P0448 EVAP CANISTER VENT CONTROL VALVE

2006 Pathfinder

DTC P0448 EVAP CANISTER VENT CONTROL VALVE

PFP:16935

Component Description

UBS00KFO

The EVAP canister vent control valve is located on the EVAP canis-
ter 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.

CONSULT-II Reference Value in Data Monitor Mode

UBS00KFP

Specification data are reference values.

On Board Diagnosis Logic

UBS00KFQ

PBIB1263E

BBIA0551E

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

●

Ignition switch: ON

OFF

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

●

EVAP canister is saturated with water

DTC P0448 EVAP CANISTER VENT CONTROL VALVE

EC-417

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2006 Pathfinder

DTC Confirmation Procedure

UBS00KFR

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

 WITH CONSULT-II

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-II.

4.

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

5.

Repeat next procedures 3 times.

a.

Increase the engine speed up to 3,000 to 3,500 rpm and keep it
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.

If 1st trip DTC is detected, go to 

EC-419, "Diagnostic Procedure"

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

7.

Repeat next procedure 20 times.

a.

Quickly increase the engine speed up to 4,000 to 4,500 rpm or more and keep it for 25 to 30 seconds.

b.

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

8.

If 1st trip DTC is detected, go to 

EC-419, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y

PBIB0972E

EC-418

DTC P0448 EVAP CANISTER VENT CONTROL VALVE

2006 Pathfinder

Wiring Diagram

UBS00KFS

BBWA1755E