Nissan Frontier D22. Manual - part 307

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-331

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5. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

1.

Start engine.

2.

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

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

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

 Without CONSULT-II

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

OK or NG

OK

>> GO TO 7.

NG

>> Replace EVAP canister purge volume control solenoid valve.

7. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

SEF801Y

SEF334X

SEF335X

EC-332

[KA24DE]

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

PFP:14935

Component Description

UBS00D7M

The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid (the EVAP canister vent control valve) responds to sig-
nals 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 (Small Leak)” diagnosis.

CONSULT-II Reference Value in Data Monitor Mode

UBS00D7N

Specification data are reference values.

On Board Diagnosis Logic

UBS00D7O

DTC Confirmation Procedure

UBS00D7P

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11V at idle.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and wait at least 5 seconds.

4.

If 1st trip DTC is detected, go to 

EC-334, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II”.

SEF378Q

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

●

Ignition switch: ON

OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0447

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

SEF058Y

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-333

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Wiring Diagram

UBS00D7Q

BBWA1062E

EC-334

[KA24DE]

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

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

UBS00D7R

1. 

INSPECTION START

Do you have CONSULT-II?

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

2. 

CHECK CIRCUIT

1.

Turn ignition switch ON.

2.

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

3.

Make sure that ratcheting sound is heard from the vent control
valve.

OK or NG

OK

>> GO TO 7.

NG >> GO 

TO 

3.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

108

R/G

EVAP canister vent control 
valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

SEF802Y