Infiniti F50. Manual - part 426

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-345

C

D

E

F

G

H

I

J

K

L

M

A

EC

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

PFP:14935

Component Description

EBS00MEQ

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

EBS00MER

Specification data are reference values.

On Board Diagnosis Logic

EBS00MES

SEF032W

PBIB0026E

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

●

Ignition switch: ON

OFF

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

EC-346

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

DTC Confirmation Procedure

EBS00MET

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.
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 8 seconds.

4.

If 1st trip DTC is detected, go to 

EC-348, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-347

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

EBS00MEU

TBWM0131E

EC-348

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

EBS00MEV

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)

158

L/Y

EVAP canister vent control 
valve

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

PBIB0151E