Infiniti M35/M45 Y50. Manual - part 485

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-413

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

4. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

 With CONSULT-II

1.

Reconnect all harness connectors disconnected.

2.

Start engine.

3.

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 6.

NG

>> GO TO 5.

5. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-413, "Component Inspection"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace EVAP canister purge volume control solenoid valve.

6. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-153, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

NBS00502

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 conditions.

 Without CONSULT-II

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

PBIB1678E

Condition

(PURG VOL CONT/V value)

Air passage continuity 

between A and B

100%

Yes

0%

No

PBIB0149E

Condition

Air passage continuity 

between A and B

12V direct current supply between 
terminals 1 and 2

Yes

No supply

No

PBIB0150E

EC-414

[VQ35DE]

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

Removal and Installation

NBS00503

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EM-21, "INTAKE MANIFOLD COLLECTOR"

 .

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

EC-415

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

PFP:14935

Component Description

NBS00504

The EVAP canister vent control valve (1) is located on the EVAP
canister (2) and is used to seal the canister vent.

●

Illustration shows the view from under the vehicle.

●

: Vehicle front

●

EVAP control system pressure sensor (3)

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

NBS00505

Specification data are reference values.

On Board Diagnosis Logic

NBS00506

PBIB2702E

PBIB1263E

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-416

[VQ35DE]

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

DTC Confirmation Procedure

NBS00507

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-418, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y