Infiniti M35/M45 Y50. Manual - part 660

DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-1113

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

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-1144, "Component Inspection"

 .

OK or NG

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

>> Replace EVAP control system pressure sensor.

6. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

1.

Turn ignition switch OFF.

2.

Reconnect harness connectors disconnected.

3.

Start engine.

4.

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 8.

NG

>> GO TO 7.

7. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-1115, "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 EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-1128, "Component Inspection"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP canister vent control valve.

Water should not exist.

PBIB1678E

EC-1114

[VK45DE]

DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

10. 

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.

Does water drain from the EVAP canister (1)?

–

EVAP canister vent control valve (2)

Yes or No

Yes

>> GO TO 11.

No

>> GO TO 13.

11. 

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 13.

NG

>> GO TO 12.

12. 

DETECT MALFUNCTIONING PART

Check the following.

●

EVAP canister for damage

●

EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister.

13. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

PBIB2731E

DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-1115

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Component Inspection

NBS005HA

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.

Removal and Installation

NBS005HB

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to

EM-179, "INTAKE MANIFOLD"

 .

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-1116

[VK45DE]

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

PFP:14920

Description

NBS005HC

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.

CONSULT-II Reference Value in Data Monitor Mode

NBS005HD

Specification data are reference values.

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 volume 
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

SEF337U

MONITOR ITEM

CONDITION

SPECIFICATION

PURG VOL C/V

●

Engine: After warming up

●

Selector lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle
(Accelerator pedal: Not depressed even 
slightly, after engine starting.)

0%

2,000 rpm

—