Infiniti M45 (Y34). Manual - part 465

 

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Infiniti M45 (Y34). Manual - part 465

 

 

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-549

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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-550, "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-557, "Component Inspection"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP canister vent control valve.

10. 

CHECK IF EVAP CANISTER SATURATED WITH WATER

1.

Remove EVAP canister with EVAP canister vent control valve attached.

2.

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 11.

No

>> GO TO 14.

PBIB0147E

SEF596U

EC-550

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

11. 

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve attached.
The weight should be less than 1.8 kg (4.0 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 water separator for clogging or poor connection

>> Repair hose or replace EVAP canister.

13. 

CHECK WATER SEPARATOR

Refer to 

EC-543, "Component Inspection"

 .

OK or NG

OK

>> GO TO 14.

NG

>> Clean or replace water separator.

14. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

ABS002QJ

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.

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

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-551

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Removal and Installation

ABS002QK

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EM-18, "INTAKE MANIFOLD"

 .

EC-552

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

PFP:14935

Component Description

ABS002QL

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

ABS002QM

Specification data are reference values.

On Board Diagnosis Logic

ABS002QN

SEF032W

PBIB0026E

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

Ignition switch: ON

OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1446
1446

EVAP canister vent control 
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

Water separator

EVAP canister is saturated with water

 

 

 

 

 

 

 

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