Infiniti F50. Manual - part 476

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-545

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EC

Removal and Installation

EBS00MKT

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EM-17, "INTAKE MANIFOLD"

 .

EC-546

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.

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EVAP canister vent control valve

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EVAP control system pressure sensor 
and the circuit

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Blocked rubber tube to EVAP canister 
vent control valve

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Water separator

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EVAP canister is saturated with water

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

EC-547

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DTC Confirmation Procedure

ABS002QO

CAUTION:

Always drive vehicle at a safe speed.
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.

 WITH CONSULT-II

1.

Turn ignition switch “ON”.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine.

4.

Drive vehicle at a speed of approximately 80 km/h (50 MPH) for
a maximum of 15 minutes.

NOTE:
If a malfunction exists, NG result may be displayed quicker.

5.

If 1st trip DTC is detected, go to 

EC-549, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

PBIB1917E

EC-548

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

Wiring Diagram

ABS002QP

TBWM0131E