P1446

Component Description
The EVAP canister vent control valve is located on the EVAP canister 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 evaporative emission control system is depressurized and allows "EVAP Control System (Small Leak)" diagnosis.

Consult-II Reference Value In Data Monitor Mode:

ECM Terminals And Reference Value:

On Board Diagnosis Logic:

DTC Confirmation Procedure

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 5 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 "Diagnostic Procedure" below.

With GST
Follow the procedure "With CONSULT-II".

EC-VENT/V-01:

EC-VENT/V-01 Connector View:

Wiring Diagram

Steps 1 - 3:

Steps 4 - 9:

Diagnostic Procedure

Component Inspection

EVAP CANISTER VENT CONTROL VALVE
Check air passage continuity.







With CONSULT-II
Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.







Without CONSULT-II
If NG or operation takes more than 1 second, clean valve using air blower or replace as necessary.

If portion B is rusted, replace control valve.
Make sure new O-ring is installed properly.




WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.
5. In case of NG in items 2 - 4, replace the parts.

NOTE: Do not disassemble water separator.