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 (the EVAP canister vent control 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
Specification data are reference values.




ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and 32 (ECM ground).

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.

TESTING CONDITION: Always perform at a temperature above 0 °C (32 °F).

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 5 seconds.
3. Turn ignition switch ON.




4. Select "DATA MONITOR" mode with CONSULT-II.
5. Check that TANK F/TMP SE is 0 °C (32 °F) or more.
6. Drive vehicle at a speed of approximately 80 km/h (50 MPH) for a maximum of 15 minutes.
7. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE" .

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

With GST
1. Start engine and warm it up to normal operating temperature.




2. Check that voltage between ECM terminal 60 (fuel tank temperature sensor signal) and ground is less than 4.2 V.
3. Drive vehicle at a speed of approximately 80 km/h (50 MPH) for 15 minutes.
4. Select "MODE 7" with GST.
5. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE" .

No Tools
1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 60 (fuel tank temperature sensor signal) and ground is less than 4.2 V.
3. Drive vehicle at a speed of approximately 80 km/h (50 MPH) for 15 minutes.
4. Turn ignition switch OFF and wait at least 5 seconds.
5. Turn ignition switch ON and perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
6. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

Diagnostic Procedure

Step 1:

Step 2:

Step 3 - 5:

Step 6 - 10: