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" diagnosis.
DTC Logic
DTC DETECTION LOGIC
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
- Increase the engine speed up to between 3,000 and 3,500 rpm and maintain that speed it for 2 minutes and 50 seconds to 3 minutes.
Never exceed 3 minutes.
- Fully released accelerator pedal and keep engine idle for about 5 seconds.
- Quickly increase the engine speed up to between 4,000 and 4,500 rpm and maintain that speed it for 25 to 30 seconds.
- Fully released accelerator pedal and keep engine idle for at least 35 seconds.
Diagnosis Procedure
1.CHECK RUBBER TUBE
2.CHECK DRAIN FILTER
3.CHECK EVAP CANISTER VENT CONTROL VALVE
4.CHECK IF EVAP CANISTER IS SATURATED WITH WATER
5.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 2.1 kg (4.6 lb).
6.DETECT MALFUNCTIONING PART
Check the following.
7.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
9.CHECK INTERMITTENT INCIDENT
Component Inspection
EVAP CANISTER VENT CONTROL VALVE
1.CHECK EVAP CANISTER VENT CONTROL VALVE-I
2.CHECK EVAP CANISTER VENT CONTROL VALVE-II
With CONSULT
Check that new O-ring is installed properly
Operation takes less than 1 second
Without CONSULT
Check that new O-ring is installed properly
Operation takes less than 1 second
3.CHECK EVAP CANISTER VENT CONTROL VALVE
With CONSULT
Check that new O-ring is installed properly.
Operation takes less than 1 second.
Without CONSULT
Check that new O-ring is installed properly.
Operation takes less than 1 second.
DRAIN FILTER
Wiring diagram
BCM (BODY CONTROL MODULE)
Wiring Diagram
...
Microphone
Removal and Installation
REMOVAL
Remove the front room/map lamp assembly. Refer to INL-84, "Removal
and Installation".
Detach the microphone connector (A).
Remove the front room/map lamp covers (1), then remove the map lamp
assembly cover (2).
R ...
P0447 evap canister vent control valve
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 ...