What is VSV in Toyota?

The vacuum switching valve (VSV) which controls the vacuum supply to the actuator is normally closed and passes vacuum to the actuator when it is energized by the ECU. By energizing the VSV vacuum is passed to the actuator, closing the air control valve. This effectively lengthens the intake manifold run.

What is a VSV sensor?

The vapor pressure sensor is plumbed into the vapor pressure VSV, which is sometimes called the three-way VSV. One hose connects the VSV to the charcoal can- ister; another connects it to the fuel tank. When this VSV is electrically shut off, it connects the vapor pressure sensor to the canister.

What does EVAP VSV do?

The PCM closes the CCV mentioned earlier and opens the Bypass VSV, then commands the purge valve (called the EVAP VSV) on and draws a vacuum on the entire system until a specified pressure is met. It then closes the EVAP VSV and monitors the rate of vacuum loss to an expected value.

How do you know if a valve is open?

Open or closed: When the handle of a ball valve is parallel to the valve or pipe, it’s open. When it’s perpendicular, it’s closed.

Can I unplug my charcoal canister?

Now just unplug the pressure sensor and unbolt the Charcoal Canister to pull it all out. Easy peasy! This can easily be done without any modifications in just a few minutes, so everything can easily be put back into place when you need to pass SMOG or Inspection.

How do I know if my charcoal canister is clogged?

If your Evap canister is clogged, you’ll likely notice the Check Engine Light on and a distinct fuel odor in your car. This indicator may also be a leak in the fuel tank or a complete collapse, which must be investigated immediately.

What does a vacuum switch do?

A vacuum switch is an electronic or mechanical device that provides an electrical switching contact function at a defined vacuum gas pressure level. It’s used in many vacuum applications for pressure control purposes and safety interlock functionality.