Vacuum Switching Valve (For Evap) On-Vehicle Inspection

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Emission Control. Lexus Is250, Is220D. Gse20 Ale20

  1. INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM

Vacuum Switching Valve (For Evap) -- On-Vehicle Inspection



1. INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM


    Lexus Is250, Is220D. Gse20 Ale20

  1. Start the engine. Disconnect the vacuum hose shown in the illustration.

  1. Connect the intelligent tester to the DLC3.

  1. Select the following menus: Powertrain / Active Test / Activate the VSV for EVAP Control.

  1. Check that a vacuum occurs at the VSV port.

  1. Exit Active Test mode and reconnect the vacuum hose.

  1. Select the following menus: Powertrain / Engine / Data List / EVAP Purge VSV.

  1. Check operation of the EVAP VSV.

  1. Warm up the engine and drive the vehicle. Confirm that the EVAP VSV is opened.
    If the result is not as specified, replace the VSV, wire harness or ECM.