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Home >> Subaru >> 2019 >> WRX STI Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Emission Control Systems (Aux. Emission Control Devices) (Except For STI)) >> Leak Check Valve Assembly >> Inspection >> Check Switching Valve

Check Switching Valve

WARNING: This page is about a different variant/trim than selected.
  1. Check the resistance between switching valve terminals.
    G13258752Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Standard
    1 and 5 27+3-2 Ω (when 20°C (68°F))
    31±4 Ω (60°C (140°F))
  2. Check that air is discharged from (B) when air is blown into (A).
    G13258753Courtesy of SUBARU OF AMERICA, INC.
  3. Connect the battery positive terminal to the terminal No. 5 and the battery negative terminal to the terminal No. 1. Check that air does not come out from (B) when air is blown into (A).
    NOTE: The purpose of this inspection is to check the valve movement, and it would be success if a large change of flow can be checked resulting from valve opening/closing. Therefore, it does not indicate a malfunction if a small amount of flow from (B) is detected when the valve is closed.
    G13258754Courtesy of SUBARU OF AMERICA, INC.
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