subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Knock Sensor Module > < Idle Up Control Valve|Locations
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Idle Up Control Valve: Testing and Inspection

Air Valve

1.

Disconnect vacuum lines and electrical connector.  Remove valve.

2.

Blow from vacuum source side toward actuator side.  No air should pass.

3.

Apply 12V across connectors and blow again.  Air should now flow through valve.

4.

If not as specified, replace valve.

Knock Sensor Module > < Idle Up Control Valve|Locations