Operation CHARM: Car repair manuals for everyone.

Idle Up Control Valve: Testing and Inspection

1. Disconnect and remove the VSV from the engine.
2. Using an Ohmmeter, check the resistance between the terminals.

Testing VSV For Open Circuit:






RESISTANCE (COLD): 37 - 44 ohms

3. Check for continuity between the case and either terminal.

Testing VSV For Short Circuit:





4. If windings are grounded to case or terminal resistance is not as specified, replace the VSV.
5. Blow through pipe E and check that NO air flows from pipe F.

Testing VSV Operation - Current Removed:





6. Apply battery current to the VSV and check that air flows through pipe E and F.

Testing VSV Operation - Current Applied:





7. If a problem is found, replace the VSV.
8. Reinstall VSV on the engine and reconnect vacuum hoses.