3. Check CCV For Normal Operation

1. Turn ignition switch to OFF position and disconnect the hose connecting the CCV to the canister.
2. Blow air into the hose and verify that air escapes normally.
3. Turn ignition switch to ON position and jump a wire to chassis ground at the CCV control terminal.
4. Blow air into the hose and verify that air does not escape from the port.
5. Repeat this procedure 4 or 5 times to ensure CCV reliability.

Is CCV working properly? 

Yes: Proceed with ECM problem procedure.

No: Replace it.