October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Air Control Valve (ACV)

Disconnect ACV harness. Resistance measured between terminals 3 and 4, and terminals 4 and 5 should be 20 ohms.
Warm engine to operating temperature. Ground Blue/White ACV test connector (located near coil). ACV valve will close and engine speed should drop to about 600-650 RPM.