Engine Revolution Switch & Relay

1. Start engine and run until it reaches operating temperature.
2. Turn off engine and disconnect E.C.C. 20-pin connector.
3. Start engine and check continuity between terminals No. 7 and No. 12 of E.C.C. 20-pin connector. There should be no continuity below and continuity above approximately 3600 RPM.
4. If not within specification, repair or replace as necessary.