How do you test Fan relay Honda civic?

To test the fan relay in a Honda Civic, first, locate the relay in the fuse box, typically under the hood. Use a multimeter to check for continuity by removing the relay and testing the pins; there should be continuity between the terminals when the relay is activated. Additionally, you can swap the relay with a similar one in the fuse box to see if the fan operates. If the fan works with the swapped relay, the original relay is faulty and should be replaced.