Main Power Relay

Turn ignition off. Using an ohmmeter, ensure there is continuity between terminal Nos. 1 and 3. Ensure there is no continuity between terminal Nos. 2 and 4. Using battery voltage, apply positive lead to terminal No. 1 and negative lead to terminal No. 3. Continuity should be present between terminal Nos. 2 and 4. If relay does not respond as outlined, replace main power relay.