Diesel Data: Automotive Repair

Horn Relay: Testing and Inspection

Power Relays - Relay Test:




1. Remove the power relay from its socket.
2. Check for continuity between the terminals.
^ There should be continuity between the A and terminals when power and ground are connected to the C and D terminals.
^ There should be no continuity between the and B terminals when power is disconnected.

Horn Relay:




^ Horn relay