Headlamp Relay: Testing and Inspection
Headlight and Clearance Light Relays Inspection1. Check that there is no continuity between terminal "C" and "D". If there is continuity, replace relay.
2. Connect battery positive (+) terminal to terminal "B" of relay.
Connect battery negative (-) terminal to terminal "A" of relay.
Check continuity between terminal "C" and "D". If there is no continuity when relay is connected to the battery, replace relay.