Heated Glass Element Relay: Testing and Inspection

Normally open type:

Normally-open Type-Power Relays Test:

1. Check for continuity between the terminals.
^ There should be continuity between the No. 1 and No. 3 terminals when power and ground are connected to the No. 2 and No. 4 terminals.
^ There should be no continuity between the No. 1 and No. 3 terminals when power is disconnected.

Headlight/Rear Window Defogger Relay-Relay Test:

Rear window defogger relay