Horn Relay Inspection

Disconnect negative (-) cable at battery.
Remove horn relay (included in integration relay) (1) from main fuse box (2).

Fig 1: Removing Horn Relay From Main Fuse Box
Courtesy of SUZUKI OF AMERICA CORP.
Check that there is no continuity between terminal "a" and "b".
If there is continuity, replace relay.
Check that there is continuity between terminals "a" and "b" when a 12 V battery is connected to terminal "a" and "c".
If malfunction is found, replace integration relay.

Fig 2: Horn Relay - Circuit Diagram
Courtesy of SUZUKI OF AMERICA CORP.