WARNING: This page is about a different car, the 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pinpoint Test 1: The Horn Does Not Sound (Steps 1-2)
Courtesy of MAZDA MOTORS CORP.
Fig 2: Pinpoint Test 1: The Horn Does Not Sound (Steps 3-4)
Courtesy of MAZDA MOTORS CORP.
Fig 3: Pinpoint Test 1: The Horn Does Not Sound (Steps 5-6)