WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pinpoint Test 1: Horn Does Not Sound (Steps 1-4)
Courtesy of MAZDA MOTORS CORP.
Fig 2: Pinpoint Test 1: Horn Does Not Sound (Steps 5-8)
Courtesy of MAZDA MOTORS CORP.
Fig 3: Pinpoint Test 1: Horn Does Not Sound (Steps 9-14)
Courtesy of MAZDA MOTORS CORP.
Fig 4: Pinpoint Test 1: Horn Does Not Sound (Steps 15-17)
Courtesy of MAZDA MOTORS CORP.
Fig 5: Pinpoint Test 1: Horn Does Not Sound (Horn Terminal Identification)
Courtesy of MAZDA MOTORS CORP.
Fig 6: Pinpoint Test 1: Horn Does Not Sound (Central Security Module & Horn Relay Terminal Identification)
Courtesy of MAZDA MOTORS CORP.
Fig 7: Pinpoint Test 1: Horn Does Not Sound (Horn Switch Resistance Test)