Horn Inspection

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the front bumper. (See FRONT BUMPER REMOVAL .) (See FRONT BUMPER INSTALLATION .)
Remove the horn. (See HORN REMOVAL/INSTALLATION .)
Apply battery positive voltage to horn terminal A, and connect the horn retaining bolt to ground as shown in the figure, and then verify that the horn sounds.

Fig 1: Connecting Horn Retaining Bolt To Ground
Courtesy of MAZDA MOTORS CORP.
- If the horn does not sound, replace the horn. (See HORN REMOVAL/INSTALLATION .)