Horn HI

Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the front bumper. (Refer to FRONT BUMPER REMOVAL .) (Refer to FRONT BUMPER INSTALLATION .)
Remove the horn HI. (Refer to HORN REMOVAL/INSTALLATION .)
Apply battery positive voltage to horn HI terminal 1A, and connect the horn HI terminal 2A to ground as shown in the figure, and then verify that the horn HI sounds.

Fig 1: Applying Battery Positive Voltage To High Horn Terminal 1A
Courtesy of MAZDA MOTORS CORP.
- If the horn HI does not sound, replace the horn HI. (Refer to HORN REMOVAL/INSTALLATION .)