Horn RH

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

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