With Bose®

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL
DISCONNECTION/CONNECTION.)
Remove the side speaker grille. (See SPEAKER GRILLE REMOVAL/INSTALLATION .)
Remove the tweeter. (See TWEETER REMOVAL/INSTALLATION .)
Verify that the resistance between the tweeter terminals is as indicated in the table.

Fig 1: Checking Resistance Between Tweeter Terminals (With Bose®)
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the tweeter.
Fig 2: Tweeter Terminals Resistance Chart (With Bose®)
Courtesy of MAZDA MOTORS CORP.