Speaker Inspection: Tweeter

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
Remove the tweeter. (See TWEETER REMOVAL/INSTALLATION .)
Inspect the resistance between positions A and B shown in the figure.

Tweeter resistance

Without Bose®: 3.9-4.7 ohms

With Bose®: 3.4 ohms

Courtesy of MAZDA MOTORS CORP.

Courtesy of MAZDA MOTORS CORP.

If not within the specification, replace the tweeter. (See TWEETER REMOVAL/INSTALLATION .)