Front Side Speaker Inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the side speaker grille. (See SPEAKER GRILLE REMOVAL/INSTALLATION .)
Remove the front side speaker. (See FRONT SIDE SPEAKER REMOVAL/INSTALLATION .)
Inspect the resistance between front side speaker terminals A and B.
Front side speaker resistance

3.24-3.96 ohms

Fig 1: Checking Front Side Speaker Resistance
Courtesy of MAZDA MOTORS CORP.
- If not within the specification, replace the front side speaker. (See FRONT SIDE SPEAKER REMOVAL/INSTALLATION .)