Hatchback (5HB)

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 following parts:
1. Rear package tray (See REAR PACKAGE TRAY REMOVAL/INSTALLATION .)
2. Trunk covering (See TRUNK COVERING REMOVAL/INSTALLATION .)
3. Trunk end trim (See TRUNK END TRIM REMOVAL/INSTALLATION .)
4. Tire house trim (See TIRE HOUSE TRIM REMOVAL/INSTALLATION .)
5. Trunk side upper trim (See TRUNK SIDE UPPER TRIM REMOVAL/INSTALLATION .)
6. C-pillar trim (See C-PILLAR TRIM REMOVAL/INSTALLATION .)
Disconnect the rear speaker connector. (See REAR SPEAKER REMOVAL/INSTALLATION .)
Inspect the resistance between rear speaker terminals A and B.
Rear speaker resistance

3.24-3.96 ohms

Fig 1: Checking Rear Speaker Resistance (3.24-3.96 Ohms)
Courtesy of MAZDA MOTORS CORP.
- If not within the specification, replace the rear speaker. (See REAR SPEAKER REMOVAL/INSTALLATION .)