1. Disconnect the negative battery cable..
2. Remove the rear door trim..
3. Disconnect the rear door speaker connector..
4. Verify that the resistance between the rear door speaker terminals is as indicated in the table.

If not as indicated in the table, replace the rear door speaker.
Without Bose®

With Bose®

Keyless Antenna [Keyless Entry System]
Rear Door Speaker Removal/InstallationSae Standards
In accordance with new regulations, SAE (Society of Automotive Engineers)
standard names and abbreviations are now used in this manual. The table below
lists the names and abbreviations that have been used in Mazda manuals up to
now and their SAE equivalents.
...
Shroud Panel Removal/Installation
CAUTION:
Since the servicing is performed with the hood open, secure the hood using
a piece of wood to prevent it from falling.
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Seal board upper.
b. Front bumper.
c. Front combination light.
d. Sh ...
Front Body Control Module (Fbcm) Configuration (Using Read/Write Function)
NOTE:
When performing configuration, it is necessary to read the vehicle specification
information from the front body control module (FBCM) before replacing it. Connect
the M-MDS to the vehicle and perform vehicle identification before removing
the front body control module (FBCM). ...