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/InstallationOwner Maintenance Precautions
The owner or a qualified service technician should make these vehicle inspections
at the indicated intervals to ensure safe and dependable operation.
Bring any problem to the attention of an Authorized Mazda Dealer or qualified
service technician as soon as possible.
When Refueling
• Brake ...
Speaker [Without Bose®]
Purpose
Converts the audio signal from the audio unit to sound.
Function
Full-range speakers, which can output wide-range sound from low to high frequency,
have been adopted.
Specification
Item
Front door speaker
Rear speaker ...
Hydraulic Variable Valve Timing Control
Outline
Changes the exhaust valve timing according to engine operation conditions
to improve engine output, fuel economy, and emission performance.
Based on each input signal, the PCM determines the optimum exhaust valve
timing according to the engine operation conditions. The P ...