Each Transmission/Transaxle is assigned a specific Mazda type code. The code can be broken down as follows:

Transmission/Transaxle Features
Transmission/Transaxle SSTDifferential [C66 M R]
Purpose, Function
The differential absorbs the rotation speed of the inside and outside wheel
of a wheel set when the vehicle is cornering.
Construction
Operation
Driving in a straight line
Cornering
...
Front Body Control Module (Fbcm) Removal/Installation
CAUTION:
If configuration is not performed when the front body control module (FBCM)
is replaced with a new one, the vehicle specification information is not stored
in the front body control module (FBCM) and the system will not operate normally.
When performing configuration, ...
Generator Control [Skyactiv G 2.0]
Outline
Idling stability has been improved by optimum control of generator voltage
according to engine operation and electrical load conditions.
The PCM determines the engine operation and electrical load conditions based
on the input signals from each control part and controls ...