In severe collisions such as those described previously in "SRS Air Bag Deployment Criteria", the applicable SRS air bag equipment will deploy. However, in some accidents, the equipment may not deploy depending on the type of collision and its severity.
Limitations to front/near front collision detection:
The following illustrations are examples of front/near front collisions that may not be detected as severe enough to deploy the SRS air bag equipment.

Limitations to side collision detection:
The following illustrations are examples of side collisions that may not be detected as severe enough to deploy the SRS air bag equipment.

(With Front Passenger Occupant Classification System)
Limitations to roll-over detection:
The following illustration is an example of an accident that may not be detected as a rollover accident. Therefore, the front seat belt pretensioners and curtain air bags may not deploy.

SRS Air Bag Deployment Criteria
Front Passenger Occupant Classification System
(Some models)Mazda 6 Owners Manual: Power brake unit inspection
Warning
The following inspection methods are the simple inspection methods
to judge the function of power brake.
If there is malfunction in power brake unit, replace the power
brake unit as a component.
Power Brake Unit Function Check (Simple Method)
Step 1
1. With the engine stoppe ...
Mazda 6 Owners Manual: Gracenote Database
When a USB device is connected to this unit and the audio is played, the album
name, artist name, genre and title information are automatically displayed if there
is a match in the vehicle's database compilation to the music being played. The
information stored in this device uses database inf ...