Purpose, Function
Ensures vacuum required for braking force to compensate for the decrease in intake manifold vacuum applied to the power brake unit caused by the retard intake valve closing.
Construction
The vacuum pump is installed to the rear housing.

For smooth vane rotation, a single-vane type vacuum pump has been adopted which is equipped with an engine oil lubrication passage.

Operation
Because the vacuum pump is directly engaged with the exhaust camshaft, the vane in the vacuum pump rotates together with the exhaust camshaft, and the vacuum chamber is expanded and vacuum is generated.

Vacuum generation mechanism

Vacuum Pump Removal/InstallationPush-Starting
Do not push-start your Mazda.
WARNING
Never tow a vehicle to start it:
Towing a vehicle to start it is dangerous. The vehicle being towed could surge
forward when its engine starts, causing the two vehicles to collide. The occupants
could be injured.
CAUTION
Do not push-start a vehicle that ...
Auto Dimming Mirror
Purpose
The automatic glare prevention rearview mirror prevents the driver from being
affected by light from vehicles at the rear.
Structural view
System wiring diagram
Function
The automatic glare prevention rearview mirror detects the level of the surrounding
li ...
Engine Abbreviations
AAS
Active Adaptive Shift
ABS
Antilock Brake System
ABDC
After Bottom Dead Center
ACC
Accessories
AFS
Adaptive Front Lighting System
ALC
...