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/InstallationFront Fender Panel Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Front bumper.
b. Front combination light.
c. Front bumper slider.
d. Front over fender.
3. Remove bolts A and fasteners B.
4. Remove bolts C.
5. Remove the front fender panel.
6. Install in the reverse ...
Intermediate Shaft Removal/Installation
WARNING:
The steering column (EPS motor) temperature increases directly after continuous
turning of the steering mechanism which could cause burns if it is touched.
Before performing any servicing, verify that the steering column has cooled
off.
1. Rotate the steering wheel un ...
Instrumentation/Driver Info. Personalization
A personalization function has been adopted which enables the instrument
cluster settings to be changed.
The Mazda Modular Diagnostic System (M-MDS) is required to perform the setting.
Refer to the Workshop Manual for the detailed setting procedure.
Instrument cluster
...