Hydraulic pressure inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Start the engine. Depress the brake pedal when the vacuum reaches 66.7 kPa {500 mmHg, 19.7 inHg}.

At this time, apply the indicated brake pedal force and if the fluid pressure is within the specification, the unit is normal.

MASTER CYLINDER FLUID PRESSURE SPECIFICATION

Vacuum amount at 66.7 kPa {500 mmHg, 19.7 inHg}
Brake pedal force	Fluid pressure
200 N {20.4 kgf, 45.0 lbt}	7, 350 kPa {7 95 kgf/cm ² , 1, 066 psi} or more