Vacuum loss function inspection
WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
- Start the engine.
- Depress the brake pedal with normal force.
- With the brake pedal is depressed, stop the engine.
- Hold the brake pedal depressed for approx. 30 s .
- If the brake pedal height does not change during this time, the unit is normal.