Vacuum Function Inspection
WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Start the engine.
- Stop the engine after driving the vehicle for 1-2 min.
- Depress the brake pedal with normal force.
- If the first pedal stroke is long and becomes shorter with subsequent strokes, the unit is normal.
- If a problem is found, inspect for damage to or improper installation of the check valve and vacuum hose. After repairing, inspect again.