2. Check for vacuum by pressing the pedal several times. The pedal travel should decrease with each press.
Checking the system operation
1. With the engine stopped, press the brake pedal several times to let air in.
2. Lightly press the brake pedal and start the engine. If a stable vacuum is created in the brake booster, the pedal should "go" forward.
[The article is based on information from the website www.hondabook.ru]