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Home >> Mazda >> 2000 >> MPV ES >> Repair and Diagnosis >> External Pages >> Different car >> Section 544 (Conventional Brake System) >> Power Brake Unit Inspection >> Power Brake Unit Function Inspection (Simple Method) >> Step 2
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Step 2

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start the engine.
  2. Stop the engine after it has run for 1 or 2 minutes  .
  3. Depress the pedal with the usual force.
    • If the first pedal stroke is long and becomes shorter with subsequent strokes, the unit is operating.
    • If a problem is found, inspect for damage or improper connection of the check valve or vacuum hose. Repair if necessary and inspect it once again.