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Home >> Mazda >> 2000 >> MPV DX >> Repair and Diagnosis >> External Pages >> Different car >> Section 389 (Conventional Brake System) >> Power Brake Unit Inspection >> Power Brake Unit Function Check (Simple Method) >> Step 3
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Step 3

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start the engine.
  2. Depress the pedal with usual force.
  3. If the pedal height does not change, the unit is operating.
  4. Hold the pedal down for about 30 seconds. 
  5. If the pedal height does not change, the unit is operating.