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Home >> Mazda >> 2019 >> 6 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Conventional Brake System) >> Power Brake Unit Inspection >> Using SST >> Vacuum Loss Inspection
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Vacuum Loss 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.
  1. Start the engine.
  2. Depress the brake pedal with a force of 200 N {20.4 kgf, 45.0 lbf}.
  3. Stop the engine when the vacuum gauge reading reaches 68 kPa {510 mmHg, 20 inHg} with the brake pedal depressed.
  4. With the engine off, observe the vacuum gauge for 15 s.
  5. If the gauge has dropped 3.3 kPa {25 mmHg, 0.97 inHg} or less, the unit is normal.