Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 513 (CONVENTIONAL BRAKE SYSTEM)POWER BRAKE UNIT INSPECTIONPOWER BRAKE UNIT FUNCTION INSPECTION (SIMPLE METHOD)STEP 2
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Step 2
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION 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.
- Start the engine.
- Stop the engine after it has run for 1 or 2 minutes .
- 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.