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.

2002 Mazda 626 ES, AutomaticFACTORY OEM SERVICE PROCEDURE

Dual Proportioning Valve Inspection: Notes

Connect the SSTs to the brake pipes as shown in the figure.
Bleed the air from the brake system.
Measure the fluid pressure of the master cylinder and the rear brake.
- If not within the specification, replace the dual proportioning valve.
  
  Fig 1: Connecting The SSTs
  Courtesy of MAZDA MOTORS CORP.

Factory Service Tools

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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.

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