2014 Mazda 3 SV, Automatic TransFACTORY OEM SERVICE PROCEDURE

Brake Fluid Pressure Sensor Inspection

  1. Switch the ignition off.
  2. Disconnect the brake pipe from the LF brake hose.
  3. Remove the clip.
  4. Remove the LF brake hose from the bracket.
  5. Detach the brake pipe from the pipe holder.
    Fig 1: Removing Brake Pipe From Pipe Holder
    G09783080Courtesy of MAZDA MOTORS CORP.
  6. Install the SST  to the brake pipe as shown in the figure.
  7. Bleed the brake line and the SSTs  of air. Bleed the air form the SSTs  using bleeder screw A.
  8. Connect the M-MDS to the DLC-2.
  9. Select the "BRK_F_P_R" PID.
  10. Start the engine.
  11. Depress the brake pedal, and confirm that the fluid pressure value of the SST  (gauge) and the value shown on the M-MDS are equal
  12. After the inspection, remove the SSTs  , install the brake hose, clamp, and brake pipe to the original positions, and then bleed the air from the brake line. (See BRAKE HOSE (FRONT) REMOVAL/INSTALLATION .) (See BRAKE FLUID AIR BLEEDING .)
    Fig 2: Installing SST To Brake Pipe
    G09783081Courtesy of MAZDA MOTORS CORP.
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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.