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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 638 (DYNAMIC STABILITY CONTROL SYSTEM)BRAKE FLUID PRESSURE SENSOR INSPECTION
2011 Mazda 3 Mazdaspeed, 2.3 3

Brake Fluid Pressure Sensor Inspection

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Brake Fluid Pressure Sensor Inspection
WARNING: This page is about a different car, the 2011 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • The brake fluid pressure sensor is integrated into the DSC HU/CM and installed to the brake line of LF-RR brake system. Therefore, perform the brake fluid pressure sensor inspection with the SST installed to the brake pipe on the left front wheel.
  1. Turn the ignition switch off.
  2. Loosen the brake pipe flare nut using the commercially available flare nut wrench.
  3. Disconnect the brake pipe.
  4. Remove the clamp and disconnect the brake hose.
    Fig 1: Identifying Brake Hose, Brake Pipe And Clamp
    G05985220Courtesy of MAZDA MOTORS CORP.
  5. Install the SSTs  to the brake pipe as shown in the figure.
  6. Perform air bleeding of the SST  and brake line from bleeder screw A.
    Fig 2: Installing SSTs To Brake Pipe
    G05985221Courtesy of MAZDA MOTORS CORP.
  7. Connect the M-MDS to the DLC-2.
  8. Select the "MCYLI P" PID. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
  9. Start the engine.
  10. Depress the brake pedal, and verify that the fluid pressure value of the SST (gauge) and the value shown on the M-MDS are equal.
    Fig 3: Identifying DLC-2 Connector
    G05985092Courtesy of MAZDA MOTORS CORP.
  11. Remove the SSTs  after the inspection and install the brake hose, clamp and brake pipe to their original positions.
  12. Perform air bleeding of the brake line. (See AIR BLEEDING .)
Fig 4: Brake Hose, Brake Pipe And Clamp With Torque Specifications
G05985223Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

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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.