2000 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE

Brake Fluid Pressure Sensor Inspection

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch to the ON position, then measure the voltage between brake fluid pressure sensor terminal C and ground.
    • If there is any malfunction, inspect the wiring harness between brake fluid pressure sensor terminal C and DSC HU/CM terminal C, then repair or replace if necessary.

    Standard voltage 

    1. 4.75-5.25 V 
    Fig 1: Identifying Brake Fluid Pressure Sensor Terminals
    G03702468Courtesy of MAZDA MOTORS CORP.
  2. Measure the voltage between brake fluid pressure sensor terminal A and the ground.
    • If there is any malfunction, inspect the wiring harness between brake fluid pressure sensor terminal A and DSC HU/CM terminal E, then repair or replace if necessary.

    Standard voltage 

    1. 0 V 
  3. Turn the ignition switch off.
  4. Install the SSTs  to the master cylinder.
    NOTE:
    • Install the SST (49 D043 002) to the master cylinder using a commercially available flare nut wrench.
      • Flare nut across flat: 12 mm {0.47 in}
  5. Bleed the air from the SSTs  and the brake line. (Bleed air from the SSTs  through air bleeding valve A.)
    Fig 2: Installing SST To Master Cylinder
    G03702469Courtesy of MAZDA MOTORS CORP.
  6. Connect the WDS or equivalent to the DLC-2.
  7. Select the MCYLIP PID.
  8. Start the engine.
  9. Depress the brake pedal, and confirm that the fluid pressure value of the SST  (Gauge) and the value shown on the WDS or equivalent are equal.
    • If the fluid pressures are different, replace the DSC HU/CM.
    Fig 3: Identifying Data Link Connector-2
    G03702470Courtesy 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.

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