2001 Mazda Protege MP3FACTORY OEM SERVICE PROCEDURE

Without Using The SSTS

  1. Perform the "Preparation". See PREPARATION .
    CAUTION: Connecting the wrong Data Link Connector (DLC) terminal may possibly cause a malfunction. Carefully connect the specified terminal only.
  2. Use a jumper wire to short terminal TBS of the DLC to body GND.
    Fig 1: Shorting DLC-2 TBS Terminal To Body Ground
    G01186781Courtesy of MAZDA MOTORS CORP.
  3. Depress the brake pedal, and have an assistant verify that the right front wheel does not turn.
  4. With the brake pedal still depressed, turn the ignition switch on and verify that the brake is released momentarily (approx. 0.5 sec.  ) and that the wheel turns when pressure-reduction operates.
    Fig 2: Identifying Pressure Release Signals
    G01186782Courtesy of MAZDA MOTORS CORP.
  5. Inspect the operation of the remaining wheels in order: right front, left front, right rear, left rear.
    • Replace the ABS HU/CM if wheels do not rotate.
    • Inspect brake piping to ABS HU/CM if operation of the remaining wheel order is not within specified.
    NOTE:
    • If Steps 4 and 5 show correct operation, the following systems are okay:
      • Brake piping to ABS HU/CM
      • Braking system, including ABS HU/CM
      • Electrical system in ABS HU/CM (solenoid, ABS motor, etc.)
    • The following are not inspected with above steps:
      • Input system and harness of ABS HU/CM
      • Intermittent failure
      • Fluid leakage from brake including the ABS HU/CM and master cylinder
  6. Turn the ignition switch off and remove the jumper wire.
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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