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HOMESERVICE MANUALSMAZDA2008TRIBUTE S SPORT, 4WDREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLSYMPTOM TROUBLESHOOTING (BRAKE SYSTEM)PINPOINT TEST 1: VIBRATION WHEN BRAKES ARE APPLIEDDIAGNOSTIC PROCEDURE
2008 Mazda Tribute s Sport, 4WD

Diagnostic Procedure

2008 Mazda Tribute s Sport, 4WDSECTION Diagnostic Procedure
DIAGNOSTIC PROCEDURE

PINPOINT TEST 1 VIBRATION WHEN BRAKES ARE APPLIED
STEP INSPECTION ACTION
1 ROAD TEST THE VEHICLE - LIGHT BRAKING
  • Road test the vehicle. Warm the brakes by slowing the vehicle from 80 to 32 km/h (50 to 20 mph) using light brake force. At highway speeds of 89-97 km/h (55-60 mph) apply the brake using light pedal force.
  • Is there a vibration/shudder felt in the steering wheel, seat or brake pedal? 
 Yes GO to step 4.
No GO to the next step.
2 ROAD TEST THE VEHICLE - MODERATE TO HEAVY BRAKING
  • Road test the vehicle. At highway speeds of 89-97 km/h (55-60 mph), apply the brakes using moderate to heavy pedal force.
  • Is there a vibration/shudder? 
 Yes GO to the next step.
No The concern is not present at this time.
3 CHECK ABS OPERATION
NOTE:
  • During moderate to heavy braking, noise from the hydraulic control unit (HCU) and pulsation in the brake pedal can be observed. Pedal pulsation coupled with noise during heavy braking or on loose gravel, bumps, wet or snowy surfaces is acceptable and indicates correct functioning of the ABS system. Pedal pulsation or steering wheel nibble (frequency is proportional to the vehicle speed) indicates a concern with a brake or suspension component.
  • Is the vibration/shudder only present on a wet, snowy or loose surface? 
 Yes This is a normal operating condition of the ABS.
No GO to step 5.
4 CHECK THE PARKING BRAKE OPERATION
  • This test is not applicable to vehicles with drum-in-hat type parking brakes. For vehicles with drum-in-hat type parking brakes, proceed to the next test step. For all other vehicles, apply the parking brake to identify if the problem is in the front or rear brake. At highway speeds of 89-97 km/h (55-60 mph), lightly apply the parking brake until the vehicle slows down. Release the parking brake immediately after the test.
  • Is there a vibration/shudder? 
 Yes GO to step 7.
No GO to the next step.
5 CHECK THE FRONT SUSPENSION
  • Check the front suspension. See SUSPENSION SYSTEM .
  • Are all the suspension components in satisfactory condition? 
 Yes GO to the next step.
No REPAIR or INSTALL new components as necessary. See FRONT SUSPENSION . TEST the system for normal operation.
6 RESURFACE THE FRONT BRAKE DISCS
CAUTION:
  • Do not use a bench lathe to machine the brake discs. A bench lathe may cause brake disc on-vehicle lateral runout and brake roughness.
RENDER: 1.0x

NO RELATED

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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.