Pinpoint Test B: Vibration When Brakes Are Applied

B1: ROAD TEST VEHICLE
1. Road test the vehicle between 40-80 km/h (25-50 mph) without applying brakes.
Is the vibration present?
- Yes : TEST for noise vibration and harshness.
  Refer to: Noise, Vibration and Harshness (Diagnosis and Testing).
  
  REPEAT road test if necessary.
- No: GO to B2.
B2: CHECK FOR BRAKE VIBRATION
1. Road test the vehicle between 40-80 km/h (25-50 mph) with light and medium application on the brake pedal.
  Is a vibration present?
  - Yes : CHECK the brake caliper mounting bolts and wheel hub nuts and TIGHTEN as necessary. CHECK the balance of all road wheels and tyres and REPAIR as necessary. CHECK the brake discs for excessive wear, runout, thickness variation or cracks. INSTALL new brake discs and brake pads as necessary.
    GO to B3.
  - No : Vehicle is OK.
B3: IS VIBRATION STILL PRESENT UNDER BRAKE APPLICATION?
1. Road test the vehicle between 40-80 km/h (25-50 mph) with light and medium application on the brake pedal.
Is a vibration present?
- Yes : CHECK for wear or failure of steering gear bushings. CHECK for wear or failure of steering gear ball joints. CHECK for wear or failure of front wheel bearings, suspension bushings and ball joints. CHECK for wear or failure of rear wheel bearings, suspension bushings and ball joints. Refer to relevant service information and install new parts as necessary.
- No : Vehicle is OK.