Brake System Diagnosis

BRAKE DRUM VIBRATION DIAGNOSIS
Complete the following steps in order to determine if the front or the rear brakes are causing pulsation with the brakes applied:
1. Drive the vehicle at low speed. Select an area that is away from people and moving traffic (such as a large parking lot).
2. Apply the parking brake.
3. Drive slowly forward for a short distance.
4. Feel for the pulsation.

If you notice the pulsation, inspect the rear brakes.

If you do not notice the pulsation, inspect the front brakes. Refer to Brake Rotor Thickness Variation Check or Brake Rotor Lateral Runout Check or Brake Rotor Tolerance in Disc Brakes.