Symptom Related Diagnostic Procedures

Brake System Diagnosis:

Test brakes on a dry, clean, reasonably smooth and level roadway. A true test of brake performance cannot be made if roadway is wet, greasy, or covered with loose dirt so that all tires do not grip the road equally. Testing is adversely affected when the roadway is crowned, throwing the weight of the vehicle toward the wheels on one side, or when the roadway is to rough, making the wheels bounce. Test the brakes at different vehicle speeds with both light and heavy pedal pressure. Because of a high deceleration capability, a firmer pedal may be felt at higher deceleration rates.