Symptom Related Diagnostic Procedures

With the engine running at idle and the shift lever in "NEUTRAL" (N), depress the brake pedal and hold a constant foot pressure on the pedal. If the pedal gradually falls away with the constant pressure, the hydraulic system may be leaking. Check the following visually to confirm a suspected leak.
- Master Cylinder Fluid Levels: While a slight drop in the levels occurs with normal lining wear, an abnormally low level, resulting in illumination of the "BRAKE" warning lamp, may mean a leak in the system. The system may be leaking internally or externally.

- Brake Hose and Pipe Connections: If leakage is found, verify torque of fasteners and/or replace the hose or pipe.

- Connecting Brake Components: Inspect for damage, and rebuild or replace as needed.

- Caliper and Wheel Cylinder Boots: If leakage is found, rebuild or replace the assembly . Also, check the service brake pedal travel, brake adjustment and parking brake adjustment.