For 1990-2009 cars

1. Run the engine at idle.
2. Position the transaxle in NEUTRAL.
3. Depress the brake pedal and hold a constant foot pressure.
4. If the pedal gradually falls away with the constant pressure, the hydraulic system may be leaking. Perform the following visual inspection in order to confirm any suspected leak:

• | Inspect the master cylinder fluid level. Normal lining wear may cause a slight drop in the reservoir fluid level. An abnormally low reservoir fluid level, causing illumination of the BRAKE warning lamp, may indicate a leak in the system. The hydraulic system may be leaking either internally or externally. Refer to Master Cylinder Diagnosis .

• | Inspect for leaks at the brake pipe and brake hose connections. If leakage exists, verify the torque of the fasteners and/or replace the pipe or hose as necessary.

• | Inspect the connecting brake components for damage. Rebuild or replace the connecting brake components as necessary.

• | Inspect the caliper and wheel cylinder boots for leakage. If leakage is evident, rebuild or replace the components as necessary. Refer to Disc Brakes or Drum Brakes.

- | For FRONT brake caliper leaks, refer to Brake Caliper Overhaul or Brake Caliper Replacement in Disc Brakes.

- | For wheel cylinder leaks, refer to Wheel Cylinder Overhaul or Wheel Cylinder Replacement in Drum Brakes.