Brake Line

WARNING: This page is about a different car, the 2016 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Check brake line (tubes and hoses) for cracks, deterioration or other damage. Replace any damaged parts.
Check for brake fluid leakage by depressing brake pedal under a force of 785 N (80 kg-f, 177 lb-ft) for approximately 5 seconds while engine is running.

Fig 1: Checking Brake Fluid Lines And Parking Brake Cables
Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION:
If brake fluid leakage occurs around joints, retighten or replace damaged parts as necessary.