Brake Fluid Level Switch Check
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
The brake fluid level switch is normal when the following conditions are met: When the brake fluid level is above "MIN", continuity is detected; and when the level is below "MIN", no continuity is detected.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.