Brake Fluid Level Switch
WARNING: This page is about a different car, the 2003 Acura 3.2TL and 2002 Acura 3.2TL. However, it is still accessible from the selected car via links, so may be relevant.
Remove brake fluid reservoir cap (cap and switch are an assembly). Check that float on cap moves up and down freely. Use DVOM to check for continuity between switch terminals. With float in down position (empty), continuity should be indicated. Turn cap upside-down to move float to up (full) position. In up position, continuity should not exist. If continuity is not as specified, replace reservoir cap.