Master Cylinder

Vehicles are equipped with a cartridge master cylinder and vacuum booster. Cartridge-type master cylinder has, in addition to standard primary and secondary pistons, a bypass proportioning valve and differential pressure switch.

The cartridge-type master cylinder uses a pressure differential warning switch. This switch lights brake warning light on dash if pressure in either front or rear brake system becomes too low. A fluid level sensor is located in the plastic reservoir of each master cylinder. It is not serviced separately. It consists of a float, magnet assembly and reed switch. The magnet operates the reed switch when fluid is low, and activates a dash-mounted warning light.