Town & Country Van AWD V6-230 3.8L VIN L SMFI (1998)
Brake Master Cylinder: Description and Operation
With Antilock Brakes
Master Cylinder Assembly
The master cylinder is a standard tandem compensation port design for ABS and non ABS systems. Traction control vehicles use a dual center
port master cylinder. For proper traction control the standard master cylinder must not be used.
A vehicle equipped with Teves Mark 20 ABS with Traction control uses a unique center port master cylinder. If the master cylinder is replaced on
a vehicle equipped with traction control be sure the right type of master cylinder is installed.
A vehicle equipped with four wheel disc brakes (AWD applications) also have a unique master cylinder. The master cylinder used on these
vehicles have a piston bore diameter which is larger then the master cylinder used on the other brake applications.
The primary and secondary outlet ports on the master cylinder go directly to the hydraulic control unit HCU.
A fluid level switch is located in the master cylinder fluid reservoir. The switch closes when a low fluid level is detected. The fluid level switch
turns on the brake warning lamp by grounding the lamp circuit. This switch does not disable the ABS system.
