Caliber L4-2.4L (2009)
Brake Proportioning/Combination Valve: Description and Operation
Description
DESCRIPTION
NOTE: Only vehicles without antilock brakes have proportioning valves. Vehicles with antilock brakes have Electronic Variable Brake
Proportioning (EVBP) that is built into the Integrated Control Unit (ICU).
On the non-antilock master cylinder (1), two screw-in proportioning valves (2, 3) are screwed directly into the rear brake outlet ports. The chassis brake
tubes leading to the rear brakes attach to the outlets of the proportioning valves. One proportioning valve controls each rear brake.
The proportioning valves are not identical and cannot be interchanged. The proportioning valve that threads into the primary port (3) has M10 x 1
threads going into the master cylinder (1). The proportioning valve that threads into the secondary port (2) has M12 x 1 threads going into the master
cylinder (1).
