Pacifica V6-3.8L VIN L (2005)
The hydraulic fluid control valves within the HCU control the flow of pressurized brake fluid to the wheel brakes during the different modes of ABS
braking and traction control. The following paragraphs explain how this works. For purposes of explanation only, the following diagrams show only
one hydraulic circuit, the Right Front wheel braking circuit.
NORMAL BRAKING HYDRAULIC CIRCUIT AND SOLENOID VALVE FUNCTION (ABS WITHOUT TRACTION CONTROL)
The hydraulic diagram shows the vehicle in the normal braking mode of the base brake hydraulic system (Fig. 5). The diagram shows no wheel spin or
slip occurring relative to the speed of the vehicle. The driver is applying the brake pedal which builds pressure in the brake hydraulic system to engage
the brakes and stop the vehicle.
ABS HYDRAULIC CIRCUIT AND SOLENOID VALVE FUNCTION (ABS WITHOUT TRACTION CONTROL)