Operation CHARM: Car repair manuals for everyone.

Brake Pressure Modulator Valve

BRAKE PRESSURE MODULATOR VALVE (BPMV)
The Brake Pressure Modulator Valve (BPMV) also know as the Electro-hydraulic Control Unit (EHCU) is located in the engine compartment and regulates hydraulic pressure in the brake system during an antilock stop.

The BPMV is split into 3 hydraulic channels; right front, left front and rear brakes. Each channel has an isolation valve and a dump valve. The front channels share a low pressure accumulator, attenuator and pump. The rear channel also has a low pressure accumulator, attenuator and a pump. The rear brake channel of the BPMV controls both rear wheels simultaneously.