Hombre S Regular Cab 4WD V6-4.3L (1999)
Hydraulic Control Assembly - Antilock Brakes: Description and Operation
Brake Pressure Modulator Valve
The Brake Pressure Modulator Valve (BPMV) is part of the EHCU. The BPMV is the hydraulic portion of the EHCU. The EBCM controls the
BPMV. The BPMV is split into the following three hydraulic channels:
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Left front
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Right front
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Rear
Each channel has an isolation valve and a dump valve. The front channels share a low pressure accumulator, attenuator, and a pump. The rear channel
shares use of the pump, but uses it's own low pressure accumulator and attenuator.
Electro-Hydraulic Control Unit
The Electro-Hydraulic Control Unit (EHCU) is located in the left hand side of the engine compartment. The EHCU assembly includes the Electronic
Brake Control module (EBCM) and the Brake Pressure Modulator Valve (BPMV).The EHCU regulates hydraulic pressure in the brake system
during an antilock stop.
