Acronyms and Abbreviations

4WAL
Four Wheel Antilock
BPMV
Brake Pressure Modulator Valve
CKT
Circuit
DLC
Data Link Connector
DMM
Digital Multimeter
DRP
Dynamic Rear Proportioning
DTC
Diagnostic Trouble Code
DUMP
Dump Valve
EBCM
Electronic Brake Control Module
EHCU
Electro-Hydraulic Control Unit
Infinite
Open Circuit/Unmeasurably High Resistance
ISO
Isolation Valve
LPA
Low Pressure Accumulator
OL
Open Circuit/Unmeasurably High Resistance
2WD
Two Wheel Drive
4WD
Four Wheel Drive
VSS
Vehicle Speed Sensor
WSS
Wheel Speed Sensor
The EHCU is the entire ABS assembly, including the BPMV, the EBCM and combination valve. The BPMV is defined as the hydraulic control (lower) portion of the EHCU. It includes the internal control valves, the electric motor and the pumps. The EBCM is the electronic control (upper) portion of the EHCU. The EBCM mounts to the top of the BPMV. The EBCM is housed in aluminum with a black plastic top.