Isuzu Workshop Service and Repair Manuals

Hydraulic Unit: Description and Operation
Solenoid Valve Body

Anti-Lock Hydraulic Valve Assembly

COMPONENTS

The anti-lock hydraulic valve assembly contains:
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Isolation valve (normally open)

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Dump valve (normally closed)

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Accumulator

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Reset switch

LOCATION & OPERATION

The anti-lock hydraulic valve assembly is installed in the brake hydraulic system between the proportioning valve and the rear brakes. The two
hydraulic valves are operated by solenoids; the EBCM controls rear brake pressure by controlling current flow through these solenoids.

Hydraulic Fluid Flowing Through Anti-Lock Assembly To Rear Brakes

Normal Operation
During normal braking, hydraulic fluid flows from the master cylinder and proportioning valve through the anti-lock valve assembly to the rear
brakes.