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International Automotive Technicians Network
Re: Low Brake Pedal - ABS Unit?
Posted to Technical Discussion Forum on 12/5/2023

When the ABS leaks internally, it lets fluid go into the dump section of the unit. In some ABS units, there is a hole in the cavity of the dump valve and you can insert a thin wire inside and feel if the piston is moving back when the pedal is pushed.

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