Question about 1993 Subaru Legacy

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92 AWD, My hydraulic actuator on my ABS hums loud enough to hear from inside the car. It keeps humming with the car turned off. I have to disconnect the battery when I park to avoid running the battery down. Can I just disconnect the wires leading to it? Or do I have to get a diognostic evaluation?

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Is it the pump motor of the abs hydraulic control unit making the noise? If so it's possible a relay is stuck closed supplying power to the pump even when the car is off. There should be no power to pump with car off. Would be an easy fix if so.

Posted on Oct 18, 2008

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Disconnecting the wires may consequently cause non function of ure vehicle speed reading as the system is dependant on your wheel speed suplied by ure abs speed sensors, it might also result in non starting depending on wheather or not the abs ecu is a main ecu or not, i strongly suggest you get hold of a proper wiring diagram and get sum one clued up to rather bypass the system by briging the concerned cercuits the proper way,

Posted on Jul 22, 2008

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