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Anti lock code 4-4-3 850 1994

posted by  someone claiming to be Stefan Knappe on  Sat Mar 1 06:24 CST 2003 [RELATED]

Dear Readers,
the ABS light lights up on my 1994 850 wagon. Reading the codes I get 4-4-3, which translates to "Electrical or mechanical fault in hydraulic modulator pump motor". I investigated the power supply to the pump motor, it is fed by the relay block left to the ABS controller. When I detach the plug from the relay block and hook up the pump directly, the pump motor starts working.
So I guess the relay block or the ABS controller is defective. Is there any way to further check the components with generic test tools? Is there any experience available which of both is more likely to be the culprit?

Thanks in advance for any help,

Stefan






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New Anti lock code 4-4-3 [850][1994]
posted by  someone claiming to be Stefan Knappe  on Sat Mar 1 06:24 CST 2003 >


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