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ABS dash Light on 850 1994

posted by  lchristel on  Wed Jul 29 11:52 CST 2009
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last visit: Wed Jun 27 19:03 CST 2012
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I have an ABS trouble code 4-2-2 (Return valve for rear brakes,open circuit or shorted.) When I delete the trouble code it always returns after it signals 1-1-1 in socket #3.The ABS light is continually on. Appreciate any suggestions or tips and also I wish to learn wher the return valve is located. Thanks.








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ABS dash Light on 850 1994

posted by  KlausC on  Wed Jul 29 13:27 CST 2009
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last visit: Fri Oct 24 10:15 CST 2014
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The valve is located in the pump body, and you don't even want to consider that failing. A junk yard pump will work, so long as it hasn't been dried out for a long period of time.

More likely, the wiring and or connector need to be examined where it goes to the ABS pump. Unplug it, clean it with a tooth brush and electric spray cleaner, and reseat the plug.

Klaus
--
The more I learn, the more I forget. So why learn?








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ABS dash Light on 850 1994

posted by  lchristel on  Thu Jul 30 07:01 CST 2009
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last visit: Wed Jun 27 19:03 CST 2012
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Thanks Klaus for the info.

The ABS pump looks like its behind the air filter housing and under the brake master cylinder. Is this correct ? What are easiest steps to get at wireing connection? Thanks Leo








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ABS dash Light on 850 1994

posted by  KlausC on  Thu Jul 30 09:49 CST 2009
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Correct. If you cannot see the connection, just remove the air cleaner and all will be exposed.

PS A new pump from the dealer is about $2000.

Klaus
--
The more I learn, the more I forget. So why learn?








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ABS dash Light on 850 1994

posted by  lchristel on  Thu Jul 30 14:04 CST 2009
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last visit: Wed Jun 27 19:03 CST 2012
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thanks Klaus for your help. I appreciate it. Leo







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