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Old 11-11-2012, 01:26 PM   #1
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Default Bad ABS/WSS Replacement

I replaced the driver side front wheel bearing a month ago on my 2000 bonneville sle. I dropped it while putting it in, and the abs sensor cover popped off, but it seemed to go back on fine. The new one was a Moog bearing, which seems to be quite good.

Currently, after a couple months, both the left (new) and right (old) abs sensor are setting codes and disabling the ABS. Now, I really only want to replace the ABS sensors if need be. Is this wise, or is there another problem? I think the codes are right given i dropped the new one, and the old one is well....old.

What is a good brand of sensor? I see rock auto carries AC Delco, but i admit I want not to do it twice.

Thanks.

Any advice?
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Old 11-12-2012, 09:26 AM   #2
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You can't replace the sensors as a seperate component, but why are you sure is is the WS sensors? There are 6 or 8 different failures that can set off the ABS warning light. Did you have the car scanned, and if so, what are the codes?
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Old 11-12-2012, 11:10 AM   #3
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I checked the codes on Saturday, and I had for both sides, short/loss of ground. I will rescan it and get the actual codes. Maybe your right?!

Thanks for the reply.
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Old 11-12-2012, 11:37 AM   #4
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I have a scanner that will read ABS codes and it was reading "no signal or open circuit to RH wheel speed sensor". I replaced the RH hub/bearing and the problem did not go away. I used the FSM to determine the two WSS wires run directly from the WSS to the EBCM, and which pins on the EBCM connector were for the WSS wires. Using an ohmeter and a long piece of wire, I determined there was no continuity in either wire. I stripped the insulation from the wires at each end (WSS and EBCM connector) and spliced in a pair of wires running from one to the other. Problem solved.

My point is don't assume it is the WSS until you have further diagnositics to confirm that conclusion.
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Old 12-23-2012, 11:39 PM   #5
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You were right. So, the intermittent ABS/TCS light is a short at the right front connection. My question is now, do i replace the entire line? It looks like this is what is available from Rock Auto. Connects the WSS to the ABS controller. Is it possible to simply strip the pigtail (correct work, or harness?) connector? It looks like a sealed connection... Any pointers?
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Old 12-23-2012, 11:39 PM   #6
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Opps, the code is C1222, signal = 0
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Old 12-24-2012, 02:09 AM   #7
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I just stripped the insulation off each wire about an inch or so from the WSS connector, spliced one end of a new wire on to each bare spot, soldered, covered with shrink tube and taped. Ran the two wires over the engine to the EBMC module, and did the same thing to the two wires about one inch from the EBCM connector. The only tricky part was locating the correct wires at the ECBC module. I have a factory service manual so I was able to determine the correct two.

I haven't had a problem since I did it.
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Old 12-24-2012, 02:12 AM   #8
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With your'* being a 2000 (mine is a 2001) chances are the connections to the EBCM are the same. Let me know if you want me to look it up for you. Send me a PM in case I don't check this thread.
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Old 12-24-2012, 11:46 AM   #9
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PM your email address to me and I will send scanned copies of the wiring diagrams you need.
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Old 12-24-2012, 02:47 PM   #10
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I sent you an email with wiring diagrams for the WSS'* and for the EBCM connector. That will show you which wires you need to tie into. Let me know if you need anything further.
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