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Re: ABS Control unit
At 09:39 AM 12/22/97 -0800, you wrote:
>Here again ... '88 5kCSQW
>I've been dealing with a solid on ABS light for a little while now ...
>so I thought I'd try to resolve it before the trip. I had already
>attempted a swap of the power relay from a working car to no avail.
>Bentley also states that it is important to have the D+ line from the
>alternator connected. I confirmed this voltage looks good last night.
>I checked the resistance of the sensors per Bentley as well ... all 4
>look good. The symptom is that when the car is started the ABS OFF
>light never turns off, so I don't suspect any sensors in any case.
>I'm getting to the point that I'm thinking its a problem inside the
>ABS control box. Has anyone out there delved into one of these? If
>so, are there any fuses or other known failure points inside?
>TIA for any experiences!
>San Jose, CA (USA)
A fellow here in Portland had similar problems with his '87 5ktq. In his
case a bad wheel bearing had enough "slop" (tech. term) to cause the ABS to
stay off. He swapped my known good ABS control unit into his car a couple
of times because he was sure he checked everything else out. I haven't
heard of those ABS boxes failing, but you never know...