Re: Sequential electrical failures
"Gclanman" <Gclanman@gmail,com > wrote in message
news:e0029ff0-0593-42b2-9969-b97f0493ae71@s8g2000prg.googlegroups,com ...
> On Jan 22, 6:37 am, "Oppie" <bop...@nospam,com > wrote:
>> Grounds were the first thing that came to mind. Second was any exposed
>> connections that might be susceptible to salt (that the cities are
>> sprinkling liberally on the roads this time of year here) whch can cause
>> some strange electrical leakage paths.
>> Oppie
>>
>> "Gclanman" <Gclan...@gmail,com > wrote in message
>>
>> news:5304738c-24da-40b3-add5-bbe71ed5c762@f10g2000hsf.googlegroups,com ...
>>
>> > On Jan 20, 11:06 am, "Bob Shuman" <no_spam_...@sbcglobal,net > wrote:
>> >> Just a suggestion: Check all your grounds too. The lugs/screws/bolts
>> >> to
>> >> the
>> >> frame and/or engine can corrode and cause low voltage to your computer
>> >> and
>> >> give you the symptoms you describe. Also remove and clean the
>> >> connectors
>> >> to
>> >> the computer too. Good luck
>>
>> >> Bob
>> >> ."Gclanman" <Gclan...@gmail,com > wrote in message
>>
>> >>news:11fe2671-5300-4ad3-aefc-054db07e1adc@d70g2000hsb.googlegroups,com ...
>>
>> >> > My 1996 SL2 is having sequential electrical failures. In order: Door
>> >> > locks, Radio, rear window defroster, some of the idiot lights on the
>> >> > dash when the key is in the "on" position (there may be others, but
>> >> > my
>> >> > daughter is the main driver and she may not have mentioned them all
>> >> > to
>> >> > me). Replaced the Ignition switch and that didn't do any good. The
>> >> > Battery is in very good condition, it's been load tested, etc.
>>
>> >> > Anyone encountered this issue? Spoke with the Saturn dealer head
>> >> > service adviser and she said it could be the main wiring harness
>> >> > (she
>> >> > called one of the mechanics and discussed it with him), and there
>> >> > were
>> >> > no burn marks or any signs of anything wrong when the ignition
>> >> > switch
>> >> > was changed out.
>>
>> > Thanks for the tips. I'll check for those possible bad grounds. As far
>> > as the computer, I'm gonna have to read the manual to find out just
>> > where it is.
>
> I'm out in the land of crazies and nuts, i.e. CA, so there's no salt
> on the roads, and the cars' never been anywhere near snow. But I will
> check for corrosion in any case. Would the computer be under or near
> the under hood main fuse block?
After you check for at least the obvious grounds, pull the fuses and check
for corrosion on the terminals. you can also try having the BCM (body
control module) checked. This is the module that is the common element in
everything you mentioned. I have a L series so can't speak for the SL2. A
good garage might be able to connect up a OBDii tool to access the BCM and
exercise the devices in question. Good luck as the BCM is $400 plus
installation and programming.
Oppie