1. Does anyone having any idea how credible this source for ABS/STC module
repair is?
http://home.earthlink.net/~vicrocha/...AQ.htm#HowLong
2. I have not had any errors from the car today. I have an appointment
with the Volvo Dealer down the road in about a week, but I'm afraid that if
I cannot keep an error on the system, they may not be able to confirm a
module failure - or any problem at all. It seems like the braking messages
are being erased when the car is restarted.
3. I don't know why this is, but if I turn off the STC system, where I get
the warning light the system is disabled, usually within an engine restart
or later in the drive the car will show all of the previous aforementioned
codes.
4. Is there any place I can get a code translator or a computer scan tool
for reading the special Volvo codes?
Deacon
"OBD" <(E-Mail Removed)> wrote in message
news:427655bb$(E-Mail Removed)...
>
> "Mike F" <"mikef2316()"@allsttream.nett> wrote in message
> news:(E-Mail Removed)...
>> Deacon Eisenhart wrote:
>>>
>>> When I bought the car, I bought a 2 year unlimited mile warranty. I
>>> hope it
>>> all works out and the problems that need fixed are fixed.
>>>
>>> Thank you for the link, I did come across that before and bookmarked it.
>>> It
>>> seems like the Volvo computer is useless technology if one code triggers
>>> another. My car tells me power steering is failed. Why? I'll know
>>> when it
>>> fails when it doesn't work anymore.
>>>
>>> I really hope that somewhere out there, beyond this newgroup, there are
>>> people happily driving these cars without any problems.
>>>
>>> I bought a great christmas CD that I am going to play when things start
>>> lighting up. Maybe it'll help me cope.
>>>
>>> Deacon
>>>
>>> "Deacon Eisenhart" <(E-Mail Removed)> wrote in message
>>> news:MradnVxx--Ent-nfRVn-(E-Mail Removed)...
>>> >I am seeing, usually first, an STC error, tells me to stop safely.
>>> >
>>> > Now is accompanied by the following messages:
>>> >
>>> > ABS Service Required
>>> > STC Service Required
>>> > Power Steering Service Required
>>> > Emission Control Service Required
>>> > Brake Failure, Stop ASAP
>>> >
>>> > I plug my ODBII scanner in and I get code P1633 (Manufacturer Aux
>>> > Input/Outputs). I clear the code with the scanner, and all messages
>>> > go
>>> > away for awhile, sometimes a day. Sometimes an hour.
>>> >
>>> > Everything seems fine, no power loss or other problems. I understand
>>> > this
>>> > computer system uses a CANN system, somehow it multiplexes signals and
>>> > sends them between the computer modules. Someone suggested that
>>> > possibly
>>> > one code could hit a trouble (like STC), and that the data buses can
>>> > possibly flood themselves causing delays in communication with other
>>> > sensors. The delays cause the computer to think other systems are
>>> > down,
>>> > causing the messages on the dashboard.
>>> >
>>> > I suspect a possible vaccuum leak on the brake booster, I hear a
>>> > slight
>>> > hiss - perhaps that is enough to throw the whole system out of whack.
>>> >
>>> > Since so many system seems involved, I also still suspect an
>>> > alternator
>>> > problem as well?!?
>>> >
>>> > Has anybody had the combination of problems?
>>> >
>>> > Not happy with my "new" S80s temper.
>>> >
>>> > Deacon Eisenhart
>>> >
>>
>> When there's a problem with the ABS computer, often the errors involve a
>> problem with the computer reading the wheel sensors. This will then
>> generate an error in all the systems that use wheel speed info, as the
>> ABS computer is the one that reports this info onto the network. This
>> would account for the STC message, and maybe the power steering message,
>> if you have speed sensitive power steering.
>> The brake booster leak is a fairly common problem on those cars as well.
>> The "Emission Control Service Required" message it the equivalent of the
>> check engine light, the code for that will be readable with a generic
>> OBD-II scan tool.
>>
>> --
>> Mike F.
>> Thornhill (near Toronto), Ont.
>>
>> Replace tt with t (twice!) and remove parentheses to email me directly.
>> (But I check the newsgroup more often than this email address.)
>
>
> OBDII code P1633 = Volvo Code ECM-510F = Speed signal missing
>
> It would seem that the ABS ECU is failing or there is a problem with the
> CAN Bus.
>
>