The ABS indicator light on my 1993 9000 CSE comes on when staring first
time in the morning, it sometimes stays on while driving off. However,
this might not happen from the following starts during the day.

On Apr 22, 5:00 am, johannes <j... (AT) sizefi-nospam-tter (DOT) com> wrote:
This may be more serious but check the sensors first. Measure the
resistance at the sensor connections for 800 to 1400 ohms. The front
sensor connectors are located on either side of the fish tank. The
rear sensor connectors are beneath the rear seat cushion.

yaofeng wrote:
Thx, but was is the fish tank?

On Apr 25, 3:12 pm, johannes <j... (AT) siz-nospam-efitter (DOT) com> wrote:
I take you meant where? The space behind the engine and in front of
the foot well wall is called the aquarium. Open hood. Remove six or
seven screws on the plastic panel in front of the windshield to reveal
the fish tank.

yaofeng wrote:
Ahh I zeeee

On Apr 23, 3:06 am, yaofeng <yaofengc... (AT) gmail (DOT) com> wrote:

Are you sure this is a problem? My '92 900 always did this (about 1
minute for a cold start) in the 5 years I had it, and I just replaced
it with a '91 which does it as well.

Robobass

robanzellotti (AT) googlemail (DOT) com wrote:
I had a '92 and a '93 9000 (both w/ ABS of course) and neither of them
ever behaved this way. The ABS light should come on at starting and go
off within a few seconds. You should not have to move before the light
goes off. Diagnosing the problem may be tricky until the unit fully
fails. So long as the ABS light does go off eventually I guess I would
just continue to monitor it.

--
-Fred W

robanzellotti (AT) googlemail (DOT) com wrote:
It's quite likely that the ABS is ineffective during the time when the
light is on. I.e. indicators do mean something.

There was one a story when right tank in an passenger airline showed
empty, the captain thought it was a software error, so they opened a valve
to the left tank to satisfy the software. Unfortunately there was a hole
in the right tank, so they lost all fuel. However, they did manage to
glide the plane to a nearby airport, but only got one chance of landing...

Fred W wrote:
The ABS light tends to stay on during the first journey of the day, then
goes off at the next journey.

johannes wrote:
Oh, that's not so good then. I'd have it diagnosed first thing in the
morning by leaving it at the mechanic's overnight. Of course you
realize that as soon as it gets to the mechanic's it will stop acting up
until you bring it back home. ;-)

--
-Fred W