Brake ABS Sensor rebuild

Joined
May 27, 2026
Messages
1
Age
60
Location
Aachen, Germany
Bike
Sommer 462, ST-1100
Hi!

my name is Ralf, I am from Germany and have been riding a ST-1100 25 years ago and completed an IBA ride with it. Later on I dumped it into a ditch in Scotland. Sad day ...
I think the ST-1100 was the only vehicle I ever bought new. Everything else I own and owned was pre-owned :)

Went back full circle just now and bought a 1996 ST-1100. It is a bit of a project as the ABS light is on. On top of that the honk did not work (fixed by now), there is some noise from the front, and a bit of water dripping out of the exhaust pipes - just to mention the issues I know of.
Previous owner had a nice luxurious valve installed in the rear wheel. Filling up air there is simple now. But unfortunately this valve is hitting the ABS sensor cable with predictable results: ABS Light on, no error code (has been reset), ABS lights flicker when I turn the front wheel, they don't when I let the back wheel spin ... . So far, so clear (I think - remarks welcome!): rear wheel sensor bad.
Unfortunately I have no access to replacement sensors. I hope I can build one from "raw materials" from China.

There has been something on building an ST-1100 ABS sensor on Facebook - but I don't have access to the full article. Ordered 1GT101DC equivalents in China based on the headline of the article. It will take a while before they get here. Obviously I am not sure whether that's the right type. I will try to put my oscilloscope to work on my front sensor, so I can check in more detail ...

I also used the search, maybe I was too stupid. The article on diagnosing the ABS system was very helpful indeed, but obviously doesn't cover the "build your own sensor" topic.

In other words: I am still clueless Every tip and trick on how to get / build a sensor for the ST-1100 is highly appreciated!

Drive safely,

Ralf
 
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