Technical Barchetta ABS not working

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Technical Barchetta ABS not working

omega3000

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Aug 19, 2015
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Noticed that the ABS-warning light don´t light up when turning the ignition on.
Tried the brakes on a gravelroad. No ABS!
Tried to find some information internet but it seems like everyone have the opposite problem, the warning light stays on.
Have checked fuses but since i miss all documentation to the car I may have missed som fuse somewhere?
The car is manufactured -95.
Any suggestion on how to continue troubleshooting?

Regards Stefan
 
The ABS unit is 265204001 (Bosch-ABS 2SH)
also i have found four reasonable values when measuring the whelsensors. Between 1,6 and 1,7 Mohm
 
Solved.
The earth connection (nr 29 in the diagram I found in the service manual) was bad.
Haven´t seen where it is physically located in the car, the cable dissapears under the ABS unit, but with a separate cable from battery - it works.
 
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