Technical abs sensors

[judithsandilands]

Hi everyone my mot is coming up soon and my abs warning light is coming on intermittently sometimes when i drive over a bump etc. I know it will fail mot if still on Have had abs checked and working ok and after reading other posts i should be checking and cleaning sensors . Has any one got some diagrams of where they are and what to do Any help would be greatly appreciated Fiat marea weekend year 2000

 

[AnfielRed118]

Similar thing happened with mine. After advice i took the rear brake drums off and if you look the wheel bearing has what appears to be teeth on the outer edge. Above this is a small probe that sticks out. This is what i cleaned and problem solved.

 

[judithsandilands]

Similar thing happened with mine. After advice i took the rear brake drums off and if you look the wheel bearing has what appears to be teeth on the outer edge. Above this is a small probe that sticks out. This is what i cleaned and problem solved.

Thanks for that what did you clean them with and are the sensors only at the rear i dont know that much about cars as you can tell

 

[AnfielRed118]

There will be sensors at the front and the rear. Check the gap between the sensor and the rotor. The front gap should be 0.645 - 1.305mm, the rear should be 0.06 - 1.18mm. These gaps cannot be adjusted by the way. To clean i just used some WD40 on a rag to clean them up.