ABS LIGHT VOLVO 850

My ABS WARNING LIGHT HAS BEEN COMING ON INTERMITTENTLY FOR A WHILE NOW AND
A SLIGHT MOVEMENT OF THE IGNITION KEY PUTS IT OUT.WHEN IT IS SHOWING ALL
LIGHTS SIDE/INDICATORS BECOME INOPERATIVE.I TOOK IT ON A GRAVEL ROAD THIS
MORNING AND THE ABS IS PHYSICALLY WORKING WHEN LIGHT IS OFF BUT NOT WHEN
LIGHT IS ON.I DID THE DIAGNOSTIC TESTING AS PER HAYNES MANUAL AND IT
SHOWED 1 1 1 NO FAULT. ANY CLUES/ADVICE WOULD BE WELCOME.
CHEERS
CHARLIE

 

Using all caps is very ANNOYING and hard to read. Your problem was
discussed in detail in August. For the complete discussion go to:

http://groups.google.com/groups?hl=en&lr=&threadm=14630-4116FCC2-21@sto
refull-3255.bay.webtv.net&rnum=1&prev=/groups%3Fas_q%3DABS%2520light%2520
Volvo%26safe%3Dimages%26as_ugroup%3Dalt.autos.volvo%26as_drrb%3Db%26as_mi
nd%3D1%26as_minm%3D1%26as_miny%3D2004%26as_maxd%3D7%26as_maxm%3D10%26as_m
axy%3D2004%26lr%3D%26num%3D100%26hl%3Den

They key reply was:

The ignition switch fails and keeps these circuits unenergized. Try
moving the key the smallest amount.

Or just replace it. http://www.volvospeed.com/Repair/ignit_switch.htm --
Mike F.
Thornhill (near Toronto), Ont.

 

Thanks very much (sorry about the caps.)this seems to be spot on.

Cheers

Charlie (Edinburgh)