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From: Colin Stamp on 6 Aug 2010 11:23 Mrcheerful wrote: > Colin Stamp wrote: >> Hi all, >> >> I've got problems with the wife's car ('52 1.4 Fiesta Zetec, no ABS). [snip] > this thread has an answer that makes sense: faulty abs module which is in > between the VSS and the dashboard. > > http://www.fordownersclub.com/forums/index.php?showtopic=2340 > Sadly, there's no ABS on this car. Cheers, Colin.
From: Mrcheerful on 6 Aug 2010 12:02 Colin Stamp wrote: > Mrcheerful wrote: >> Colin Stamp wrote: >>> Hi all, >>> >>> I've got problems with the wife's car ('52 1.4 Fiesta Zetec, no >>> ABS). [snip] > >> this thread has an answer that makes sense: faulty abs module which >> is in between the VSS and the dashboard. >> >> http://www.fordownersclub.com/forums/index.php?showtopic=2340 >> > > Sadly, there's no ABS on this car. > > Cheers, > > Colin. oops, sorry. the symptoms fit otherwise. have you traced the wiring? It would make sense that the vss leads to the main engine ecu and then out to the dash, is there a signal actually reaching the dash? it goes to pin m18 on the ecu
From: Colin Stamp on 6 Aug 2010 15:17
Mrcheerful wrote: > oops, sorry. the symptoms fit otherwise. have you traced the wiring? It > would make sense that the vss leads to the main engine ecu and then out to > the dash, is there a signal actually reaching the dash? it goes to pin m18 > on the ecu I haven't traced it yet because I got really confused yesterday having printed out the wrong circuit diagram. I've checked the signal at the VSS itself, and took out the cluster to check there, but none of the pins had the signals I was expecting and none of the wires were white/blue as the VSS signal is supposed to be. I finally worked out that I had a later cluster and the VSS signal doesn't go there at-all. Presumably the ECU sends speed data via the CAN bus. By the time I'd worked this out, It was too dark to check the signal at the ECU. I'll have to do that tomorrow... So I guess it could still just be wiring from the VSS to the ECU. Fingers crossed... Cheers, Colin. |