transpalette84 said:

I tested two BCUs

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transpalette84 said:

ok with my multimer between fusebox and bcu

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sierrafery said:

If you tested two BCUs and with both the starter works only with that grounded wire there must be some other botch made in the wiring somewhere or on the BCU's earth(which IMO should make other issues too) cos as you see that NO wire is hardwired and the BCU must switch earth on it unless it's immobilised, there might be some issue with the BCU's earth so it's still partially immobilised but your ECU has an invasive "immo off" mod and doesnt need the security signal... or who knows what cos it seems that there are all kind of wiring mods on your vehicle, complex troubleshooting is needed made by somebody who knows exactly how these electronics are working on the D2 which is not possible through a forum... if you want to DIY start studying the description and operation section of all the systems... took me more than 10 years of hard study to know them well

i can't guess from a picture which circuit is that for the ABS without knowing the connector's number and pin but being YG wire it might be for SVS...good luck

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transpalette84 said:

for the abs : it's C0504-3 SLABS
for speed signal, i think it's a old mod/tuning for speed ajustement on dashboard with non regular tire size.

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