MOTRONIC -> O2 SENSOR

[Daniel R. Henriksson]

> > I have been inside my ECU and comparing it to the Volvo wiring
> > diagrams i found 11 unused pins, but
> > only five of them were not wired up to anything inside the ECU, so
> > that left 6 pins wired in but with nowhere to go. I boought a Haynes
> > EFI manual (ok its not the most advanced book but good for
> > startingout) and found pin outs for the unit, which is also used on a
> > few BMWs and one or two othor cars, i matched the wiring to the Volvo
> > diagrams and all of them matched up exactly, also given was the
> > function of the
> > othor 6 pins, one of them was OS signal, i have an oxygen sensor which
> > i was going to hook up to an A/F meter, is it possible that the unit
> > will accept signals from an O2 sensor? also one of the othor pins was
> > OS relay driver, ive never seen a relay assosiated with an O2 sensor,
> > what is the function of this? i thought it may be for the preheater?
> > 

Is the Volvo ECU a 0 261 200 012/022 ?
Could you give us the list of the unused pins and their function.

What other cars used the same type of ecu?

My guess is that the O2 sensor function must be activated somehow in the prom.

/Daniel