1986 Oldsmobile Cutlass electronic control module

Besides the check engine lite, are there any driveability issues? I was just curious, did you try the jumper wire techinque to access mil codes?

I haven't looked at wiring circuit for your mil. If you unplug that circuit from the ecm and the lite stays on, I don't think the problem is the ecm. Think positive.

Thanks for the reply!. I have attempted the jumper method, I believe putting a paper clip into the A and B terminals of the ALCL should give me a code 12 three times,indicating the diagnostic circuit is ok, then the trouble code should avail itself by a series of flashes and pauses but I may be wrong on this one. Please let me know if I am. My attempt using this method revealed nothing. As far as driveability issues are concerned, the only thing I've noticed is that the emission odors are a little stonger than before, and it does'nt idle high when I first start it up in the morning like it used to,then I'd kick it down. Also I can't hear it going into closed loop like before,and I don't hear the mixture control solenoid ticking in the carburetor like it used to.

I believe you used the jumper correctly? Between A & B terminals, key on, no crank. It wouldn't even flash a code 12?? In the past, I couldn't get a paper clip to work, so I used a piece of automotive wiring and it worked, then. I don't know why it wouldn't work with the paper clip, for me? I found this wiring info for the mil, cutlass supreme. Part of the troubleshooting info below, didn't quite make sense to me? Maybe it will help you?