1996 Eagle Vision w/ Check Engine codes 12 and 43

[chlfan]

I have a 1996 Eagle Vision, 3.5 L that just gave me the following codes:

12 (battery or computer recently disconnected)
43 (peak primary coil current not achieved w/in max dwell time
-OR- cylindar misfire -OR- problem in power module to logic module interface)

The check engine light came on as I was driving home from work but the vehicle drove and sounded fine with no problems. When I got home I did the ignition switch sequence of ON-OFF-ON-OFF-ON to get the codes.

I am suspecting the power/connection problem since that is the common one between the two codes (12 and 43) I received. Where do I find the power module and logic module interface?

Thoughts please-

Many thanks-