Thanks meltedpanda. I read the first post you linked before I posted and went through the same procedure to no avail. The second post is interesting and I'll have to check my voltages tonight. I know I was only getting 5 volts at the Idle Control Valve when I last checked it, so that seems low. It does function on 12 when I tested it and the idle jumps up to a steady 1100 if I pull the connector off the ICV.

Where in the manual do they show a test procedure for the electronics? I can't find that anywhere.