Ok, I rigged up a harness last night and drove around today testing the current to the idle control valve and EHA. I think the EHA is working fine. The current was fluctuating between 1 and 20 ma. On the idle control valve, I only got minor leakage current (0.14 ma), and it never fluctuates from turning on the ignition through driving around town.
If I didn't have current at the EHA, I'd think it's the OVP relay. However, since I have current at the EHA, but not at the idle control valve, what does that sound like? Is there another relay or fuse somewhere that could be blown?

Dave