Good point about the battery drain. So it may be an open. I have gone
through the wiring diagrams. The power from the main fuse comes in on
pin 23 and then goes out to the indicating light on pin 6. If I can
figure how to get the harness off the ECU, I'll check for voltage on
pin 23. I would think I have to have voltage, because if the ECU has
no power, the car wouldn't run. It does run, pretty well actually,
although it appears to be eating gas a little bit, and there is no fast
idle speed when the engine is cold which I would expect.