Tony,
Further harness checks have revealed PCM harness worn through sheath and insulation on two wires. This happened where the harness squeezes between engine lift hook and A/C tube. When she went down it was a hot day, A/C full on, heavy condensation, wet and bare aluminum on copper. Bad combination.
The A/C tube does not test out to be grounded so these two wires only shorted to each other. Players are:
Pin 90, 7-PC28 (Yellow)
feeds TPS, fuel tank press. transducer, exhaust pressure transducer (didn't know we had that)
Pin 97, 95-OC28A (green/yellow) seems to be one of several parallel feeds to PCM relay. Can't quite decipher what it does.
Would the combination of these two cause PCM failure?
After a good clean and re-wrap we'll see if this is the problem or just an incidental find along the way.
