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I thought I would relate the (hopefully) final chapter in the saga.
I installed the new alternator and rebuilt FICM and it started right up in 30 degree weather but ran rough and now has a P0274 high circuit #5. I gave up at that point and had the thing towed home to my tool box and equipment. My first thought was that I had bent a pin in the module. Pulled the module off and checked it all looked well. I then checked for chafing on the loom and to make a long story short finally pulled the wiring harness out and checked it on the work bench. I actually checked and cross checked every wire in it with an ohm meter. I verified that every injector plug contact had continuity to a contact in a module plug. I diagrammed it out to verifiy that there were no internal shorts. Two hours at the bench.
Started it up and still dead hole and P0274.
Module back off and checked the continuity and resistance of the injector coils at the module plugs. All coils have continuity and resistance is within 0.6 to 0.7 on all. Being reasonably certain at this point that everything downstream of the module is checking out I contacted Ed at FICM repair and he is sending out another module. Apparently the new logic board is bad.
Once again I have verified the true-ism that just because it is new does not mean it is good.
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Linear Mode
