Now that the ECM is back online and talking on this BEACHED WHALE Nissan Titan, we have some wiring harness repairs to do.

JustAnswer.com told the owner to CUT ALL SIX 5V Supply wires at the ECM for some reason.
Let's see exactly which wires were cut, verify wiring integrity, and try to put Humpty Dumpty together again.

Will the Titan fire up and DRIVE off my lot under its own power?
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Ivan