Look for connector CNED which should be a square large connector up near the FCV . It should be mounted in a tin bracket with a torx or alan screw holding together. A twisted pair can rub through each other in the wraps. Once you've identified where the short is, you can go after it or run a separate circuit outside of the loom. When measuring, if shorted to itself, disconnect CNED. If short goes open, measuring at conn EA, you know the problem lies in the engine harness. Then you would measure from CNED 13 to CNED15.