You can trace it back to pin 36 on the PCM per these diagrams:
Factory Powertrain Manual Page 516:
This leads us down the rabbit hole that is the Factory Electrical Troubleshooting Manual. On Page 27-7 & 27-8 they break out the PCM pins and show pin 36, traces to circuit 929 (PK) "pink" wire. This leads us to page 21-1 and then to 151-8 A-10 to locate it right next to the ICM.
C165 in this diagram ... Pink wire in and out of the connector. Cheers!