The diagnostic path shifted from antitheft to controller prerequisites. The wiring diagram led to G103, which was physically loose; cleaning the contact faces and tightening.
The interlock solenoid had key-on battery voltage and relied on BCM ground control. Gear-selector, ignition-key and brake-switch inputs were present, and the BCM power and.
An OEM master switch did not help. The main feed could light a test lamp only dimly, while a safe known supply operated the windows. The wire under the driver sill retained.
P0705 and P1702 returned, and range data looked wrong even after range-sensor replacement. Ford's pinpoint note directed attention to tail-lamp ground paths. Only one of six.