Data Link Connector: Testing and Inspection

- Circuit Z12 also supplies a ground for the PCM high current drivers.
- If the system loses ground for the Z12 circuits, the vehicle will not operate.
- Circuit F86 splices to supply battery voltage to the heated rear window switch, overdrive switch, vehicle theft alarm module and rear lighting system. Circuit F86 also powers the coil side of the Automatic Shut Down relay and fuel pump relay