Circuit Operation

CIRCUIT OPERATION
PCM Ground
Circuit Z12 connects to cavities A31 and A32 of the PCM. The Z12 circuit provides ground for PCM internal drivers that operate high current devices like the injectors and ignition coil.

Internal to the PCM, the ground circuit connects to the PCM sensor return circuit (from circuit K167).


Battery Feed
Circuit A14 from fuse 6 in the Power Distribution Center (PDC) supplies battery voltage to cavity A22 of the Powertrain Control Module (PCM).