Circuit Operation

CIRCUIT OPERATION
Four fuses supply power for the Anti-Lock Brake System (ABS); fuses 5, 8 and 14 in the Power Distribution Center (PDC) and fuse 18 in the fuse block. Fuses 5, 8 and 14 in the PDC are connected directly to battery voltage and are HOT all times. Fuse 18 in the fuse block is HOT when the ignition switch is the RUN Position.

In the RUN position, the ignition switch connects circuit A1 from fuse 8 in the PDC with circuit A38. Circuit A38 connects to a bus bar in the fuse block. The bus bar feeds circuit B236 through fuse 18. Fuse 18 is a 2 Amp fuse.

Circuit B236 connects to the coil side of the ABS main relay and the Controller, Anti-Lock Brakes (CAB).

Circuit Z1 provides ground for the CAB. Circuit Z1 connects to cavities B14 and B13 of the CAB.