Wiper

CIRCUIT OPERATION
The windshield wiper system is powered by a 10 Amp fuse located in cavity 15 of the junction block. This fuse is HOT in the ACCESSORY and RUN positions only. Power for the fuse is supplied on the A31 circuit.

The A31 circuit originates at the ignition switch. Power for the A31 circuit is supplied by circuit A1 from the Power Distribution Center (PDC) and protected by a 20 Amp fuse located in cavity 8.

The F13 circuit supplies the power from the fuse in the junction block to the wiper switch, coil side if the intermittent wiper relay, and the coil side of the HI/LOW Wiper relay. This circuit is spliced and also supplies power to the Rear Window Defogger relay, and the Turn Signal Combo Flasher. Both of the relays used in the wiper system are located in the PDC.

The Body Control Module (BCM) controls all functions of the wiper system. This is accomplished through a multi-plexed input from the wiper switch to the BCM on circuit V52.