Wiper
CIRCUIT OPERATIONThe windshield wiper system is powered by a 30 Amp fuse located in cavity 9 of the Power Distribution Center (PDC). This fuse is HOT at all times.
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. Circuit Z20 is the sensor return ground for the wiper switch to the BCM.