Horn: Description and Operation
CIRCUIT OPERATIONWhen the Body Control Module (BCM) activates the horns, it energizes the horn relay by providing a ground path for the relay coil on circuit X4. Circuit F31 from fuse 6 in the Power Distribution Center (PDC) powers the coil and contact sides of the relay.
When the horn relay energize, its contact close and connect circuit F31 to circuit X2. Circuit X2 feeds the horns. Circuit Z1 provides ground for the horns.
The horn system is powered by circuit F31 from fuse 6 in the Power Distribution Center (PDC). Circuit F31 supplies voltage to the coil and contact sides of the horn relay in the PDC.
When the operator presses the horn switch, a ground path is completed on the coil side of the horn relay through the case grounded switch on circuit X4. The horn relay contacts then closes to connect circuit F31 to circuit X2. Circuit X2 powers the horns. Circuit Z1 provides ground for the horns.
On vehicles equipped with Vehicle Theft Security System (VTSS), the X4 circuit is spliced to the Body Control Module (BCM). Description and Operation