Description And Operation: Operation

The horn operates on battery current received from a horn relay located in the Power Distribution Center (PDC) through a 20A fuse also located in the PDC. The vehicle operator can control typical horn system signaling through the horn switch within the hub of the steering wheel. When the upper surface of the Driver AirBag (DAB) trim cover is pressed, it provides a hardwired ground path to the Body Control Module (BCM) as a signal to apply voltage to the control coil of the horn relay. When the control coil of the horn relay is activated, voltage is applied to the 20A horn fuse, allowing voltage to be applied to the horn. The horn system circuitry is designed so that the system will remain operational, regardless of the status of the ignition switch.

The hardwired circuits between components related to the horn system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds. For proper wire repair, and connector repair procedures. Refer to STANDARD PROCEDURE . and. Refer to REMOVAL . Refer to INSTALLATION .