Horn System (Service Information): Operation

The horn operates on battery current received from a horn relay located in the Power Distribution Center (PDC) through a 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 control coil of the horn relay. The horn system circuit 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 , or REMOVAL , or INSTALLATION .