DESCRIPTION
The dual-note horn system features dual electromagnetic horn units. The horn system includes the following major components
- Horn - The two horns are located on the left side of the engine compartment below the Integrated Power Module (IPM).
- Horn Switch - The horn switch is molded into the driver airbag trim cover.
OPERATION
The horn system operates on battery current received through a fuse in the Integrated Power Module (IPM). The horn system circuit is designed so that the system will remain operational, regardless of the ignition switch position.
The most reliable, efficient, and accurate means to diagnose the horn system requires the use of a DRBIII(R) scan tool and BODY DIAGNOSTIC PROCEDURES . The DRBIII(R) scan tool can provide confirmation that the PCI data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the horns are being sent the proper hard wired outputs for them to perform their functions.
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
In most cases, any problem involving continually sounding horns can be quickly alleviated by removing the horn fuse from the Integrated Power Module (IPM).
| WARNING | Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury. |
The horn switch is molded into the driver airbag. The horn switch can not be serviced separately. For service procedures, refer to AIR BAG CONTROL MODULE (ACM) .