Description and Operation: Horn

Fig 1: Identifying Horn Components

Courtesy of JAGUAR CARS, INC.

The horn system includes the following:

• Power distribution box fuse 25 (15A)
• Horn relay
• Horn
• Air bag sliding contact
• Steering wheel control switch harness
• Horn switch
• Generic Electronic Module (GEM)

The horn system is designed to sound the horn when the horn switch is operated. The horn relay is supplied voltage at all times through the power distribution box fuse 25 (15A). Operating the horn switch provides a ground circuit to the coil side of the horn relay. In turn, the switch side of the horn relay is closed, allowing voltage to be applied to the horn.