Function Description

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Fig 1: Signal Horn Activation Function

Courtesy of AUDI OF AMERICA, LLC

The Signal Horn Activation -H- is input and evaluated via the Airbag Spiral Spring/Return Spring With Slip Ring -F138- (1) in the Steering Column Electronics Control Module -J527-.
The "horns" information is transmitted from the Steering Column Electronics Control Module -J527- to the Vehicle Electrical System Control Module -J519- via the comfort database.
The Vehicle Electrical System Control Module -J519- controls the Horn Relay -J413-.
The Horn Relay -J413- provides voltage for the High Tone Horn -H2- and the Low Tone Horn -H7-.