Horn: Testing and Inspection

Horn System Test


On vehicles equipped with airbags, refer to General Information before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury.

Refer to horn system test below. If the horn does not sound, test horn fuse located in the totally integrated power module. If the fuse is blown, replace with the correct fuse. If the horns fail to sound and the new fuse blows when depressing the horn switch, a short circuit in the horn or the horn wiring between the fuse terminal and the horn is responsible, or a defective horn switch allowed the horn to burn out is responsible.

If the fuse is OK, test the horn relay.

If the relay is OK, test the horn.




Continuous sounding of the horn may cause horn failure.

If the horn sounds continually, unplug the horn relay from TIPM.

Horn System Test