Did you perform the Horns Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Depress the horn switch.

Do the horns have a harsh tone or buzzing?

Go to Step 3

Go to Symptoms - Horns

Did you find and correct the condition?

Go to Step 7

Go to Step 4

Perform the following for each of the horns:

1. Disconnect the horn connector.
2. Connect a 15-amp fuse jumper wire between the positive battery terminal and the control terminal of the horn.
3. Connect another jumper wire between the negative battery terminal and the ground terminal of the horn.

Does the horn have a harsh tone or buzzing?

Go to Step 6

Go to Step 5

Repair the high resistance in the horn control circuit or the horn ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 7

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Replace the horn. Refer to Horn Replacement .

Did you complete the replacement?

Go to Step 7

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Operate the horns.

Do the horns operate properly?

System OK

Go to Step 1