Did you preform the Horns Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Horns

1. Disconnect the inoperative horn from the dual horn assembly.
2. Connect a test lamp between the feed circuit and the ground circuit of the inoperative horn.
3. Depress and hold the horn switch.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 3

Test the feed circuit of the inoperative horn for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

Go to Step 4

Test the ground circuit of the inoperative horn for a high resistance or an a open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

Go to Step 5

Inspect for poor connections at the inoperative horn. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

Go to Step 6

1. Connect a 15 amp fused jumper wire between battery (B+) and the inoperative horn input.
2. Connect another jumper wire between battery (B-) and the inoperative horn ground.

Does the horn sound?

--

Go to Step 7

Go to Step 8

7

Test the feed and ground circuits of the inoperative horn for a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

--

Replace the dual horn assembly. Refer to Horn Replacement .

Did you complete the replacement?

--

Go to Step 9

--

Operate the vehicle within the Conditions for Running the symptom.

Does the symptom reoccur?

--

Go to Step 1

System OK