The number(s) below refer to the step number(s) on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
1 | Did you review the Horns Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms |
2 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 3 |
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 |
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 |
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 |
6 |
Does the horn sound? | Go to Step 7 | Go to Step 8 |
Test the feed and ground circuits of the inoperative horn for a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. | Go to Step 9 | -- | |
8 | Replace the dual horn assembly. Refer to Horn Replacement . Did you complete the replacement? | Go to Step 9 | -- |
9 | Operate the vehicle within the Conditions for Running the symptom. Does the symptom reoccur? | Go to Step 1 | System OK |