Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Horns Diagnostic System Check? | -- | Go to Step 2 | |
2 | Verify the fault is present. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Remove the horn relay from the engine wiring harness junction block. Does the horn stop sounding? | -- | Go to Step 4 | Go to Step 6 |
4 | Connect a test lamp from the control circuit to fused battery positive voltage. Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 8 |
5 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 9 |
6 | Repair the short to fused battery positive voltage in the horn relay output circuit between the engine wiring harness junction block and the left horn or the right horn (w/ RPO V22). Did you complete the repair? | -- | Go to Step 10 | -- |
7 | Repair a short to ground in the horn relay control circuit between the horn switch and the horn relay or in the horn brush/slip ring. Did you complete the repair? | -- | Go to Step 10 | -- |
8 | Replace the horn relay. Did you complete the repair? | -- | Go to Step 10 | -- |
9 | Replace the horn switch. Did you complete the repair? | -- | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
