The numbers below refers to the step numbers on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
DEFINITION: This diagnostic procedure is for use with systems that have multiple horns in which one of the horns is inoperative. | |||
1 | Did you perform the Horns Diagnostic System Check? | Go to Step 2 | |
2 | Depress the horn switch. Do all of the horns operate? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 7 |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 8 |
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 11 | Go to Step 6 |
6 |
Does the horn sound? | Go to Step 9 | Go to Step 10 |
7 | Repair the open or poor connection in the horn control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 11 | -- |
8 | Repair the open or poor connection in the horn ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 11 | -- |
Repair the high resistance in the horn control circuit or the horn ground circuit of the horn. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 11 | -- | |
10 | Replace the inoperative horn. Refer to Horn Replacement - Left Side or Horn Replacement - Right Side . Did you complete the replacement? | Go to Step 11 | -- |
11 | Operate the horns. Do the horns operate properly? | System OK | Go to Step 1 |