Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
| Symptom | Suspected Area | Link |
|---|---|---|
| Horn does not sound | HORN fuse | - |
| HORN relay | ||
| Horn button assembly | ||
| Steering pad switch assembly | ||
| Spiral cable sub-assembly | ||
| Instrument panel junction block assembly | ||
| Harness or connector | - | |
| Horn sounds all the time | HORN relay | |
| Horn button assembly | ||
| Steering pad switch assembly | ||
| Spiral cable sub-assembly | ||
| Instrument panel junction block assembly | ||
| Main body ECU (Multiplex network body ECU) | ||
| Harness or connector | - | |
| Low pitched horn operates but high pitched horn does not operate | High pitched horn assembly | |
| Harness or connector | - | |
| High pitched horn operates but low pitched horn does not operate | Low pitched horn assembly | |
| Harness or connector | - |