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 | See page |
|---|---|---|
| Both low pitched horn and high pitched horn do not sound | HORN fuse | - |
| HORN relay | ||
| Horn button assembly | ||
| Steering pad switch RH | ||
| Spiral cable with sensor sub-assembly | ||
| Instrument panel junction block assembly | ||
| Wire harness or connector | - | |
| Both low pitched horn and high pitched horn sound all the time | HORN relay | |
| Horn button assembly | ||
| Steering pad switch RH | ||
| Spiral cable with sensor sub-assembly | ||
| Instrument panel junction block assembly | ||
| Main body ECU (Multiplex network body ECU) | ||
| Wire harness or connector | - | |
| Low pitched horn sounds but high pitched horn does not sound | High pitched horn assembly | |
| Wire harness or connector | - | |
| High pitched horn sounds but low pitched horn does not sound | Low pitched horn assembly | |
| Wire harness or connector | - |