Note
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
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 |
|---|---|---|
| Sound is not produced. | Power source circuit | |
| Engine oil pressure switch circuit | ||
| "P" position switch circuit | ||
| Stop light switch circuit | ||
| Speaker circuit | ||
| Vehicle speed signal circuit | ||
| Vehicle approaching speaker controller | ||
| Harness or connector | ||
| Even when the engine is started or the shift lever is in P, sound does not stop. | Engine oil pressure switch circuit | |
| "P" position switch circuit | ||
| Vehicle approaching speaker controller | ||
| Harness or connector | ||
| Even when the integration control and panel assembly (vehicle approaching speaker switch) is pressed, sound is not produced or stopped. | Vehicle approaching speaker switch circuit | |
| Vehicle approaching speaker controller | ||
| Integration control and panel assembly (vehicle approaching speaker switch) | ||
| Harness or connector | ||
| The integration control and panel assembly (vehicle approaching speaker switch) indicator does not illuminate or turn off. | Vehicle approaching speaker switch indicator circuit | |
| Vehicle approaching speaker controller | ||
| Integration control and panel assembly (vehicle approaching speaker switch) | ||
| Harness or connector | ||
| The diagnostic tool cannot communicate with the vehicle approaching warning system | Power source circuit | |
| DLC3 circuit | ||
| Vehicle approaching speaker controller | ||
| Harness or connector | ||
| The integration control and panel switch assembly (vehicle approaching speaker switch) does not dim. | Main body ECU (multiplex network body ECU) | |
| Vehicle approaching speaker controller | ||
| Harness or connector | - |