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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Front seat belt warning light does not operate | Proceed to "Driver Side Seat Belt Warning Light does not Operate" | |
| Proceed to "Front Passenger Side Seat Belt Warning Light Malfunction" | ||
| Backup Boost Converter (Eco Run Vehicle Converter Assembly)*1 | ||
| Rear seat belt warning light does not operate | Proceed to "Rear Seat Belt Warning Light Malfunction" | |
| Seat belt warning buzzer does not sound | Meter/Gauge system | |
| Seat belt information light does not operate | CAN communication line (w/ Toyota Safety Sense) | |
| CAN communication line (w/o Toyota Safety Sense) | ||
| Combination meter assembly | ||
| Front door courtesy light switch assembly | ||
| Rear door courtesy light switch assembly | ||
| Wire harness or connector | - |
*1: w/ Stop and Start System