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 |
|---|---|---|
| Engine does not start | ECU power source circuit | |
| Transponder key ECU | ||
| SFI system (for 1ZR-FAE) | ||
| SFI system (for 2ZR-FAE) | ||
| SFI system (for 3ZR-FAE) | ||
| SFI system (for 3ZR-FE) | ||
| Security indicator light malfunction | Security indicator light circuit | |
| ECU power source circuit | ||
| Transponder key ECU | ||
| Upper console panel sub-assembly (security indicator light) | - | |
| Unable to register key | Door courtesy light switch | |
| ECU power source circuit | ||
| Key | - | |
| Transponder key ECU |