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 |
|---|---|---|
| Automatic headlight beam level control system does not operate | Check DTCs | |
| Check fail-safe function | ||
| Headlight leveling ECU power source circuit | ||
| Headlight beam level control actuator circuit | ||
| Headlight leveling ECU assembly | ||
| Initialization cannot be performed | Check DTCs | |
| CAN communication system | ||
| Headlight leveling ECU assembly |