Note
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
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 (Left Headlight) (for Single Beam Headlight) | Headlight beam level control actuator circuit | |
| Headlight ECU sub-assembly LH | ||
| Automatic headlight beam level control system does not operate (Left Headlight) (for Triple Beam Headlight) | Headlight unit LH | |
| Headlight leveling motor LH | ||
| Headlight ECU sub-assembly LH | ||
| Automatic headlight beam level control system does not operate (Right Headlight) (for Single Beam Headlight) | Headlight beam level control actuator circuit | |
| Headlight ECU sub-assembly RH | ||
| Automatic headlight beam level control system does not operate (Right Headlight) (for Triple Beam Headlight) | Headlight unit LH | |
| Headlight leveling motor RH | ||
| Headlight ECU sub-assembly RH | ||
| Initialization cannot be performed | CAN communication system | |
| Headlight ECU sub-assembly LH |