Note
Initialize the headlight swivel ECU assembly (set the zero point of the rear height control sensor sub-assembly in the headlight swivel ECU assembly) after the vehicle height changes due to replacement of suspension components or after performing operations such as removal and reinstallation or replacement of the rear height control sensor sub-assembly.
Initialize the headlight swivel ECU assembly when the headlight swivel ECU assembly is replaced.
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 | Link |
|---|---|---|
| Automatic headlight beam level control system does not operate | Check DTCs | |
| Check fail-safe function | ||
| ECU power source circuit | ||
| Headlight swivel ECU assembly | ||
| Initialization cannot be performed | Check DTCs | |
| CAN communication system (w/o Central Gateway ECU) | ||
| CAN communication system (w/ Central Gateway ECU) | ||
| Headlight swivel ECU assembly |