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 |
|---|---|---|
| AFS does not operate | Check DTCs | |
| Check fail-safe function | ||
| AFS ECU power source circuit | ||
| AFS ECU (Headlight swivel ECU assembly) | ||
| AFS control cannot be cancelled using AFS OFF switch | AFS OFF switch circuit | |
| AFS ECU (Headlight swivel ECU assembly) | ||
| Combination meter assembly | ||
| Initialization cannot be performed | Check DTCs | |
| LVL terminal circuit | ||
| AFS ECU (Headlight swivel ECU assembly) | ||
| AFS OFF indicator light does not come on when turning the power switch on (IG) | AFS ECU (Headlight swivel ECU assembly) | |
| Combination meter assembly | ||
| Illumination for AFS OFF switch does not come on with tail switch on | AFS OFF switch (Headlight swivel main switch) | |
| Harness or connector | - |
Note
Initialize the AFS ECU (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.
When the AFS ECU (headlight swivel ECU assembly) is replaced, initialization is also necessary.