Fail-Safe Function of Headlight Auto Leveling Control Module
Headlight leveling control module has a fail-safe function which operates as follows.
| Detecting condition | Fail-safe operation | Warning light |
|---|---|---|
| Power voltage supplied to headlight auto leveling control module is higher than 18.5 V | Stops headlight leveling actuator operation. | OFF |
| Power voltage supplied to headlight auto leveling control module is lower than 9 V | Stops headlight leveling actuator operation. | OFF |
| Vehicle speed is 180 km/h or higher | Stops headlight leveling actuator operation. | OFF |
| Voltage supplied to height sensor is lower than 4.6 V | Stops headlight leveling actuator operation. | ON |
| Signal voltage from height sensor is higher than 4.75 V or lower than 0.25 V | Stops headlight leveling actuator operation. | ON |
| Abnormality in headlight auto leveling control module is detected | Resets microcomputer in headlight auto leveling control module. | ON |
| Correction value calculated by headlight auto leveling control module exceeds operation range of headlight leveling actuator | Drives headlight leveling actuator within its operation range. | OFF |