AUTO LEVELING CONTROL MODULE FUNCTION

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•  In order to prevent blinding from oncoming traffic and to improve visibility, the auto leveling control module automatically controls the optical axis direction for optimal illumination based on signals input from the instrument cluster and the auto leveling sensor.
•  If an error signal from the auto leveling sensor or excessive power supply voltage is detected, the auto leveling indicator light is illuminated to warn the driver of a malfunction.

Fail-safe Function

•  The fail-safe function operates when the auto leveling control module detects a malfunction. It also warns the driver of a malfunction by illuminating the indicator light as shown in the fail-safe function table.
•  The fail-safe function controls each part as shown on the fail-safe function table.
Note
•  When the ignition switch is turned to the ON position, the auto leveling control module checks the auto leveling indicator light bulb and illuminates the bulb for 3 s to indicate that there is no malfunction.
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Fail-safe Function Table

Item

Test condition

Fail-safe function

Indicator light

Cancel condition
Battery voltage
High voltage
18.1 V or more power supply voltage detected
Fixes headlights in position where excessive power supply voltage was determined.
Not illuminated
17.5 V or less power supply voltage detected
Low voltage
9.0 V or less power supply voltage detected
9.3 V or more power supply voltage detected
Auto leveling sensor
(Power supply malfunction)
4.6 V or less power supply voltage detected
Fixes headlights in position where excessive power supply voltage was determined.
Illuminated
Normal power supply voltage detected
Auto leveling sensor
(Signal malfunction)
4.75 V or more signal voltage detected
Fixes headlights in position where excessive power supply voltage was determined.
Illuminated
Normal signal voltage detected
0.25 V or less signal voltage detected