AUTO LEVELING CONTROL MODULE
id091800011000
Purpose
Function
Construction
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Operation
1. The auto leveling control module calculates the amount of vehicle inclination based on the vehicle height signal from the auto leveling sensor when the ignition is switched ON. It also calculates the vehicle speed based on the vehicle speed signal from the instrument cluster to determine whether the vehicle is stopped or being driven.
2. The auto leveling control module calculates the average value of the vehicle inclination amount and the target optical axis after the ignition is switched ON and a headlight on signal is received.
3. The auto leveling control module outputs the target optical axis signal to the headlight leveling actuator.
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Fail-safe
Detection item |
Detection condition |
Fail-safe |
Headlight auto leveling malfunction indicator light |
Recovery condition |
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Headlight auto leveling sensor power supply voltage error signal detected
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18.1 V or more or 9 V or less detected for 10 s or more
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Stopped at current control position
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Not illuminate
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17.5 V or 9.3 V or more detected
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Headlight auto leveling sensor error signal detected
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4.75 V or more or 0.25 V or less detected for 10 s or more
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Stopped at current control position
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Illuminate
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Normal value detected for continuos 5 s
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CAN transmission error detected
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CAN transmission error detected
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Stopped at current control position
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Illuminate
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CAN transmission restored to normal
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Vehicle speed signal error detected
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Error signal received for continuos 5 s, or transmission interruption detected
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Stopped at current control position
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Illuminate
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Normal value detected for continuous 2 s
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Auto leveling control module error detected
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Micro computer malfunction detected
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Stopped at current control position
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Illuminate
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Micro computer reset canceled
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Configuration data error detected
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Stopped at current control position
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Flash*1
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Reading of normal configuration data initiated
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