Mazda 6 Training Manual page 234

Varying Passenger And Cargo Conditions Operation
1. According to the fluctuation of the suspension, the auto leveling sensors installed in the front and rear of the
vehicle send a signal to auto leveling control unit (main).
2. When a difference between two of the signal inputted from the auto leveling sensors is detected, the auto
leveling control unit (main) verifies the vehicle attitude, then calculates the amount of optical ais adjustment
and sends signal to the auto leveling control unit (sub).
3. The auto leveling control unit compares the actual and the required position of the reflector, then inputs a
command signal to the headlight leveling actuator.
1 Zero setting
2 Large passenger or cargo weight
3 Auto leveling control unit (main)
4 Auto leveling control unit (sub)
5 Front auto leveling sensor
6 Rear auto leveling sensor
7 Headlight leveling actuator (LH)
8 Headlight leveling actuator (RH)
Operation when driving
1. While driving with the headlights on, the auto leveling control unit (main) receives an inputted vehicle speed
signal from the ABS/TCS HU/CM or DSC HU/CM unit (referred to as ABS (DSC) HU/CM in this section) and a
signal based on suspension fluctuation from the front and rear auto leveling sensors.
2. Based on the inputted vehicle speed signal, the auto leveling control unit calculates acceleration angle and
verifies the change in vehicle speed. Also, if there is a difference between two signal inputted from the front and
rear auto leveling sensors, the auto leveling control unit (main) unit verifies the actual attitude of the vehicle.
The auto leveling control unit (main) calculates the optical ais adjustment amount based on the condition of
these two signal, and sends signal to the auto leveling control unit (sub).
3. The auto leveling control unit compares the actual and the required position of the reflector, then inputs
command signal to the leveling actuator.
T–18
EXTERIOR LIGHTING SYSTEM
9 ABS/TCS HU/CM or DSC HU/CM
10 Difference between two voltage signals
11 Vehicle attitude
12 Optical ais adjustment amount
13 Optical ais
14 Zero reference
15 High
16 Low
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