Mazda RX-8 2004 - Page 457

LIGHTING SYSTEMS
09–18–7
09–18
HEADLIGHT AUTO LEVELING SYSTEM OPERATION
CHU091801052S09
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 the auto leveling control module.
2. When a difference between two of the signals input from the auto leveling sensors is detected, the auto leveling
control module verifies the vehicle attitude, then calculates the amount of optical axis adjustment. The auto
leveling control module compares the actual and required positions of the reflector, then inputs a command
signal to the headlight leveling actuator.
Operation When Driving
1. When the auto leveling control module detects the vehicle is running at a constant vehicle speed between 30—
180 km/h for 3 s continuously while the headlights are on, the average value of the vehicle attitude during the
period is calculated and the optical axis is adjusted. (The adjustment control is operated only once per each
period of driving.)
Note
• When the ignition switch is turned to the ON position, it is normal to hear the headlight leveling actuator
operating for a few seconds, as it verifies system operating conditions.
End Of Sie
ZERO SETTING LARGE PASSENGER OR CARGO WEIGHT
OPTICAL AXIS
OPTICAL AXIS
OPTICAL AXIS
ADJUSTMENT
AMOUNT
HIGH
LOW
ZERO
REFERENCE
HIGH
LOW
ZERO
REFERENCE
FRONT AUTO
LEVELING SENSOR
REAR AUTO
LEVELING SENSOR
HIGH
LOW
ZERO
REFERENCE
HIGH
LOW
ZERO
REFERENCE
VEHICLE
ATTITUDE
ABS HU/CM
OR
DSC HU/CM
INSTRUMENT
CLUSTER
FRONT AUTO
LEVELING SENSOR
REAR AUTO
LEVELING SENSOR
AUTO LEVELING CONTROL MODULE
DIFFERENCE BETWEEN
TWO VOLTAGE SIGNALS
VEHICLE ATTITUDE
OPTICAL AXIS
ADJUSTMENT AMOUNT
HEADLIGHT LEVELING
ACTUATOR (LH)
HEADLIGHT LEVELING
ACTUATOR (RH)
(1) (1)
(2) (2)
CHU0918S101