Mazda 6 - Headlight Auto Leveling System

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EXTERIOR LIGHTING SYSTEM

T17

Failure Detection Function

Abnormal input detection function

• If the discharge headlight control unit input voltage (916 V) fails to maintain operational voltage (except for

the drop in voltage immediately after the headlights are turned on), the discharge headlight control unit turns off

the headlights for protection or to prevent part operation errors.

• The discharge headlight control unit turns the headlights back on at resumption of normal operational voltage.

Abnormal output detection function

• If there is an abnormality in the output system (detects an open or GND short circuit in harness), the discharge

headlight control unit turns off the headlights for protection or to prevent part operation errors.

• If the discharge headlight control unit turns off the headlights due to an abnormality in the output system, the

discharge headlight control unit will maintain them in the off condition until the light switch is turned again from

off to on.

End Of Sie

HEADLIGHT AUTO LEVELING SYSTEM

A6E811201052T06

Outline

• The optical axis of the headlights adjusts automatically at fixed angles to improve visibility and prevent the

blinding of oncoming traffic when the vehicle changes speed or is under varying cargo and passenger weight

conditions, among other variables.

Structural View

System Diagram

A6E8112T114

1 Auto leveling control unit (main)

2 Auto leveling control unit (sub)

3 Front auto leveling sensor

4 Rear auto leveling sensor

5 Headlight leveling actuator (LH)

6 Headlight leveling actuator (RH)

7 ABS/TCS HU/CM or DSC HU/CM

A6E8112T115