Mitsubishi Evolution X. Manual — part 101

LIGHTING

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CHASSIS ELECTRICAL

54A-7

HEADLIGHT MANUAL LEVELING SYSTEM

The beam direction of the headlights changes according to the
number of passengers and the amount of load. The headlight
manual leveling function is a system that allows the driver to
change the direction of headlight beam so that the drivers of
oncoming cars are not dazzled by the headlights. The headlight
leveling switch allows changing the direction in five steps: 0 to
4.
NOTE: As the position value of headlight leveling switch
increases, the direction of the headlight becomes lower.

RELATIONSHIP BETWEEN THE SWITCH POSITIONS AND THE NUMBER OF
PASSENGERS/LOADS

NOTE:

•

Each switch position is for reference. In each switch position, when the headlight direction is still too high,
turn the switch to a position that is one-level higher.

•

Before the adjustment of beam height, set the switch to the 0 position (beam direction is at the uppermost
position).

•

After unloading passengers or luggage, always return the switch to the 0 position.

AC608421 AB

Headlight leveling
switch

Passenger and load

One or two
passengers

Five passengers

Five passengers
and heavy loads

Driver and heavy
loads

Switch position

AC508573

AC508574

AC508591

AC508592

LIGHTING

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CHASSIS ELECTRICAL

54A-8

OPERATION

1. The headlight leveling switch increases the

resistance as it is turned from 0 to 4. Turning the
headlight leveling switch changes the voltage at
point A. When the headlight leveling switch is
turned from 0 to 4, the voltage at point A
decreases. Upon detection of this voltage change,
the headlight leveling unit turns the motor to lower
the beam direction. At this time, the resistance of
the variable resistor in the headlight assembly
changes, and the voltage at point B decreases
gradually. When the voltages at points A and B
become equal, the headlight leveling unit stops
the motor.

2. Turning the headlight leveling switch from 4 to 0

increases the voltage at point A, and then the
headlight leveling unit turns the motor in the
direction opposite to that mentioned in Item 1,
increasing the voltage at point B. When the
voltages at points A and B become equal, the
headlight leveling unit stops the motor.

3. The headlight leveling unit detects voltage

changes caused by headlight leveling switch
operation, and turns the motor to change the
directions of the headlight reflectors for the
adjustment of the headlight beam direction.

AC302836

AC314086AB

Variable resistor

Headlight
leveling
unit (LH)

Headlight
leveling
unit (RH)

CPU

2 3

ILL

CPU

Fuse

Headlight
leveling
switch

Variable resistor

Motor
drive
circuit

Voltage
comparison
circuit

Motor
drive
circuit

Voltage
comparison
circuit

LIGHTING

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CHASSIS ELECTRICAL

54A-9

INTERIOR LIGHT

M2544300400351

CONSTRUCTION DIAGRAM

AC709153

Rear dome light

Front dome light
(Front dome light / reading lights)

Luggage compartment light

AC709131

Ignition key cylinder
illumination light

Center console
down light

LIGHTING

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CHASSIS ELECTRICAL

54A-10

• A front dome light, installed to the front part of the

roof, has been equipped with the lens-push type
front dome light / reading light which can be oper-
ated easily from the driver's and front passen-
ger's seat, offering excellent operability for
turning on and off the light.

• The rear dome light, which illuminates the rear

passenger's seat, is installed above the rear seat.
<Vehicle without sunroof>

• The luggage compartment light is installed to the

upper part of the luggage compartment.

• An ignition key cylinder light has been added to

the ignition key cylinder. <Vehicle without KOS>

• The center console down light has been installed

to the upper surface of the center lower box.

• The dimmer interior light control function and igni-

tion key cylinder illumination light control function
have been adopted for the interior light (Refer to
Function and Control by ETACS-ECU

P.54A-10

SPECIFICATIONS