Lexus GS300/400 (2000 year). Service manual - part 83

I04297

Beam Angle Gauge
(Vertical Alignment)

Acceptable
Range

Bubble

I04298

”0” Mark

(Horizontal Alignment) A

B

Lens

BE–46

–

BODY ELECTRICAL

HEADLIGHT AND TAILLIGHT SYSTEM

2347

1.

ADJUST HEADLIGHT AIMMIMG

(a)

Inspect the headslight aimming.
Do the following items before inspection.

Make sure the body around the headlight is
not deformed.

Park the vehicle on a level spot.

The driver gets into the driver’s seat and puts
the vehicle in a state ready for driving (with a
full tank).

Bounce the vehicle several times.

(b)

Adjust the headlight aimming.

Vertical Alignment:
If the bubble is out of the acceptable range of the
beam angle gauge, adjust it using bolt A.

Horizontal Alignment:
If the edge of the lens does not match ”0” mark, ad-
just the lens using bolt B.

HINT:
After adjusting the headlight in vertical direction, check that the
light has been shifted from the adjusted position in the horizon-
tal direction.

2.

REPLACE HEADLIGHT

(a)

Replace the headlight.

(b)

Inspect the headlight aimming.
Do the following items before inspection.

Make sure the body around the headlight is
not deformed.

Park the vehicle on a level spot.

The driver gets into the driver’s seat and puts
the vehicle in a state ready for driving (with a
full tank).

Bounce the vehicle several times.

I07728

20.9 mm (0.823 in.)

0.4

°

3 m (9.84 ft)

W

V Center

Line

V LH Line

V RH Line

H

H

RH Line

3 cm
(0.57

°

)

LH
Line

W

I04297

Beam Angle Gauge
(Vertical Alignment)

Acceptable
Range

Bubble

–

BODY ELECTRICAL

HEADLIGHT AND TAILLIGHT SYSTEM

BE–47

2348

(c)

Check the headlight aimming.
(1)

Prepare the thick white colored paper.

(2)

Stand the paper perpendicularly and ensure the
distance from it to the head lights is 9.84 ft.

(3)

Ensure that the center line of vehicle and the paper
are at a 90 degree angle as shown in the illustration.
(H line)

(4)

Engine running.

(5)

Draw a horizontal line on the paper where the head
lights of the vehicle are to be.

(6)

Draw a vertical line on the paper where the center
line of the vehicle is to be. (V center line)

(7)

Take an appropriate measure to avoid affecting the
other light. (V RH and LH lines)

NOTICE:

Disconnect the connector of the other light to avoid
heat affection from the light because the outer lens of
the head light assembly is made of synthetic resin.
When connecting the connector again take care not
to wake the aiming out of adjustment.

When covering the headlight, finish it within 3 min-
utes.
(8)

Turn the head lights ON.

(9)

Check that the head lights light up the paper as
shown in the illustration.

(10) When the paper is not lighted up properly, adjust the

lights in the vertical or horizontal direction.

HINT:
As shown in the illustration, adjust aiming of the LH and RH
lights along each vertical line respectively.
(d)

Vertical Alignment:
Adjust the headlight aimming.
(1)

Using adjustment bolt A, adjust the headlight aim-
ing to within the specifiactions.

(2)

Make sure the gauge bubble is within the accept-
able range.

HINT:
If the gauge bubble is outside the acceptable range, check that
the vehicle is parked on a level spot.
Readjust the headlight aiming after parking the vehicle on a lev-
el spot.

I04298

”0” Mark

(Horizontal Alignment) A

B

Lens

BE–48

–

BODY ELECTRICAL

HEADLIGHT AND TAILLIGHT SYSTEM

2349

(e)

Horizontal Alignment:
Adjust the headlight aimming.
If the edge of the lens does not match the paper as shown
in the illustration, adjust the lens using bolt B. (See step
5)

HINT:
After adjusting the headlight in vertical direction, check that the
light has been shifted from the adjusted position in the horizon-
tal direction.

BE01R–06

I01351

Headlight Beam Level Control Actuator

Height Control Sensor

Headlight Beam Level Control ECU

Driver Side Junction Block

 ECU–IG Fuse

 GAUGE Fuse

–

BODY ELECTRICAL

HEADLIGHT BEAM LEVEL CONTROL SYSTEM

BE–49

2350

HEADLIGHT BEAM LEVEL CONTROL SYSTEM

LOCATION



The vehicle shown in this illustration is ”GS400”.



All components of ”GS300” other than the ones used for engine are same as ”GS400”.