Aim the headlamp assemblies for proper illumination of the road. Verify the aim whenever you install a new headlamp assembly, or if service or repairs in the front end area may have disturbed the headlamp mounting brackets.

The screen method is preferred for aiming headlamps. If the headlamp is equipped with aiming pads, headlamp aiming may be performed using the alternate procedure.

Headlamp aiming is done with the low beam lamps. The high beam lamps will be correctly aimed if the low beam lamps are aimed properly. If the high beam needs adjustment, follow the screen method using the high beam bulb as the reference for measurements.

Some state or provincial authorities have specific requirements for aiming the headlamps.

The screen method requires an area set up specifically for headlamp aim.

The area should consist of a level surface large enough to allow for a vehicle and an additional 7.62 m (25 ft) as measured from the face of the headlamps to the aiming screen.

The screen should be a wall or other flat surface at least 1.52 m (5 ft) high by 3.66 m (12 ft) wide with a matte white surface well shaded from extraneous light, and 90 degrees to the floor. The screen should be provided with a permanent vertical reference line 0.61 m (2 ft) from the left edge of the screen, 2 laterally adjustable vertical tapes, and one vertically adjustable horizontal tape.

After the aiming screen has been set up and located, paint or tape a reference line on the floor 15.24 m (50 ft) from the vertical reference line on the screen. This line should be perpendicular to the aiming screen and a mark placed at 7.62 m (25 ft) from the screen.

1. Align the left tires of the vehicle with the reference line extending from the screen with the headlamps aligned with the reference line.
2. Remove any snow, ice, or mud from the vehicle.
3. The vehicle should be fully assembled and all other work stopped while the headlamp aiming is being done.
4. The fuel tank must be full.
5. The vehicle should contain cargo or be loaded in order to represent normal vehicle use.
6. The tires should be properly inflated.
7. Rock the vehicle in order to stabilize the suspension.
8. Measure from the floor to the center of the lamp bulb on the vehicle. Some lamps have an aim dot marked on the lens.
9. At the screen, measure from the floor and place the horizontal tape at the measured distance.



10. Measure from the reference line on the floor to the left headlamp bulb centerline.
11. At the screen, measure from the reference line and place the vertical tape at the measured distance.
12. Measure from the reference line on the floor to the right headlamp bulb centerline.
13. At the screen, measure from the reference line and place the vertical tape at the measured distance.
14. Turn ON the headlamps.
15. Adjust the headlamps to the specifications required by state or provincial authorities.



16. This illustration represents the visual optics left (VOL) pattern for left hand drive.



17. This illustration represents the visual optics right (VOR) pattern for right hand drive.



18. This illustration represents all headlamps, except the VOL and VOR.



19. This illustration represents the high beam pattern for all headlamps, including VOL and VOR.