Headlamp: Adjustments
Headlamp Alignment Preparation1. Verify headlamp dimmer switch and high beam indicator operation.
2. Inspect and correct damaged or defective components that could interfere with proper headlamp alignment.
3. Verify proper tire inflation.
4. Clean headlamp lenses.
5. Verify that luggage area is not heavily loaded.
6. Fuel tank should be FULL. Add 2.94 kg (6.5 lbs.) of weight over the fuel tank for each estimated gallon of missing fuel.
Headlamp Adjustment Using Alignment Screen
Alignment Screen Preparation
Headlamp Alignment Screen - Roadster:
1. Position vehicle on a level surface perpendicular to a flat wall 7.62 meters (25 ft.) away from front of headlamp lens.
2. If necessary, tape a line on the floor 7.62 meters (25 ft.)away from and parallel to the wall.
3. From the floor up 1.27 meters (5 ft.), tape a line on the wall at the center line of the vehicle. Sight along the center line of the vehicle (from rear of vehicle forward) to verify, accuracy of the line placement.
4. Rock vehicle side-to-side three times to allow suspension to stabilize.
5. Jounce front suspension three times by pushing downward on front bumper and releasing.
6. Measure the distance from the center of headlamp lens to the floor. Transfer measurement to the alignment screen (with tape). Use this line for up/down adjustment reference.
7. Measure distance from the center line of the vehicle to the center of each headlamp being aligned. Transfer measurements to screen with tape.to each side of vehicle center line. Use these lines for left/right adjustment reference.
HEADLAMP ADJUSTMENT
A properly aimed low beam headlamp will project an angular pattern on the alignment screen. The right half of the pattern will be higher than the left half in front of each headlamp. The vertical left edge of the pattern should be 25 mm (1 in.) to the left of the headlamp center line. The horizontal top edge on the left side of the pattern should be 75 mm (3 in.) below the headlamp center line. The high beam headlamps cannot be aligned. The high beam pattern should be correct when the low beams are aligned properly.
Headlamp Alignment Screws:
To adjust headlamp alignment, rotate alignment screws to achieve the specified low beam hot spot pattern.
Headlamp Adjustment Using Alignment Screen
Alignment Screen Preparation
NOTE: Vehicle must be an a level surface.
Headlamp Alignment Screen Screen - Coupe:
1. Position vehicle on a level surface perpendicular to a vertically flat wall 7.62 meters (25 ft.) away from front of headlamp lens.
2. If necessary, tape a line on the floor 7.62 meters (25 ft.) away from and parallel to the wall.
3. From the floor up 1.52 meters (5 ft.), tape a vertical line on the wall representing center line of the vehicle. Sight along the center line of the vehicle (from rear of vehicle forward) to verify accuracy of the line placement.
4. Rock vehicle side-to-side three times to allow suspension to stabilize.
5. Jounce front suspension three times by pushing downward on front bumper and releasing.
6. Measure the distance from the center of headlamp lens (small indentation on clear outer lens in front of low beam) to the floor. Transfer measurement to the alignment screen (with tape). Use this line for up/down adjustment reference.
7. Measure distance from the center line of the vehicle to the center of each headlamp being aligned. Transfer measurements to screen (with tape) to each side of vehicle center line. Use these lines for left/right adjustment reference.
HEADLAMP ADJUSTMENT
A properly aimed low beam headlamp will project an angular pattern on the alignment screen. The right half of the pattern will be higher than the left half in front of each headlamp. The vertical left edge of the pattern should be 25 mm (1 in.) to the left of the headlamp center line. The horizontal top edge on the left side of the pattern should be 63 mm (2.5 in.) below the headlamp center line. The high beam headlamps cannot be aligned. The high beam pattern should be correct when the low beams are aligned properly.
Headlamp Alignment Screws:
To adjust headlamp alignment, rotate alignment screws to achieve the specified low beam hot spot pattern.