Headlamp: Adjustments

ALIGNMENT HEADLAMP ALIGNMENT PREPARATION
LH vehicle headlamps are equipped with a bubble level to aid up/down headlamp alignment. The bubble level is used to assist headlamp alignment when compensating for vehicle ride height changes due to heavy luggage compartment loads or vehicle ride height change. The vehicle should always be on a level surface when headlamp alignments are checked or changed. Headlamp alignment should always be first attempted by using the bubble level.

The bubble levels cannot be calibrated. The bubble level adjustments are set by the manufacturer. Horizontal alignment does not ordinarily have to be changed except in the case of body damage or tampering.
1. 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.

ALIGNMENT SCREEN PREPARATION
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.

Headlamp Alignment Measurement Table:

6. Measure the distance from the center of the headlamp bulbs to the floor, or refer to Headlamp Alignment Measurement Table. Transfer measurement to the alignment screen (with tape). Use this line for up/down adjustment reference. Individual vehicles may vary.

Fig.29 Headlamp Alignment Screen:

7. Measure distance from the center line of the vehicle to the center of the headlamp bulbs, or refer to Headlamp Alignment Measurement Table. Transfer measurements to screen (with tape) to each side of vehicle center line. Use these lines for left/right adjustment reference (Fig. 29).

NOTE: There are reference marks on the lens to assist in locating the lamp centers.

Fig.30 Headlamp Alignment Screws:

Fig.31 Headlamp Alignment Screws:

HEADLAMP ADJUSTMENT
(Fig. 29). The low beam hot spot cut OFF should be within 2 inches above/below the horizontal center line, and to the right of the vertical center line. This puts the low beam hot spot in the lower right quadrant of the aiming screen. Occasional stray filament images should be disregarded while verifying aim. Verify the vertical adjustment by checking the high beams to ensure they are centered within +2 inches relative to the horizontal center line. The low beams should be shielded when checking high beams. Do NOT cover the headlamp(s) for extended periods, as the heat may damage them. To adjust headlamp alignment, rotate the alignment screws, (Fig. 30) and (Fig. 31) to achieve the specified pattern.