Headlamp Beam Adjustment

Headlamp Beam Adjustment Components:

Headlamp Beam Adjustment Diagrams:

Locations of components

7 Earthing point
On the radiator cross-member

11 Full beam filament
In the left-hand and right-hand headlamps

12 Dipped beam filament
In the left-hand and right-hand headlamps

22A Fuse holder
In the electrical distribution box, in the engine compartment

47 Combined instrument
On the fascia

152C 29-pole black connector
In the electrical distribution box in the engine compartment, on the left-hand wheel housing The connector is accessible from the interior of the car.

280 Headlamp beam adjustment motor
At the left-hand headlamp

281 Headlamp beam adjustment motor
At the right-hand headlamp

282 Switch for headlamp beam control
On the fascia, to the left of the steering column

Operation
Some models for certain markets are equipped with a headlamp beam adjustment system. A switch on the fascia enables the driver to change the vertical alignment of the head lamps, so that they will not dazzle oncoming drivers in situations such as when the car is heavily loaded.

When the ignition switch is in the drive position, terminal 9 of switch 282 is supplied across fuse 10 and the black 29-pole connector 152C. When the switch is in position 0, the headlamps will be in their normal setting. When the switch is moved to position 1, electric motors (stepping motors) 280 and 281 will be energized and will rotate a number of revolutions, turning the adjusting screws to lower the headlamp setting. When the switch is moved to positions 2 and 3, the setting will be lowered further, in two steps.

Similarly, the setting can be raised in steps, from 3 to 2, 1 and 0.

Fault-tracing hints
The headlamp beam adjustment system will be operative when the ignition switch is in the drive position.

1. Check fuse 10 and check that the supply to it is live.
2. Check that the supply to switch 282 is live.
3. By operating the switch, check that the supply to motors 280 and 281 is live.
4. Check the connectors, wiring and earth connections.