Headlamp Beam Adjustment

���XHeadlamp Beam Adjustment:

WIRING DIAGRAM

Headlamp Beam Adjustment: Component Location:

COMPONENT LOCATION VIEW

Headlamp Beam Adjustment: Component ID:

COMPONENT ID
11 Main beam, LH and RH headlamps.
12 Dipped beam, LH and RH headlamps.
16 Rheostat, lighting for instruments and controls, on dashboard between the steering wheel and driver's door.
22a Fuse board behind the access panel in the glove box.
231 Distribution terminal (+54 circuit), in main fuse box behind the glove box.
280FL Motor, headlamp beam adjustment, adjacent to the left-hand headlamp.
280FR Motor, headlamp beam adjustment, adjacent to the right-hand headlamp.
282 Switch, headlamp beam adjustment, on dashboard between the steering wheel and driver's door.

24-Pin Connector
H24-2 Behind the left-hand headlamp.

Grounding Points
G8 Grounding point, dashboard reinforcing member.
G30 Grounding point, left-hand structural member, behind the left-hand headlamp.
G31 Grounding point, right-hand structural member, behind the right-hand headlamp.

DESCRIPTION OF OPERATION
Some models for certain markets are equipped with a headlamp beam adjustment system.

By means of a switch on the dashboard the driver can change the vertical alignment of the headlamps. This avoids dazzling the drivers of oncoming vehicles when the car is heavily loaded.

With the ignition switch in the Drive position, terminal 9 of lights switch 282 is supplied with current via fuse 12.

With the switch in position 0 the headlamps are at their normal setting. When the switch is turned to position 1, electric motors 280FL and 280FR are supplied with current and rotate a certain number of revolutions (stepping motors). These motors act on the headlamp setting screws, lowering the setting of the headlamps by a certain amount. When the switch is turned to positions 2 and 3, the setting of the headlamps is lowered a further step or two.

In a similar manner, headlamp beam setting can be raised in steps through positions 3-2-1-0.

FAULT DIAGNOSIS HINTS
The headlamp beam adjustment system will be operative when the ignition switch is in the Drive position.
1. Check that fuse 12 is intact and supplied with current.
2. Check that current is supplied to switch 282.
3. Check, by activating the switch, that current is supplied to motors 280 and 281.
4. Check the connectors, wiring harness and ground connections.