System Diagram

oN-ZHeadlamp Beam Adjustment:

WIRING DIAGRAM

Headlamp Beam Adjustment: Component Location View:

COMPONENT LOCATION VIEW

Headlamp Beam Adjustment: Component ID:

COMPONENT ID
11 Full beam in LH and RH head-lamps.
12 Dipped beam in LH and RH head-lamps.
16 Rheostat, instrument lighting, on dashboard between the steering wheel and driver's door.
22A Fuse board behind the cover flap in the glove box.
231 Distribution terminal (+54 circuit) in main fuse box behind the glove box.
280 Motor, headlamp beam adjustment, adjacent to the left-hand headlamp.
281 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
G2 Grounding point, battery tray, on the left-hand wheel housing.
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
Headlamp Beam Adjustment
Some models for certain markets are equipped with a headlamp beam adjustment system. The driver can adjust the setting of the headlamps using the switch on the dashboard. This avoids dazzling the drivers of other vehicles when the car is heavily loaded.

With the ignition switch in the Drive position, current is supplied to terminal 9 on light switch 282 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 280 and 281 are supplied with current and rotate a number of turns (stepping motors). These motors actuate the setting screws and the setting of the headlamps is lowered. When the switch is turned to positions 2 and 3, the setting is lowered a further two steps.

The beam setting is raised in steps in the same way, 3-2-1-0.

FAULT DIAGNOSIS HINTS
Headlamp Beam Adjustment
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.