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HEADLAMP ALIGNMENT ADJUSTMENT - DESCRIPTION

The vehicle is fitted with two GAS DISCHARGE headlamps.

The electronics in each of the two headlights switches the gas discharge bulbs on and off at the times defined by the software and in accordance with international legislation.

The system for each headlamp comprises an igniter located at the base of the bulb and a ballast located in the lower part of the headlamp.

Depending on the inputs, the control unit controls the relevant adjustment motor, located in the headlights, directly and tilts it as appropriate.

For more details

See descriptions 5540 EXTERIOR LIGHTING

On versions with gas discharge headlights, the light beam is adjusted automatically and there is no activation of the selector in the panel on the left side.

The device is only enabled with the dipped beams on.

The electronics for the two headlights receive an ignition-controlled power supply from a Body Computer fuse.

HEADLAMP ALIGNMENT ADJUSTMENT - FUNCTIONAL DESCRIPTION

The two electronics inside the headlights F010 (left) and F011 (right) are supplied - pin 6 - by the ignition-operated line (INT) protected by fuse F37 of the Body Computer M001.

Pins 7 for the two lamps are connected to the diagnosis K line

See E8010 DIAGNOSTIC MULTIPLE CONNECTOR

The Body Computer M001 - connector A - receives a direct power supply from the battery through the line protected by maxi fuse F01 of the engine compartment junction unit B001.

The Body Computer M001 receives an ignition-controlled power supply (INT) at pin 11 of connector E.

Pin 9 of connector E of M001 provides the Body Computer with a reference earth.

The Body Computer M001 controls the power supply for the dipped headlights when it receives an earth signal at pin 38 of connector D of M001; in this way it supplies the dipped headlights for F010 (left) and F011 (right ) at pin 1 with the lines protected by fuses F13 for the left lamp and F12 for the right lamp of M001.

The headlight alignment correction function is incorporated in lamp F010: the two sensors (potentiometers) that measure the front alignment K001 and the rear alignment K002 are connected.

The two sensors receive an ignition-operated supply (INT) from the line protected by fuse F37 of the Body Computer M001 and send a signal proportional to the load detected by pin 11 of F010 and F011.

The electronics in each headlight adjusts the light beam automatically by means of a dedicated motor.

HEADLAMP ALIGNMENT ADJUSTMENT - WIRING DIAGRAM

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The original SVG asset is absent from this archive. The captured text and component links below remain available.

Component Code	Description	Reference to the operation
A001	BATTERY	Op. 5530B10 BATTERY - R+R
B001	JUNCTION UNIT	Op. 5505A28 CONTAINER FOR ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C020	PASSENGER SIDE DASHBOARD EARTH	-
D006	FRONT/REAR COUPLING	-
D105	HEADLAMP ALIGNMENT CORRECTOR REAR POTENTIOMETER COUPLING	-
F010	LEFT HEADLIGHT	Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R.
F011	RIGHT HEADLIGHT	Op. 5540B82 RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R.
H001	IGNITION SWITCH	Op. 5520A18 IGNITION SWITCH CONTACT CARRIER LOCK BARREL - R.R.
K001	HEADLAMP ALIGNMENT FRONT POTENTIOMETER	Op. 5540C42 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHT CLUSTERS ON FRONT SUSPENSION - R.R.
K002	HEADLAMP AGLINMENT REAR POTENTIOMETER	Op. 5540C46 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON REAR SUSPENSION - R R
M001	BODY COMPUTER	Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.

HEADLAMP ALIGNMENT ADJUSTMENT - COMPONENT LOCATION

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The original SVG asset is absent from this archive. The captured text and component links below remain available.

Component Code	Description	Reference to the operation
A001	BATTERY	Op. 5530B10 BATTERY - R+R
B001	JUNCTION UNIT	Op. 5505A28 CONTAINER FOR ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
C010	LEFT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C020	PASSENGER SIDE DASHBOARD EARTH	-
D006	FRONT/REAR COUPLING	-
D105	HEADLAMP ALIGNMENT CORRECTOR REAR POTENTIOMETER COUPLING	-
F010	LEFT HEADLIGHT	Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R.
F011	RIGHT HEADLIGHT	Op. 5540B82 RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R.
H001	IGNITION SWITCH	Op. 5520A18 IGNITION SWITCH CONTACT CARRIER LOCK BARREL - R.R.
K001	HEADLAMP ALIGNMENT FRONT POTENTIOMETER	Op. 5540C42 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHT CLUSTERS ON FRONT SUSPENSION - R.R.
K002	HEADLAMP AGLINMENT REAR POTENTIOMETER	Op. 5540C46 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON REAR SUSPENSION - R R
M001	BODY COMPUTER	Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.