Alfa Romeo GT 3.2 V6 – DIPPED HEADLAMPS – – Xenon Gas headlamps – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - DIPPED HEADLAMPS - Alfa Romeo GT 3.2 V6

DIPPED HEADLAMPS - WIRING DIAGRAM Alfa Romeo GT 3.2 V6

Components - DIPPED HEADLAMPS - Alfa Romeo GT 3.2 V6

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C10	FRONT LEFT EARTH ( FRONT )	-
C11	RIGHT FRONT EARTH ( FRONT )	-
C15	FACIA EARTH, DRIVER''S SIDE	-
F10	LEFT HEADLAMP ( FRONT )
F11	RIGHT HEADLAMP
H1	IGNITION SWITCH
H5	STEERING COLUMN SWITCH UNIT
M1	BODY COMPUTER

Location of components - DIPPED HEADLAMPS - Alfa Romeo GT 3.2 V6

DIPPED HEADLAMPS - LOCATION OF COMPONENTS Alfa Romeo GT 3.2 V6

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Components - DIPPED HEADLAMPS - Alfa Romeo GT 3.2 V6

Component code	Name	Assembly reference
B1	JUNCTION UNIT	-
B2	JUNCTION UNIT UNDER DASHBOARD
B5	MAXI FUSE-1 BOX	-
B99	MAXIFUSE BOX ON BATTERY
C10	FRONT LEFT EARTH ( FRONT )	-
C11	RIGHT FRONT EARTH ( FRONT )	-
C15	FACIA EARTH, DRIVER''S SIDE	-
F10	LEFT HEADLAMP ( FRONT )
F11	RIGHT HEADLAMP
H1	IGNITION SWITCH
H5	STEERING COLUMN SWITCH UNIT
M1	BODY COMPUTER

Description - DIPPED HEADLAMPS - Alfa Romeo GT 3.2 V6

The vehicle is equipped with two GAS DISCHARGE headlamps.The electronic circuitry in each of the two headlamps switches the software on and off at the appropriate times and, in accordance with international regulations, the gas discharge headlamps.The system consists of an ignition system and ballast for each lamp which are activated when the dipped headlamps function is requested.The left headlamp is the Master control unit while the right acts as a Slave unit.The master receives the command for the dipped headlamps and the vehicle speed from the potentiometers on the wheel axles. According to the input, the switching on of the left front headlamp (dipped headlamps) is controlled and likewise that of the right headlamp via the serial line.The dipped beam headlamps are switched on through the steering column switch by turning the specific ring to the position after the side lights.A special relay - in the underdashboard control unit - controls the switching on of the dipped headamps via two lines protected by special fuses.The relay for switching on the dipped headlamps is managed by the Body Computer: the energizing of the relay is activated by the go ahead signals with the ignition key in the ON position (INT) and by the specific signal from the steering column switch unit.The Body Computer also manages the ''dipped headlampa maintenence'' function: when the main beam headlamps are on, the Body Computer keeps the dipped headlamps on.If the dipped headlamps and the main beam headlamps are already on, then the fog lights cannot be switched on. Similarly, if the dipped headlamps and the fog lights are on and main beam headlamps are switched on, then the fog lights are switched off.The ''Follow me home'' function is designed to keep the dipped headlamps and the side lights on after the engine has been switched off (key in OFF and/or PARK) for a time of 30 seconds or multiples thereof.Keeping the dipped headlamps on is signalled by the side lights warning light in the instrument panel remaining on.The funciton is switched on by operating the flasher lever within 2 minutes: each time the lever is operated the time the lights remain on increases by 30 seconds up to a maximum of 210 secs.Operating the flasher lever for longer than 2 seconds switches the function off; the function is also switched off if the ignition key is turned to the ON position.

Functional description - DIPPED HEADLAMPS - Alfa Romeo GT 3.2 V6

The dipped beam activation signal is sent to pin 4 of connector D of the Body ComputerM1from the stalk unitH5.The ''ignition ON'' signal (INT) for the switch H1 reaches the underdashboard control unitB2at pin 11 of connector H and from there moves on to the Body ComputerM1(pin 9 of connector F).The Body ComputerM1 controls the supply of the dipped headlamps sending an earth signal to the underdashboard control unit B2 - from pin 8 of connector F of M1 - which energizes the relay T1: this supplies the dipped headlamps F10 (left) and F11 (right).Each circuit is protected by a control unitB2fuse: F13 for the left headlamp and F12 for the right one.