Alfa Romeo 159 2.4 JTD 20V Da 01/06 – DIPPED HEADLAMPS – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - DIPPED HEADLAMPS - Alfa Romeo 159 2.4 JTD 20V Da 01/06

DIPPED HEADLIGHTS - WIRING DIAGRAM Alfa Romeo 159 2.4 JTD 20V Da 01/06

COMPONENTS - DIPPED HEADLAMPS - Alfa Romeo 159 2.4 JTD 20V Da 01/06

Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
C010	LEFT FRONT EARTH	-
C011	RIGHT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C020	PASSENGER SIDE DASHBOARD EARTH	-
E050	INSTRUMENT PANEL
F010	LEFT HEADLAMP
F011	RIGHT HEADLAMP
H005	STEERING COLUMN SWITCH UNIT
M001	BODY COMPUTER
M089	STEERING LOCK CONTROL UNIT (NBS)
P065	ELECTRO-CHROMIC INTERIOR REAR VIEW MIRROR	-

COMPONENT LOCATION - DIPPED HEADLAMPS - Alfa Romeo 159 2.4 JTD 20V Da 01/06

DIPPED HEADLIGHTS - COMPONENT LOCATION Alfa Romeo 159 2.4 JTD 20V Da 01/06

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Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
C010	LEFT FRONT EARTH	-
C011	RIGHT FRONT EARTH	-
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C020	PASSENGER SIDE DASHBOARD EARTH	-
E050	INSTRUMENT PANEL
F010	LEFT HEADLAMP
F011	RIGHT HEADLAMP
H005	STEERING COLUMN SWITCH UNIT
M001	BODY COMPUTER
M089	STEERING LOCK CONTROL UNIT (NBS)
P065	ELECTRO-CHROMIC INTERIOR REAR VIEW MIRROR	-

DESCRIPTION - DIPPED HEADLAMPS - Alfa Romeo 159 2.4 JTD 20V Da 01/06

The vehicle is equipped with two dipped headlamps in the lights. The headlamps are switched on by the steering column switch unit by turning the ring nut to the position after the side lights.A special relay, located in the junciton unit under the dashboard, controls the engagement of the dipped headlamps via two lines protected by special fuses. The relay for engaging the dipped headlamps is managed by the Body Computer. relay energizing is activated by enablement signals with the TEG inserted (INT) and from the specific signal from the steering column switch unit.With the dipped headlamps on, the simultaneous presence of the main beam and fog lights commands disables the dipped headlamps. The subsequent deactivation of one of these two commands, with the dipped headlamps control still on, involves the dipped headlamps being turned back on.The dipped headlamps can be automatically activated by means of the dusk sensor, if the AUTO function is set on the steering column switch unit. The dusk sensor is an infrared device that works at different sensitivity settings: when the dusk sensor is activated a message is shown on the instrument panel display indicating the sensitivity setting (from 1 to 3): this setting can be adjusted using the "Mode +" and "Mode -" buttons.The "Follow me home" function allows the dipped headlamps and the side lights to remain on even after the engine has been switched off (TEG extracted) for a period of 30 seconds or multiples thereof. The "dipped headlamps" warning light in the instrument panel signals that the lights have remained on.It is turned on using the lever in the same way as for activating the flasher within 2 minutes of the TEG being extracted: each time the lever is operated the length of time the lights remain on is increased by 30 seconds, up to a maximum of 210 seconds. Inserting the TEG or keeping the flasher lever pulled for more than 2 seconds eliminates the function.

FUNCTIONAL DESCRIPTION - DIPPED HEADLAMPS - Alfa Romeo 159 2.4 JTD 20V Da 01/06

Two signals (earth) are sent from the steering wheel stalk unit H5 to the Body Computer M1 that manages both side lights and low beams in manual or AUTO mode (automatic dusk sensor activation).The "Light 1" signal is sent from pin 28 of connector G of Body Computer M1 from stalk unit H5, pin 7 of connector C.The "Light 2" signal is sent to pin 2 of connector I of the Body Computer M1 from the steering column switch unit H5, pin 8 of connector C. The dipped headlamps are switched on manually when the "Light 1" is absent and when the "Light 2" signal is also missing.The dipped headlamps are activated in AUTO mode when the Light 1 signal is present and the Light 2 signal is not present. If both signals are present, the lights are constantly off.The dipped headlamps are automatically activated by the dusk sensor housed in the mirror P65 (signal via the A-BUS line at pin 7 of connector D of M1); the dusk sensor in P65 receives a supply from the INT line protected by fuse F49 of junction unit B2.The Body Computer M1 controls the supply for the dipped headlamps sending an earth signal to relay T1 in the junction unit under the dashboard B2 from pin 8 of connector F of M1 which energizes relay T1: this supplies the dipped headlamps F10 (left) and F11 (right). Each circuit is protected by a fuse in the junction unit B2 : F13 for the left headlamp and F12 for the right.The Body Computer M1 is connected via the CAN line to the instrument panel E50 to manage the "dipped headlamps on" warning light and, if there are problems detected in the circuit, the specific warning light.