Alfa Romeo 159 2.4 JTD 20V Fino a 12/05 – CENTRAL LOCKING – – Low setup – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

WIRING DIAGRAM - CENTRAL LOCKING - Alfa Romeo 159 2.4 JTD 20V Fino a 12/05

CENTRAL LOCKING - WIRING DIAGRAM Alfa Romeo 159 2.4 JTD 20V Fino a 12/05

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COMPONENTS - CENTRAL LOCKING - Alfa Romeo 159 2.4 JTD 20V Fino a 12/05

Component code	Description	Reference to the operation
B002	JUNCTION UNIT UNDER DASHBOARD
B099	MAXIFUSE BOX ON BATTERY
C015	DASHBOARD EARTH, DRIVER'S SIDE	-
C020	PASSENGER SIDE DASHBOARD EARTH	-
C030	LEFT REAR EARTH	-
C031	RIGHT REAR EARTH	-
D001	FRONT/DASHBOARD COUPLING	-
D006	FRONT/REAR COUPLING	-
D030	DRIVER'S FRONT DOOR COUPLING	-
D031	PASSENGER FRONT DOOR COUPLING	-
D035	LEFT REAR DOOR COUPLING	-
D036	RIGHT REAR DOOR COUPLING	-
E040	ALARM LED
E050	INSTRUMENT PANEL
H035	TUNNEL SWITCHES
I050	INERTIA SWITCH
M001	BODY COMPUTER
M066	DRIVER'S DOOR CONTROL UNIT (NPG)
M089	STEERING LOCK CONTROL UNIT (NBS)
N050	DRIVER'S FRONT DOOR LOCK GEARED MOTOR
N051	RIGHT FRONT DOOR LOCK GEARED MOTOR
N055	LEFT REAR DOOR LOCK GEARED MOTOR
N056	RIGHT REAR DOOR LOCK GEARED MOTOR

COMPONENT LOCATION - CENTRAL LOCKING - Alfa Romeo 159 2.4 JTD 20V Fino a 12/05

DESCRIPTION - CENTRAL LOCKING - Alfa Romeo 159 2.4 JTD 20V Fino a 12/05

The simultaneous operation of the four door locks takes place via:- TEG the remote control;- the locking/unlocking button in the centre console.The TEG remote has 3 buttons which allow the operation of the central locking system: a button for unlocking the doors, one for locking the vehicle and one for releasing the bootThe door unlocking/locking management strategy is carried out by the door control unit which controls the effective state of the locks through the signals arriving from the switches in the actual locks and the emergency key pawl (driver''s door only) in this way the "locking" command is only carried out with all the doors properly shut and the locks unlocked; conversely, the "unlocking" command is only carried out with the locks locked.The locks have an additional motor that carries out the dead lock function which allows the interior door opening handles to be mechanically disconnected so that it is no longer possible to open the door from the inside (for example, after having broken the glass in a theft attempt); the dead lock function also inhibits the operation of the door locking/unlocking buttons in the dashboard.The dead lock function is switched on at the time the doors are locked or by pressing the remote control twice.An LED next to the two above mentioned controls makes the following signals:- locking of the locks: the LED lights up for 3 seconds. If some of the doors or the boot are not properly shut at the time when the locks are locked, the LED flashes at 3 Hz for 3 seconds;- dead lock activation: the LED flashes twice for 0.5 seconds;- unlocking the locks: the LED goes out.The instrument panel acquires the door status signal via the CAN and lights up the "doors open" warning light and, at the same time, the information is shown on the display; in addition, if one of the doors or the boot or the bonnet is open and the speed of the vehicle exceeds around 4 km/h, an acoustic warning is also emitted.It is possible, using the special setup in the instrument panel, to select whether to unlock all the doors or only the driver''s front door, whilst all the other doors and the boot remain locked.It is possible to enable/disable the locking of the doors above a certain speed threshold (20 km/h) using the special setup in the instrument panel: in this case the Body Computer implements the locking of the doors when this threshold is exceeded. When the speed returns below this level, the doors and the boot remain locked; later on, when one of the doors is opened, the function is re-enabled and, if the threshold is exceeded, the doors are locked once again.The boot unlocking operating mode can be selected still using the special setup in the instrument panel:- assisted boot unlocking: the tailgate is considered as a fifth door to all intents and purposes;- independent boot unlocking: the boot is locked when the doors are locked, whilst it can be unlocked independently of the unlocking of the doors.The doors are automatically unlocked if the inertia switch is operated: the instrument panel receives a signal from the switch, lights up the appropriate warning light and notifies the Body Computer via the CAN.The central locking circuit is protected by a specific fuse located in the junction unit under the dashboard.

FUNCTIONAL DESCRIPTION - CENTRAL LOCKING - Alfa Romeo 159 2.4 JTD 20V Fino a 12/05

The locking/unlocking function for the doors is operated by the front doors control unit M66 connected via the CAN line to the Body Computer M1.Control unit M66 is supplied at pin 11 of connector D - by a line protected by fuse F36 of the junction unit under the dashboard B2 .Pin 19 connector B and 7 of connector D of M66 are earthed.The control unit M66 receives the following inputs:- the "locking" signals from the four knobs, at pin 23 of connector B of and 7 of connector C of M66;- the locking/unlocking signals from the emergency key pawl, at pins 24 and 25 of connector B of M66;- the negative signal from the locking/unlocking button, located in the controls on the tunnel H35, at pin 34 of connector A of M66.According to the control logic illustrated, the control unit M66 controls the geared motors for the four door locks and the fuel flap: the joint power supply for the motors is sent from pins 6 and 5 of connector D; the locking/unlocking motors (B/S) are operated from pins 4 and 2 of connector D; the dead lock motors (DL) for locks N50 and N51 are operated from pins 3 and 1 of connector D. N55, N56.The signalling LED E40 is lit up by a signal from pin 8 of connector C of M66, whilst a reference earth is sent from pin 6.The activation of the inertia switch I50 is indicated at pin 17 of connector D of the Body Computer M1 : this signal, as described previously, causes the opening of the doors.