3232973 - 5580E anti-theft device

The vehicle is fitted as standard with an ALFA ROMEO CODE immobilizer system to protect against theft.An antitheft system with volumetric protection and an alarm is available on request.

ALFA ROMEO CODE

To increase protection against theft attempts, the vehicles have bee fitted with an electronic engine immobilizer system known as the 'ALFA ROMEO CODE'.The keys are equipped with an electronic transponder which transmits a coded signal to a special electronic control unit. If it recognizes the code sent, it allows the engine to be started up.

New design system with cipher code

The second generation Code system has the same operating logic as the previous system already used on all Group vehicles, with the exception of the following variants:

• the code used in the dialogue, which takes place via the aerial, between the Code control unit and the key varies each time the engine is started up ('ROLLING CODE') and is in cipher: therefore the code cannot be reproduced, even with an electronic scanner
• Master key eliminated: two keys which have already been 'programmed' for both the Code system and the alarm (remote control), if fitted, are supplied
• Code control unit with direct autodiagnosis
• programming of codes in a DATA BASE managed by PARTS DEPT. Therefore when the new vehicle is handed over to the customer, the service network should not carry out any programming procedure for the Code or the alarm.

Code system components

The Code system consists of:

• two (or more) electronic keys
• a Code electronic control unit, with a serial line for communication with the engine control unit
• aerial in the ignition switch
• CODE Card for the emergency starting procedure.

1, CODE electronic control unit 2, Ignition switch with aerial 3, Electronic injection control unit (on some versions the injection control unit is located in the engine compartment) 4, Warning light in instrument panel

Keys

2 keys are supplied, with transponder and remote control (if an alarm is fitted).The transponder is an electronic device, NOT supplied by the battery, which contains a special 'ID' code (different for each key and not in cipher) and the secret code connected to the vehicle Code control unit.When the key is inserted in the ignition, in the ON position, the transponder is energized by radio waves from the aerial around the key lock barrel and automatically responds by emitting a code.The remote control contains a specific code (see DESCRIPTION AND OPERATION: Alarm).

The keys are supplied already programmed by the production plant.

All the codes are then stored in a DATA BASE managed by the PARTS DIVISION.Therefore, when a new vehicle is handed over to a customer, the Service Network should not carry out any programming procedures.If a key is mislaid or additional keys are requested, this request should be passed on to the Parts Dept. following the procedures described below. 1, Transponder 2, Remote control operating button (see Alarm) 3, Remote control repeater LED (see Alarm)

Code control unit

The main function of the Code control unit is to recognize the key inserted in the ignition switch.The Code control unit is also responsible for programming the keys and the Code warning light.The Code control unit contains the secret code used in the dialogue which takes place via the aerial between the Code control unit and the key transponder.It also contains the codes for the enabled keys (IK1 and ID2) and the fix code (non-cryptic code used in the dialogue between the Code control unit and the engine control unit: when the key is turned to the ON position for the first time, if the key is recognized, the FIX CODE is transferred to the engine control unit).The Code control unit has a direct diagnostic line, independent from the engine control unit line.The Code control unit and the engine control unit 'converse' via a serial line with a single cable.The serial line is the two-way type: this means that the information travels in a sequential fashion from the engine control unit to the Code control unit and viceversa.Code control unit pin-outRefer to the illustrationConnector A, 3-way1 Aerial supply (+)2 N.C.3 Aerial supply (-)Connector B, 8-way1 N.C.2 Signal for warning light bulb3 Direct supply4 Earth5 Diagnostic line K6 Serial connection line with the i.e. control unit7 Predisposition for external relay (Not connected)8 Supply controlled by the ignition For further details see wiring diagram, function  See E7010  CODE

Dialogue between the code control unit, key and engine control unit

- With the ignition key in the ON position, the engine control unit asks the Code control unit for the FIX CODE- The Code control unit asks the transponder in the key for ID- The transponder transmits ID1 to the Code control unit where the ID received is compared with the enabled ones- If the ID received is amongst the enabled ones, the secret code is checked through a coded dialogue between the Code control unit and the transponder- If this recognition takes place, the Code control unit sends the FIX CODE to the engine control unit, which checks that it conforms and enables the starting and running of the engine. The Code warning light goes outIf this recognition does NOT take place, the Code control unit sends a special code to the engine control unit which does not allow the engine to be started up. The Code warning light remains on constantly.The logic of the dialogue between the two control units is summarized in the diagram. 1, CODE electronic control unit 2, Ignition switch with aerial 3, Engine control unit 4, 'CODE failure' warning light in control panel 5, 'Electronic injection failure' warning light in control panel

Code system warning light

The Code warning light in the instrument panel is managed by the Code control unit.

If the ignition key is turned to the ON position, the indicator can signal one of the following conditions:

• on briefly (0.7 s) and then off: key recognized, system operation correct;
• on constantly: the control unit has detected one of the following faults:
• key not recognized by the Code control unit;
• serial line between Code control unit and engine control unit not connected or no communication between the control units
• key programming procedure not carried out (new control unit from PARTS DEPT.).

The operation of the warning light is summarized in the following diagram.

Code card

This is the card which contains:

• the emergency electronic code which allows the vehicle to be started using the Examiner or other diagnostic instrument or, in an emergency, using the accelerator pedal
• the mechanical code.

1, Electronic code 2, Mechanical code The emergency electronic code is also used for the system fault diagnosis and for other operations using the Examiner or other diagnostic equipment. Many of these operations (e.g. 'Programming Keys') can, in effect, only be carried out after this code has been entered. Therefore before any operation, the Customer must be asked for the Code Card.

The Code Card should not be left in the vehicle in case it is stolen: it should, however, be available for the emergency starting procedure described below.

System self-test

The control unit carries out a continuous self-test of the system's operation. In particular:

• it detects and memorizes any faults
• it recognizes the various components and the type of fault
• it signals the onset of these faults via the special warning light in the instrument panel.

The Code system has its own diagnostic line and therefore it is possible, using the Examiner or other diagnostic equipment, to detect the information stored in the control unit memory.

The control unit provides information on:

• the state of the control unit: it indicates whether the control unit is correctly programmed and operational, if it is unusable, or if the 'Key Programming' procedure has not been carried out (new control unit ordered from PARTS DEPT.)
• the state of the Code warning light: on or off (it makes it possible to identify any irregularities in the warning light connections)
• the status of the key (correctly programmed or not)

- the number of keys enabled.

The control unit then recognizes faults in all the system components:

• Code control unit
• aerial
• key transponder;
• serial line with engine control unit.

Once the faults have been repaired, it is then possible to cancel the faults memorized by the control unit.

It is also possible to carry out the following procedures using the Examiner:

• Key programming

Any keys no longer present are automatically and definitively cancelled in a new programming.

Cancelling keys programmedThe operations described can only be carried out using the Examiner after having entered the emergency electronic code on the Code Card.Therefore before any operation using the Examiner or other diagnostic equipment, the Customer must be asked for the Code Card.Emergency starting procedureThe emergency starting procedure makes it possible to start up the engine if there is a problem in the Code system (Code control unit faulty, keys unusable, etc.), i.e. if the engine control unit has not received the go ahead for starting from the Code control unit.This operation is useful for starting up the engine and driving the vehicle to a Service Centre to have the fault repaired.

After an emergency starting procedure, if the ignition is turned to the OFF position, the engine control unit will return to the engine immobilized condition and the procedure should be repeated, if necessary.

This procedure can be carried out using the Examiner or - only in emergencies - using the accelerator pedal:By acting on the accelerator pedal, the emergency code is transmitted to the injection control unit through the signal detected by the butterfly valve.Carry out the following operations in the order given:1 Read the emergency code on the Code Car.2 Turn the ignition to the ON position; press the accelerator pedal and keep it pressed.The injection failure warning light should come on for 4 seconds, then go out briefly (150 ms.) and come on again for another 4 seconds.3 When the warning light goes out, release the accelerator pedal.4 When the pedal is released, the warning light should start to flash (at a frequency of 0.8 Hz).5. After a number of flashes equivalent to the first figure of the code on the Code Card, fully depress the accelerator pedal and keep it depressed.6. The injection warning light should come on again for 4 seconds and then go out to indicate that the first figure has been accepted.7. When the warning light goes out, release the accelerator pedal.8. When the pedal is released, the warning light will start to flash again as before (frequency 0.8 Hz).9. After a number of flashes equal to the second digit, press the accelerator pedal; the warning light comes on for 4 seconds to indicate that the second digit has been accepted10. Repeat the above for the other figures in the emergency code.11. When the pedal is released after the last figure has been accepted, the warning light should flash at twice the frequency (1.6 Hz) to indicate that the entire code has been accepted. If, on the other hand, the warning light remains on, this means that the code has been rejected.12. If the code has been accepted, start up the engine; if this is not the case, turn the key to the OFF position and try the operation again. The graph illustrates pedal operations and warning light flashes for the code 42173

Data base

There is a centralized DATA BASE (for all markets) managed by the PARTS DEPT. for ordering all system components.The production plant transfers all the details needed into this DATA BASE together with the chassis number of the new vehicle.This PARTS DATA BASE should be used by the Service Network for ordering replacement components.

The DATA BASE contains various information, including:

• vehicle chassis number
• ID1, ID2, (up to a maximum of 8)
• PASSWORD
• mechanical key code

(*) For versions with an alarm, there are special codes for the remote controls for each key: a remote control cannot be recreated with the same code as the one lost.

Intervention procedures

Loss of key(s)1. Ask the customer for all the keys remaining in his possession. He should also prove that he owns the vehicle by showing the registration document and a valid identity document.2. Carry of the PROGRAMMING OF THE KEYS remaining using the Examiner or other diagnostic equipment working on the Code control unit. In this way ke

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ALARMS

The alarm system offers volumetric and perimeer protection for the vehicle.

An electronic control unit monitors the following:

• the closure state of the doors and lids (perimeter control)
• the presence of a moving object inside the passenger compartment (volumetric control)
• the operation of the ignition switch
• the condition of the supply cables for the vehicle and the emergency key.

The radiofrequency type of remote control adopted facilitates the activation operations because this system has a high capacity, which is non directional and not affected by the transparency and cleanliness of the windows.In addition, the system for transmitting the secret code between the remote control and the receiver is a rolling code, in other words a cipher code which is different each time.

System components

The alarm system consists of:

• two (or more) keys with remote control
• an electronic control unit with a built in siren
• a remote control receiver
• Volumetric sensors
• an LED (device activated indicator)
• an emergency key (not planned for certain markets)
• a bonnet opening switch (incorporated in the lock)
• a boot opening switch (incorporated in the lock)
• a doors open switch (incoroprated in the locks).

1, Alarm electronic control unit with siren incorporated 2, Diagnostic socket 3, Emergency key 4, LED 5, Receiver 6, Volumetric sensors 7, Doors, boot and bonnet switches 8, Remote control in the key Keys2 keys are supplied with a transponder and remote control transmitter.The transponder is used by the Code system (see DESCRIPTION AND OPERATION: ALFA ROMEO CODE).The remote control incorporated in the key consists of an electronic circuit and a radiofrequency transmitter supplied by a battery.Each time the remote control button is pressed, it sends the radio code within a range of 10 metres.The LED in the key flashes to signal that the button has been operated correctly.It also signals when the battery is run down by giving a single brief flash each time the actual button is pressed.If the button remains pressed for more than 80 seconds, the control signal is stopped in order not to run the battery down unnecessarily. The signal is activated by releasing the button and pressing it again.Each remote control (and therefore each key) contains its own special code.Up to 5 keys (remote controls) can be programmed in one receiver.

The keys are supplied by the production plant already programmed. All the codes are then stored in a DATA BASE managed by the Parts Department. Therefore when a new vehicle is handed over to a customer, the Service Network should not carry out any programming procedure.If one of the keys is mislaid or there is a request for additional keys, then this request should be passed on to the Parts Division according to the following procedure.

1, Transponder (see Alfa Romeo Code) 2, Remote control operating button 3, Remote control repeater LED Alarm control unitAn electronic control unit manages the entire system checking all the components.

The main function of the control unit is to check:

• the state of the doors and the lids, through the switches in the locks
• the presence of a moving object inside the passenger compartment, via volumetric sensors.
• the condition of the system supply cables (both directly from the battery and those controlled by the ignition)
• the condition of the supply cables for the emergency key (if fitted)
• the operation of ignition switch

The control unit is equipped with a self-test function which detects and memorizes faults in the control unit itself and the system components and also checks the condition of the connecting cables.The control unit also memorizes the number of times the alarm is activated and set off.The control unit operating software may be altered to meet regulations governing the use of alarm systems applicable in different markets. (see 'COUNTRY CODE' programming)The electronic control unit incorporates the siren.The siren can operate at different levels according to the programming for the various countries (see description which follows).The control unit is located at the front, under the Locary on the left of the engine compartment.Control unit pin-outRefer to the illustrationConnector A, 12-way1 Deterrent LED2 N.C.3 Direct supply4 Emergency key OFF 5, Anti-tilt module supply (Outlets not connected on this version) For further details see wiring diagram, ALARM function  See E7015  ALARM ) 6 Diagnostic line K and connection with receiver7 Emergency key ON8 Volumetric sensors supply9 Control unit earth 10 Anti-tilt module signal (Outlets not connected on this version For further details see wiring diagram, ALARM function  See E7015  ALARM ) 11 Volumetric sensors earth12 Volumetric sensors signalConnector B, 18-way1 Right branch direction indicators control2 Left branch direction indicators control3 Preparation for external relay contact (Outlets not connected on this version. For further details see wiring diagram, ALARM function  See E7015  ALARM ) 4 N.C.5 N.C.6 N.C.7 Direction indicators supply8, Left front door signal9, Right front door signal10 N.C.11 N.C.12 Supply controlled by the ignition13 Emergency key supply 14 Doors open signal (check panel operation) (Outlets not connected on this version) For further details see wiring diagram, ALARM function  See E7015  ALARM ) 15 Rear left door signal16 Rear right door signal17 Boot lid signal18 Bonnet lid signalReceiverThe receiver is an electronic device which receives the transmitter signal. It is located in the rear part of the roof panel.

It is connected to the control unit via the serial line and directly manages the following system functions:

• it receives, decodes and manages the remote control signals
• it locks and unlocks the doors
• it memorizes the codes for enabled transmitters.

The receiver contains the PASSWORD used to programme (enter or delete) the various codes in the transmitters. The receiver also has its own autodiagnostic function which detects and memorizes faults in the actual receiver and the components connected to it and it checks the condition of the connecting cables.

Each receiver is programmed by the production planT. All the codes are then stored in a DATA BASE managed by the Parts Division. Therefore when a new vehicle is handed over to a customer, the Service Network should not carry out any programming procedure. If a receiver is being replaced, the request should be forwarded to the Parts Division following the procedures described below.

Receiver pin-outRefer to the illustrationConnector, 16-way1 Direction indicators control (*)2 Diagnostic line K and connection with alarm control unit3 Direct supply4 Earth5 Door 'unlocking' control6 Door 'locking' control7 Supply controlled by the ignition8 Courtesy lights control (Outlets not connected on this version)9 Electric windows control (Outlets not connected on this version)10 N.C.11 N.C.12 N.C.13 N.C.14 N.C.15 N.C.16 N.C. For further details see wiring diagram, function  See E7015  ALARM and  See E3040  CENTRAL LOCKINGEmergency key(not planned for certain Markets)The emergency key for deactivating the system is located on the left of the dashboard, next to the junction unit, in a position that is easily and quickly accessible.

It makes it possible to exclude the system, for example in the case of repair operations:

• by turning the key in an anti-clockwise direction, the system is deactivated: emergency key in OFF position
• by turning the key in a clockwise direction, the system is activated: emergency key in ON position.

1, Emergency key 2, Protective cover Switches The same switches as for the central locking system are used to control the doors and lids. For further details see wiring diagram, function  See E3040  CENTRAL LOCKINGThere is, however, a special switch in the bonnet lid lock. 1, Bonnet lid opening switch 2, Bonnet lid lock Volumetric sensorsThe volumetric sensors allow additional surveillance because they check that there are no intrusions in the vehicle. These are located on two central car pillarsBoth are 'dual' sensors, i.e. each consists of a transmitter and a receiverThe wave sent by a transmitter should reach the receiver of the other sensor and viceversa: if this is not the case, an alarm signal is sent to the control unit.One pair monitors the front part of the passenger compartment, the other pair controls the rear, as shown in the following diagram: (E = transmitter C = receiver). 1, Right-hand side volumetric sensor 2, Left-hand side volumetric sensor Deterrent ledThe dissuasion LED is located in the dashboard, in the centre above the air vent and signals the state of the system (on, off, etc.) plus any faults. 1, Deterrent LED

System operation

Switching onit is only possible to switch on the alarm with the ignition key in the OFF or PARK positions or with it extracted.The alarm is activated by pressing the button in the remote control. It has an operating range of about 10 metres.When the command has been given, the door locks are locked, the siren sounds and, at the same time, the direction indicators come on for about 2.5 seconds; the deterrent LED also flashes. the deterrent LED also flashes.

the activation of the auditory signals and the flashing of the direction indicators depends on the various country modes (see description which follows).

Switching offThe alarm is switched off by pressing the remote control button.When the command has been given, the doors are unlocked, the siren sounds briefly twice and, at the same time, the direction indicators flash twice.

the activation of the auditory signals and the flashing of the direction indicators depends on the various country modes, as described later on.

Switching on with siren excludedThe operation of the siren can be excluded during the surveillance stage: when switching on, press the remote control button for more than 4 seconds.After the auditory signals connected with the engagement, there are 5 auditory signals in quick succession to indicate that the siren has been excluded.Next time it is switched on, the exclusion procedure should be repeated, if the siren is to be excluded once again.Excluding the system

The system can be deactivated with the emergency key (OFF position) if:

• the remote control batteries are run down
• the system is faulty
• the vehicle is not used for long periods (more than 3 weeks).

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