DescriptionTo increase the protection against theft attempts, an electronic immobiliser system known as the ALFA ROMEO CODE system is adopted.The keys are fitted with an electronic Transponder device, which send a coded signal to a special CODE electronic control unit. If it recognizes the code sent, it allows the engine to be started up.The code used in the communication, which takes place via aerial, changes each time the car is started up (rolling code). The code cannot therefore be reproduced, even with electronic scanners.The main function of the Code control unit is to identify the code in the ignition key. The control unit contains a secret code which is used to communicate with the key Transponder.The control unit contains all enabled key codes in its memory, together with the code used in the communication between Code control unit and engine management unit. When the key is turned to MAR for the first time, if the key is identified correctly, the code is transferred to the engine management unit and is then indelibly linked to the Code control unit. For more details 3308555see DESCRIPTION AND OPERATION:5580Eanti-theft device . The Code control unit supply lines are protected by the same fuses that protect the engine management unit.
Functional description CODE control unit M20 is supplied at pin 3 from the battery through maxifuse CENTR of B5 , through a line protected by fuse F20 of junction unit B1 . An ignition-operated power supply (INT/A) reaches pin 8 from a line protected by fuse F16 of junction unit B1 . Pin 4 is earthed. The line leading from pin 6 is a serial line leading to engine management unit M10 , which is responsible for identifying the key and exchanging codes. The control unit is equipped with a self-diagnostic unit that may be used by connecting the unit to connector R10 : this receives signals from pin 5 of control unit M20 through the tester line. The self-diagnostic system also generates a signal sent to the CODE fault warning light, located in instrument panel E50 , pin 4 of connector C, while pin 15 of connector A supplies an ignition-operated power supply via fuse F1 of junction unit B1 . A second control unit connector is connected via two leads to the aerial, fitted coaxially to the ignition key, in order to detect key insertion and rotation.
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213314824-5505A18multi-function controlunit - r r . 1. Undo the bolt (1a) and push back the junction unit as far asnecessary to disconnect the electrical connections (1b).767For precise identification ofthe electrical connections, see Wiring Diagrams Section.2. Remove the junction unit.2010592
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignitionis off (STOP position), then disconnect the negative battery terminal(refer to op. 33148615530B10battery - r+r ). 1. Unscrew bolt (1a) and open fuse access cover (1b).2. Undo the bolt (2a) and remove the integrated multiservices unit(2b) after having disconnected the electrical connections (2c),(2d), (2e), (2f) and (2g).2010595
5505A29
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.1. Release the retainers (1a) and remove the cover (1b) for theadditional junction unit.2071293
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213314864-5530B54battery cover - r+r . Make sure that the ignition key is in theOFF position.1. Disconnect the battery negative and positive terminals.2. Undo the bolt (2a) fixing the battery retaining bracket (2b).3. Remove the battery.2010647
5530B40
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213314864-5530B54battery cover - r+r1. Press and release the retainers (1a), then remove the cover (1b)for the supply box on the battery. 2071303
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Working in the luggage compartment, undo the knob for the batterycover.2. Remove the battery cover.2010650
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213314917-5560B11analogue control panel- r+r or replace . 1. At the bench, remove the bulbs from the panel using suitablepliers.2010702
5560B11
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignitionis off (STOP position), then disconnect the negative battery terminal(refer to op. 33148615530B10battery - r+r ). Lower the steering wheel and move it back.1. Undo the bolts (1a) and remove the upper half casing for thesteering column (1b).2010703
5560B12
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignitionis off (STOP position), then disconnect the negative battery terminal(refer to op. 33148615530B10battery - r+r ). Open the fuse carrier compartment flap.1. Using the tool (1a) and pushing the fuse carrier compartment,remove the surround (1b) complete with switches.2. Disconnect the elelectrical connections (2a), (2b) and (2c) andremove the surround complete with switches.2010706
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 3314048-1016A40ignition coil cover on cylinder head- r+r . 3314111-1048A48throttle heater sleeve - r r . 1. Disconnect the electrical connection from the butterfly casingintegrated with the M.D.S.2. Disconnect the electrical connections (2a) and (2b) from theinjection/ignition control unit and the earth lead (2c) from thebutterfly casing integrated with the M.D.S.3. Disconnect the accelerator cable from the butterfly casing integratedwith the M.D.S.4. Disconnect the injection/ignition wiring from the mounting bracket.5. Undo the bolts (5a) and remove the butterfly casing integratedwith the M.D.S. (5b) complete with the injection/ignition controlunit (5c).2007326
1056B21
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal ( 3314861-5530B10battery - r+r ). Proceed with the removal 3315197-7040D14engine bay rear sidecover (one) lh or rh - r r (Right side). 1. Loosen the band (1a) and disconnect the oil vapour recirculationpipe (1b) from the corrugated hose.2. Loosen the bands (2a) and remove the hose between resonator andthrottle body (2b), complete with resonator (2c).2007327
1056B48
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 3314048-1016A40ignition coil cover on cylinder head- r+r . 1. Disconnect the electrical connection from the phase transformerelectro-magnet.2. Undo the bolts (2a) and remove the phase transformer electro-magnet(2b).2007334
1056B50
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 3314110-1048A28vacuum air circuit resonator pipe - r+r1. Disconnect the electrical connection from the engine coolanttemperature sensor.2. Undo and remove the engine coolant temperature sensor.2007335
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 3314048-1016A40ignition coil cover on cylinder head- r+r . Discharge the fuel supply pressure (seeGroup 10 Warnings).1. Disconnect the rapid attachment for the fuel supply pipe.2. Disconnect the electrical connections from the injectors (2a)and the electrical connection from the phase transformer electro-magnet(2b).3. Undo the two bolts (3a) and remove the single fuel manifold pipe(3b) complete with injectors (3c).2007337
1056B68
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the clips (1a) and remove the injectors (1b) from thesingle fuel manifold pipe.2. Remove the seals from the injectors.2007338
Make sure that the ignition key is in theOFF position. Check that: the air conditioning is switchedoff, the accelerator pedal is never pressed and the accelerator cableis correctly positioned (refer to op. 33141321068A30accelerator control cable - r + r ). Connect the tool to the diagnostic socketand place the knob in position 3.Connect the Examiner diagnostic equipment.Connect the Examiner diagnostic equipment.Using the Examiner, enter the "ControlUnit Test" ambient.Place the ignition key in the ON position.Using the Examiner, enter the "ActiveDiagnosis" ambient, then select "Reset self-adjustmentparameters" and "Idle actuator".Using the Examiner, press "Carry outactive diagnosis".Place the ignition key in the OFF positionand wait for 30 seconds.Place the ignition key in the ON positionand wait for 30 seconds.Using the Examiner, re-establish the dialoguewith the engine control system.Using the Examiner, enter the "Parameters"ambient and select the following tests from the menu - "Idle recognitiontest - carried out" and "Idle recognition signals - synchronized".767If at least one of the parametersdoes not conform, place the ignition key in the OFF position andrepeat the procedure. If this non conformity persists, check thatthe diagnostic cable is correctly connected and check the operationof the instrument.Place the ignition key in the OFF positionand wait for 30 seconds.Start up the engine without acting on theaccelerator pedal.Disconnect the diagnostic equipment.Test the vehicle by driving for severalkilometres then, with the engine warmed up, check that it is idlingcorrectly.
1056B82
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 1. Release and disconnect the electrical connections (1a) and (1b)from the injection/ignition system control unit.2. Undo the nuts (2a) and remove the injection/ignition controlunit (2b).2007339
1056B82
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal ( 3314861-5530B10battery - r+r ). Proceed with the removal 3315197-7040D14engine bay rear sidecover (one) lh or rh - r r (Right side). 1. Loosen the band (1a) and disconnect the oil vapour recirculationpipe (1b) from the corrugated hose.2. Loosen the bands (2a) and remove the hose between resonator andthrottle body (2b), complete with resonator (2c).2007340
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 1. Disconnect the electrical connection from the intake air temperaturesensor.2. Undo and remove the intake air temperature sensor.2007791
1056B62
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). Discharge the fuel pressure (see GR 10- WARNINGS).1. Disconnect the electrical connections from the injectors.2007793
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 33148615530B10battery - r+r ). 1. Disconnect the electrical connection from the altitude corrector. 2. Undo the attachments and remove the altitude corrector.2007796
1056B79
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the buttons (1a) using the tool (1b) and remove the protection(1c).2. Open the two protective covers (2a) and undo the nuts (2b) underneathfixing the control unit cover.3. Undo the bolts (3a) and remove the control unit cover (3b).2007797
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignitionis off (STOP position), then disconnect the negative battery terminal(refer to op. 33148615530B10battery - r+r ). 1. Unscrew bolt (1a) and open fuse access cover (1b).2. Undo the nuts (2a) and remove the electronic key anti-theft controlunit (2b) after having disconnected the electrical connections (2c)and (2d).2010733
5580E18
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213314734-5010C30central air outlet onfascia - r+r . 1. At the bench, remove the anti-theft device on warning light fromthe centre air vent in the dashboard.2010734
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition keyis in stop position, then disconnect the battery negative terminal3314911-5550D16third stop light - r+r . 1. Undo the bolts fixing the anti-theft remote control receiverto the rear parcel shelf.2. Remove the anti-theft device remote control receiver (2a) afterhaving disconnected the electrical connection (2b).2010735
5580E46
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Make sure that the ignitionis off (STOP position), then disconnect the negative battery terminal(refer to op. 33148615530B10battery - r+r ). 3315190-7040B13load compartment/load platform right side trim -r r . 1. Undo the bolt (1a) and the nut (1b) fixing the anti-theft devicealarm/control unit.2. Disconnect the electrical connections (2a) and (2b), then removethe anti-theft device alarm/control unit (2c).2010736
5580E50
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Press in the direction of the arrow and lower the volumetricsensor unit (1a), releasing it from the inner retainers (1b) and(1c). 2071341
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