DescriptionTo increase protection against theft attempts, an electronic immobilizer system known as the 'FIAT CODE' system has been adopted.The keys are equipped with an electronic transponder which transmits a coded signal to a special electronic control unit in the Body Computer. This allows the engine to be started if the code is recognised.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 body computer contains all enabled key codes in its memory, together with the code used in the communication between the body computer and the engine management unit. When the key is turned to MAR for 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 body computer.The two units communicate via a two-way serial line.
Functional description The CODE unit inside Body Computer M1 is supplied from the battery from the line of maxifuse CPL B99 - pin 18 of connector F, while the ignition-operated power supply (INT) reaches pin 9. The line leading from pin 29 of connector A is a serial line W leading to engine management unit M10 - which is responsible for the communication required for identifying the key and exchanging codes.This communication takes place via the CAN network in the case of normal operation. Body Computer M1 is linked to instrument panel E50 , via the CAN line to manage the CODE failure warning light. The aerial of CODE device P91 is connected via two leads to the CODE unit of M1 , at pins 4 and 5 of connector A; The aerial is located coaxially on the ignition switch so that it can register key insertion and activation. The various aerials in the car identify the presence of a CID inside the passenger compartment and inform the Passive Entry control unit M64; this sends start-up enablement to the Body Computer M1 SeeE7018 PASSIVE ENTRY via the CAN network.
0Removing201Refitting21Disconnect the negative battery terminal.1. Remove the junction unit protective cover.192009560
5505A35
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.Disconnect the battery negative terminal.3363361-7040A44facia lh side cover - r r1. Disconnect the front electrical connectors of the junction unitcomplete with body computer.2. Unscrew the retaining bolts.3. Remove from its seating the junction unit complete with bodycomputer.4. Disconnect the rear electrical connectors of the junction unitcomplete with body computer.2027438
5505A36
0Removing201Refitting211. Separate the junction unit (1a) from the body computer (1b),by releasing the retaining lugs (1c).2027440
5505A41
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.Disconnect the battery negative terminal.3363151-5580C18air bag module - r+r . 769- 4110A16 steering wheel - r r for replacement or checks forversions with airbag and manual gearbox with hydraulic selection . 1. Disconnect the electrical connectors (1a) and remove the controlunit (1b) from its seating.2027441
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.1. Release the clips and remove the protective cover for the uniton the battery.2. Undo the bolts (2a) and remove the battery fixing bracket (2b).3. Slacken the nut and disconnect the battery's negative terminal.2027495
5530B52
0Removing201Refitting21Op. 5530B56 BATTERY DRIP TRAY COVER - R.R.3363098Op. 5530B10 BATTERY - R+R3363096- Disconnect the engine management unit electrical connections.Release the wiring from the retaining bands.1. Undo the rear fixing bolt (1a), release the front fastenings (1b) and place the engine compartment junction unit (1c) at the side.192008351
5530B56
0Removing201Refitting211. Undo the fixing bolts (1a) and remove the battery cover (1b).2027502
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER- R.R.Disconnect the battery negative terminal.3363357-7040A26steering column trim - r+r1. Undo the bolts fixing the analogue instrument panel trim.2. Remove the trim under the instrument panel.3. Undo the upper bolts fixing the instrument panel to the dashboard;then partly release the panel.2027547
767 It is not possible toorder a single lock barrel or to order barrels using a single partcode. When ordering barrels, observe the special procedure illustrated 3363161See assembly5580E anti-theft device .
0Removing201Refitting21Disconnect the negative battery terminal.1. Disconnect the electrical connection for the PDA electropneumatic valve.2. Disconnect the two vacuum pipes from the PDA electropneumatic valve.3. Remove the PDA electropneumatic valve.192007968
1056B33
0Removing201Refitting21Disconnect the negative battery terminal.1. Disconnect the electrical connection for the PDA position sensor.2. Undo the retaining bolts (2a) and remove the PDA position sensor (2b).192007970
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER - R.R. . Disconnect the battery negative terminal.Remove the injection wiring from the area.1. Disconnect the electrical connector for the sender unit.2. Undo and remove the sender unit.2024995
0Removing201Refitting21Op. 5530B56 BATTERY DRIP TRAY COVER - R.R.3363098.Disconnect the negative battery terminal.1. Disconnect the electrical connection for the sensor.2. Undo the fixing bolt (2a) and remove the sensor (2b).192007915
1056B56
0Removing201Refitting21Disconnect the battery negative terminal.1. Disconnect the electrical connection from the engine idle speedself-adjustment motor.2. Undo the bolts (2a) and remove the engine idle speed self-adjustmentmotor (2b).2025359
0Removing201Refitting21Discharge the fuel pressure using the toolconnected to the valve on the fuel manifold pipe.1. Disconnect the rapid attachment for the fuel supply pipe andrelease the latter from the fixing band.2025196
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER - R.R.Disconnect the battery negative terminal.1. Remove the clip securing the injector to the fuel manifold.2. Remove the injector from its seat.3. Remove the injector seals2025001
The manual procedure and the teser procedurefor re-initalising the electronic ignition/injection control unit isshown below.767When the car is first started,carry out the following operations whenever the throttle body or enginemanagement unit is replaced.769Procedure using testerMake sure that the ignition key is in theOFF position.Connect the tool to the tester input andplace the knob in position 3.Connect the Examiner diagnostic equipment.Turn the ignition key to ON position (engineoff).Wait for the test to be run on the throttlebody, when the tester will confirm that Turn the ignition key to the OFF position.Using the Examiner, check that the self-learningof idle speed has finished correctly ( LOWER THROTTLE BED SELFLEARNING-completed)767If the self-learning procedureis not correct, turn the ignition off (STOP position) and repeatthe above procecure. If the incorrectness continues, check thatthe diagnostic cable connection is secure and that the instrumentis working.Manual procedureTurn the ignition key to ON position (engineoff)Wait 60 seconds, the time required forthe control unit to check the throttle body's internal spring andthe butterfly's maximum/minimum angles.Turn the ignition key to the OFF positionWait 10 seconds, the time required forthe control unit to save the learnt values in EPROM.767After carrying out initialisation,the engine control unit may be deactivated (battery disconnection)without losing data.
1056B82
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER - R.R. . Disconnect the battery negative terminal.1. Disconnect the electrical connections (1a) for the injectioncontrol unit (1b) using the lever (1c).2. Undo the fixing bolt (2a) and disconnect the control unit earthlead (2b).3. Undo the fixing nuts (3a) and remove the injection control unit(3b) from support (3b).2025002
0Removing201Refitting21Position the vehicle on a lift. 1016A10 COPERCHIO INSONORIZZANTE - S.R.3355014Op. 5530B56 BATTERY DRIP TRAY COVER - R.R.3363098Disconnect the negative battery terminal.Op. 7055B54 UNDER ENGINE PROTECTION/GUARD - R.R.33634881. Undo the nuts (1a) and move the cable duct protection (1b).2. Disconnect the electrical connection for the rpm sensor.3. Disconnect the electrical connection for the detonation sensor.4. Disconnect the electrical connection for the engine oil pressure warning light switch.5. Disconnect the electrical connection for the starter motor.6. Disconnect the electrical connection for the alternator.192007933
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER - R.R.Disconnect the battery negative terminal.1. Disconnect the water temperature sensor electrical connection.2. Undo the thermostat water temperatur sensor and remove.2025763
0Removing201Refitting21Place the car on a ramp.3363098-5530B56BATTERY DRIP TRAY COVER - R.R.Disconnect the battery negative terminal.1. Disconnect the electrical connection for the rpm sensor.2. Undo bolts (2a) and remove rpm and timing sensor (2b).2025765
0Removing201Refitting213362539-1016A10sound-proofing cover - r + r1. Disconnect the solenoid electrical connection on the vacuum tankfor the throttle body pneumatic valve.2. Disconnect the vacuum pipe from the solenoid on the vacuum tankfor the throttle body pneumatic valve.3. Unscrew the bolt securing the pneumatic valve4. Remove the solenoid for the pneumatic valve on the vacuum tank.2025773
0Removing201Refitting213363098-5530B56BATTERY DRIP TRAY COVER - R.R.Disconnect the battery negative terminal.1. Disconnect the electrical connection from the injection electroniccontrol unit.2. Undo nut (2a) and release earth lead (2b).3. Undo the retaining bolts.4. Remove the engine management control unit from its housing.2025774
0Removing201Refitting213363543-7210E66R.R. REAR BUMPER1. Disconnect electrical connection (1a) and undo securing bolts(1b)2. Remove the passive entry aerial2027586
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