DescriptionThis vehicle features a CAN network (Controller Area Network) system of electrical connections: it involves a software and hardware solution which is designed to manage the resources on the vehicle in an increasingly efficient way, allowing:data to be shared between the various electronic units;the integration of several electronic units in one network;a high data exchange speed in the network;cost-effective solutions, since the number of wiring harnesses and connectors are considerably reduced in the vehicle;a higher standard in terms of quality and reliability.The advantage of using a CAN system stems from the fact that the communication involves numerous control units and consequently the number of signals managed is very high.For this reason the signals 'travel' on CAN type (double) serial Bus, where one wire is associated with the high level (H) and the other the low level (L); These CAN Bus signals are differential, i.e. the value assigned to each bit is represented by the different voltge of CAN-H and CAN-L.The various electronic units which make up the system, known as network 'Nodes', are connected to the CAN by means of communication interfaces known as transreceivers; These connection interfaces, integrated in the actual electronic units, form the gates for sending/reading information at the CAN or at the serial lines.A 'transmission protocol', i.e. the set of rules allowing the communication between two or more ECUs (called Nodes) by means of data or data package exchanges, is required for CAN serial line data circulation.The main element in the network is the Body Computer.The Body Computer node 'wakes the system up' when the ignition key is turned to the ON position (if there is a Body Computer failure, the task of waking the system up is entrusted to the instrument panel).The Body Computer also carries out the functions of controlling the network, which makes it possible to supply information on:the network activity status;the functional failure status of the individual electronic units (nodes);the possible CAN failure.The various electronic units process the various signals coming from their sensors both for their own management and for the other control units, to which they are sent via the CANThe specific structure adopted on this vehicle consists of two CANs which connect nodes belonging to two different areas:C-CAN for 'dynamic control' of the vehicle (high speed): bus CAN-H and CAN-L;B-CAN for the management of 'bodywork functions' (low speed): bus CAN-A and CAN-B;te two CAN communication networks are connected to one another by means of a gateway for transferring joint information, located in the Body Computer Node. The fault diagnosis of the nodes connected to the B-CAN is achieved via the CAN, whilst for those connected to the C-CAN require the specific K lines 2399396SeeE8010DIAGNOSTIC MULTIPLE CONNECTOR . The system also uses additionional 'traditional' serial lines for the various connections; for example, in the connection between the Body Computer and the rain/dusk sensor 2399168SeeE2010SIDE LIGHTS / NO. PLATE LIGHTS2399226SeeE3020WINDSCREEN WASH/WIPE . The distribution of power takes place via the junction units and/or fuse boxes, connected to the control elements (relays and static actuators) in order to ensure the maximum level of electrical protection and the minimum degree of wiring complexity 2399155SeeE1010SUPPLY .
Functional description The Body Computer M1 is supplied directly by the battery from the line protected by the maxifuse F1 of the engine compartment junctio unit B1 at pin 18 of connector F of the interface with the underdashboard control unit B2. The Body Computer M1 receives a supply controlled by the ignition (INT) at pin 9 of connector F of the interface with the underdashboard control unit B2 : this signal is designed to 'wake up the network'. Pin 8 of connector I and 10 of connector H of M1 are earthedThe nodes connected to the Body Computer M1 from pins 36 and 37 of connector B - via the C-CAN high-speed link are:electric steering control unit M86 ;engine management control unit M10 ;ABS control unit M50 ;The following nodes are connected to the Body Computer M1 via the B-CAN low speed network:underfacia control unit B2 ;instrument panel E50driver door control unit M66 , passenger door M67 ;boot control unit M63 ;steering wheel control unit M93;radio P20;climate control system control unit M70 ;parking sensor control unit M84 ;Air Bag control unit M60.
<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).2050746
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400802-7040A37fuse box cover - r r1. Disconnect the electrical connections (1a, 1b, 1c, 1d, 1e, 1f).2. Undo the bracket retaining bolt.3. Slightly move the bracket (3a) for the dashboard trim and undothe bolt (3b).4. Undo the other bolts securing the body computer/junction unit.5. Slightly move the body computer/junction unit assembly.6. Disconnect the electrical connections (6a, 6b, 6c).7. Recover the body computer/junction unit.2050752
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect electronic control unit electrical connections (1a),(1b), (1c).2. Undo the bolts.3. Recover the control unit.2050753
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect electronic control unit electrical connections (1a),(1b), (1c).2. Undo the bolts.3. Recover the control unit.2050754
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.Ensure the battery is disconnected.1. Undo the nut.2. Move the sensor (2a) and disconnect the electrical connection(2b).3. Recover the sensor.2050852
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 2400123-1048A32sleeve from air cleanerto intake manifold - r + r1. Disconnect the electrical connection from the throtle body integratedwith the M.D.S.2. Undo the bolts (2a) and move the mounting bracket (2b) aside,complete with injection-ignition system control unit (2c). 3. Undo the remaining bolt (3a) and remove throttle body with integralMDS (3b) 2049708
1056B50
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 2400123-1048A32sleeve from air cleanerto intake manifold - r + r1. Disconnect the electrical connection from the engine coolanttemperature sensor.2. Undo and remove the engine coolant temperature sensor.2049709
1056B51
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 2400120-1048A10air cleaner filtering element- replace1. Disconnect the electrical connection from the cam angle sensor. 2. Undo the bolt (2a) and remove the cam angle sensor (2b). 2049710
1056B54
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the intake air temperature/pressuresensor.2. Undo the bolts (2a) and remove the intake air temperature/pressuresensor (2b).2049711
1056B60
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 2400120-1048A10air cleaner filtering element- replace1. Undo the fuel manifold pipe protective plug (1a) and use tool(1b) to drain fuel system pressure. 23Recover the fuel which comes outin a suitable container. 2. Disconnect the rapid attachment for the fuel supply pipe fromthe fuel manifold pipe.3. Disconnect the electrical connections from the injectors.Release the injector electrical wiringfrom the fixings and move it aside. 2049712
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the safety clip.2. Remove the injector.2049714
1056B78
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the switch on the clutchpedal. 2. Rotate and remove the switch on the clutch pedal.2049715
1056B82
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connections (1a) and (1b) from theinjection/ignition system control unit. 2. Undo nut (2a) and disconnect earth lead (2b) from the injection-ignitionsystem control unit. 3. Undo the remaining nuts (3a) and remove injection/ignition controlunit (3b) from the bracket. 2049716
1056B87
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 2400134-1056B82injection/ignition systeme.c.u. (one) - r + r1. Undo the bolts (1a) and remove the injection/ignition controlunit mounting (1b).2049717
1056B90
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp Proceed with removal 2400577-5530B10battery - r+r Proceed with removal 2400580-5530B52Battery DRIP TRAY/SUPPORT- R.R. Proceed with removal 2400120-1048A10air cleaner filtering element- replace1. Loosen the band and disconnect the engine oil vapour intake pipeand the side of the sleeve from the air cleaner to the intake manifold2. Loosen the band, disconnect the hose from the air filter to theintake manifold, intake manifold side and remove it.2049718
pressure pump electric control
1060G10
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the air flow meter. 2. Loosen the band and disconnect the the turbocharger air inletsleeve from the rigid pipe, air flow meter side.3. Undo the bolts (3a) and remove the air flow meter (3b).2050095
1060G14
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp Proceed with removal 1. Loosen the band and disconnect the lower radiator coolant outlethose from the radiator, radiator side.23Collect the engine coolant ina suitable container.2050096
1060G16
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the air flow meter. 2. Loosen the band and disconnect the the turbocharger air inletsleeve from the rigid pipe, air flow meter side.2050099
1060G20
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection for the rpm sensor.2. Undo the bolt (2a) and remove the engine rpm sensor (2b). 2050102
1060G22
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the rampEnsure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the air flow meter. 2. Loosen the band and disconnect the the turbocharger air inletsleeve from the rigid pipe, air flow meter side.2050104
1060G28
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the air flow meter. 2. Loosen the band and disconnect the the turbocharger air inletsleeve from the rigid pipe, air flow meter side.2050107
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Disconnect the electrical connection from the air flow meter. 2. Loosen the band and disconnect the the turbocharger air inletsleeve from the rigid pipe, air flow meter side.2050115
1060G90
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp Proceed with removal 2400577-5530B10battery - r+r Proceed with removal 2400580-5530B52Battery DRIP TRAY/SUPPORT- R.R.1. Disconnect the electrical connection from the air flow meter. 2. Loosen the band and disconnect the the turbocharger air inletsleeve from the rigid pipe, air flow meter side.2050119
abs check/adjustment devices
3340A12
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with removal 2400577-5530B10battery - r+r1. Remove the protective cap on the brake caliper bleed valve. 2. Connect the collection system (pipe and reservoir) to the bleedvalve on the brake caliper. 3. Loosen the bleed valve on the brake caliperWait for the brake-clutch reservoir todrain.2050481
3340A13
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with removal 2400577-5530B10battery - r+r Proceed with removal 2400367-3340A12A'B.S. system. - electronicand hydraulic CONTROL UNIT R.R.1. Release the right brake pipe from the band on the A.B.S. controlunit mounting.2. Undo the nuts (2a) and the bolt (2b) and remove the A.B.S. controlunit mounting (2c).2050485
3340A20
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting2123-. For versions with ESP, theA.B.S. electronic control unit is handled individually by the Parts Department,but supplied together with the hydraulic control unit. Proceed with removal 2400577-5530B10battery - r+r Proceed with removal 2400367-3340A12A'B.S. system. - electronicand hydraulic CONTROL UNIT R.R.1. Undo the bolts (1a) and separate ABS electronic control unt (1b)from the hydraulic assembly.2050486
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21.23The following procedure describesremoval/refitting of the left rear wheel rpm sensor; proceed asfor the right rear wheel rpm sensor.Position the vehicle on the rampEnsure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). 1. Undo the bolt (1a) and remove the rear wheel rpm sensor (1b).2. Release the rear wheel rpm sensor electrical wiring from theattachments on the rear suspension.2050491
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400797-7040A19cushion padding - rr1. Unscrew the motor retaining bolt.2. Disconnect the motor electrical connection.3. Remove the motor releasing the intake.2050724
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400797-7040A19cushion padding - rr1. Unscrew the motor retaining bolt.2. Disconnect the motor electrical connection.3. Remove the motor releasing the intake.2050726
5040D94
23
5040D96
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400797-7040A19cushion padding - rr1. Unscrew the motor retaining bolt.2. Disconnect the motor electrical connection.3. Remove the motor releasing the intake.2050728
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on a liftand raise it.1. Undo the rear bumper lower bolts.2. Slightly lower the bottom edge (2a) of the bumper and disconnectthe parking sensor electrical connection (2b). 2050878
5580H10
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the tailgate.1. Working on the left wing of the luggage compartment, disengagethe retainer (1a), then the retainers (1b) and remove the flap (1c). 2. Undo the bolt.3. Disconnect the electrical connections.4. Remove the control unit.2050880
5580H36
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on a liftand raise it.1. Undo the rear bumper lower bolts.2. Slightly lower the bottom edge (2a) of the bumper and disconnectthe parking sensor electrical connection (2b). 3. Remove the parking sensor (3a) concerned, releasing it from theretainers (3b).2050881
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Undo the bolts.2. Remove the trim (2a) releasing the retainers (2b).2051090
7040A26
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Undo the bolts.2. Remove the bottom trim (2a). To facilitate trim removal, movethe steering column after releasing the steering column positionadjustment lever (2b). 3. Undo the bolts.4. Remove the top trim.2051091
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Undo the cover bolts.2. Remove the cover (2a) by undoing the retainers (2b).2051094
7040A44
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the trim (1a) releasing the inner retainers (1b) usingthe special tool.2051095
7040A45
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the trim (1a) releasing the inner retainers (1b) usingthe special tool.2051096
7040A56
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400802-7040A37fuse box cover - r r1. Undo the bolt.2. Move the trim (2a) by undoing the internal retainers (2b).3. Disconnect the electrical connections of the switch unit.4. Recover the panel with the switches.2051097
7040A65
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Undo the bolt.2. Remove closure (2a) by undoing internal retainers (2b).2051099
7040A78
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Extract compartment (1a) slightly after undoing retainers (1b).2. Disconnect the radio electrical connection.3. Disconnect the aerial lead connection.4. Recover the compartment2051100
7040A96
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Open the flap.2. Undo the bolts.3. Remove the door.2051101
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