DescriptionA control system supervises and governsthe operation of the manual gearbox via an electrohydraulic deviceto create a robotised gearbox system.The system operates in two modes:semiautomatic mode (MANUAL): the driver manages gear engagementvia the lever located on the tunnel.automatic mode (AUTO): the decision to change gears isdelegated to the electronic system, in accordance with two strategies,the first aiming for driving comfort (NORMAL), the second aimingto limit fuel consumption (ECO).The electronic control unit communicateswith the engine management control unit via the CAN network andtwo dedicated lines, one for the engine rpm signal and one for diagnostics.The control unit drives, by means of a complexoperating logic, an electrohydraulic unit located on the gearbox,via a specific electric pump.Control unit self-diagnosis notifies ofthe onset of these faults via a special warning light in the instrumentpanel: The control unit sends the instrument panel information onthe speed engaged. This is shown on the display. For more details, 2427413Characteristic of working principle2127ELECTRO-HYDRAULIC SELECTION.GEARBOX EXTERNAL. CONTROLS . The supply lines to the control unit andthe various system components (sensors and actuators) are protectedby two fuses located in the underfacia control unit.A special fuse in the engine compartmentjunction unit supplies the system control pump line. For more details, 2427413Characteristic of working principle2127ELECTRO-HYDRAULIC SELECTION.GEARBOX EXTERNAL. CONTROLS .
Functional description The automatic transmission control unit M54controls and governs the entire gearbox management system. The direct supply for the control unit arrivesfrom the battery, from the line for fuse F23 of the engine compartmentjunction unit B1, at pin 27 of connector A of M54. The supply controlled by the ignition (15/54)reaches pin 28 from connector A of M54 via the line for fuseF16 of junction unit B1. Pins 1 and 2 of connector A of M54 areearthed. A set of sensors and potentiometers on thegearbox informs the control unit of the engaged gear: the potentiometersare supplied from pin 73 of connector B; pin 66 provides the referenceearth: the gear selector potentiometer K68 provides a signalto pin 51 of connector A; the gear engagement potentiometer K69 returnsa signal to pin 39 of connector A; the hydraulic unit oil pressuresensor K96 returns a signal to pin 40 of connector A. The clutch position potentiometer K95 issupplied from pin 79 of connector B, receives a reference earthfrom pin 59 and returns a signal to pin 52 of connector A of M54 . Pins 38 and 50 of connector A M54 areconnected to the car speed sensor (gearbox input) K77 . The gear control unit H37 is connectedto the control unit M54 to signal the request to engage agear: these signals are sent to pins 67, 74, 68 of connector B of M54 ;and to pin 26 of connector A; a reference earth is received frompin 66 of connector B, whilst the supply arrives from the line controlledby the ignition (15/54) protected by fuse F16 of engine compartmentjunction unit B1 The operating mode selection button 'E' H34is connected to the control unit M54 at pin 77 of connector B. This button receives a supply from the line (INT) protected by fuse F51of the junction unit under the dashboard B2. Pin 69 of connector B of M54 receivesthe signal coming from the brake lights switch I30, with the supplycontrolled by the ignition (INT) from fuse F37 of underfacia junctionunit B2. In accordance with the operating logic,the control unit controls the electrohydraulic unit located on thegearbox which effects the gear change: the electric pump N47 ,which keeps the oil in the hydraulic unit under pressure, is controlledfrom pin 31 of connector A. The pump N47 is controlled by a specificrelay J87 supplied by the line for the specific shunt fuse B43.The control unit then controls theopening of the hydraulic unit solenoids:the two gear engagement solenoids L51 and L52 arecontrolled from pins 32 and 44 of connector A of M54 ;the two gear selection solenoids L53 and L54 arecontrolled from pins 29 and 3 of connector A of M54 ;the clutch control solenoid L56 is controlled frompin 43 3 of connector A of M54 . A safety signal comes from pin 42 of connectorA of M54 for the starting enablement relay pin 50 of the startermotor A20; the signal requesting starting reaches pin 76 of connectorB 2428036SeeE5010STARTING AND RECHARING . The control unit M54 also managesthe door open buzzer: the driver's door open signal - catch N50 - reaches pin 78 of connector B of M54 ; Signals for the gearbox failure warninglight in instrument panel E50, and the instrument gear indicationdisplay, are sent via the CAN network - pins 33-45 and 7-19 of connector Aof M54.The speedometer signal is downloaded viathe CAN network. Pin 48 of connector A is connected to enginemanagement control unit M10 , from which it receives an enginerpm signal. The control for the buzzer, located in theinstrument panel E50, leaves from pin 80 of connector B. Self-diagnostic data can be read by connectingthe unit to connector G of Body Computer M1 - pin 7: this receivessignals from pin 49 of connector A of M54. (the line is shared withthe engine control unit M10 via the relevant tester line.
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then loosen the bolt and disconnect the battery negative(-) terminal.Undo the bolt and disconnect the batteryterminal (+).Undo the battery belt nut.Remove the battery.
5530B22
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212429398-5530B10battery - r+r2429401-5530B52Battery DRIP TRAY/SUPPORT - R.R.Open the bonnet lid.1. Disconnect the electrical connection (1a) from the negative batteryterminal (1b).2. Disconnect the electrical connection from the bodyshell.3. Disconnect the electrical connection from the gearbox casing.4. Keep the battery earth lead.2052930
5530B36
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the vehicle on a lift.Raise the car.1. Undo the nut (1a) and disconnect the electrical connections (1b,1c) from the starter motor.2052931
5530B52
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with removal 2429398-5530B10battery - r+r . 1. Remove drip tray.2. Undo the fixing bolts (2a) and remove the battery cradle (2b)after releasing the electrical wiring from the bands on the cradle.2045035
<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).2044997
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212429579-7040A30Left instrument panellower TRIM - R.R.1. Disconnect the electrical connections (1a, 1b, 1c, 1d, 1e, 1f).2. Undo the left-threaded bolt securing the facia trim mount beam.3. Undo the bolts securing the body computer/junction unit.4. Move facia trim (4a) slightly and move body computer/junctionunit (4b) downwards.5. Disconnect the electrical connections (5a, 5b, 5c).6. Recover the body computer/junction unit.2045005
<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 unit2045007
<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 unit2045008
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-).1. Disconnect the brake light switch electrical connection.2. Turn and remove the brake light switch.2045071
5550D16
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the tailgate.1. Prise up the rubber pads.2. Press the tail-light retainers in the arrowed direction and releasefrom the seat.2045072
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-).1. Disconnect the electrical connection from the reversing lightsswitch.2. Undo and remove the reversing lights switch.2045076
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal 2428915-1048A10air cleaner filtering element- replace . 1. Disconnect the accelerator cable (1a) from the throttle valvedrive (1b), release from the mounting bracket (1c) and move aside.2043751
1056B50
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal 2428915-1048A10air cleaner filtering element- replace . 1. Disconnect the electrical connection from the engine coolanttemperature sensor.2. Loosen the band and disconnect the coolant return pipe to theclimate control heater, engine coolant temperature sensor side.767Recover the coolant which comesout in a suitable container.3. Undo bolts (3a) and remove coolant temperature sensor (3b) bywithdrawing downwards.2043753
1056B51
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-).1. Disconnect the electrical connection from the cam angle sensor.2. Undo the bolt (2a) and remove the cam angle sensor (2b).2043754
1056B54
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative 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).2043755
1056B60
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal 2428915-1048A10air cleaner filtering element- replace . 1. Undo the fuel manifold protection plug and use tool (1b) to discharge the pressure from the fuel system.767Recover the fuel which comes outin a suitable container.2043756
1056B68
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with removal ,remembering that you are working on all the fuel injectors.
1056B70
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the safety clip.2. Remove the injector2043758
1056B78
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-).1. Disconnect the electrical connection from the switch on the clutchpedal.2. Rotate and remove the switch on the clutch pedal.2043759
1056B82
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal 2428915-1048A10air cleaner filtering element- replace . 1. Undo retainers (1a) 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).2043760
1056B15
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal 2428998-1048A32sleeve from air cleanerto intake manifold - r + r . 1. 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)2043975
1056B87
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal 2428928-1056B82injection/ignition systeme.c.u. (one) - r + r . 1. Undo the bolts (1a) and remove the injection/ignition controlunit mounting (1b).2043984
1056B90
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp. Proceed with removal 2429398-5530B10battery - r+r . Proceed with removal 2429401-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 2428915-1048A10air cleaner filtering element- replace . 1. 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.2043985
pressure pump electric control
1060G10
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative 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).2052636
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.767Collect the engine coolant ina suitable container.2052637
1060G16
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative 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.2052640
1060G20
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-). Proceed with removal . 1. Disconnect the electrical connection for the rpm sensor.2. Undo the bolt (2a) and remove the engine rpm sensor (2b).2052643
1060G22
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp.Ensure that the ignition key is in OFFposition, then disconnect the battery negative 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.2052645
1060G28
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative 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.2052648
1060G38
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-).1. Disconnect the electrical connection from the switch on the brakepedal.2. Rotate and remove the switch on the brake pedal.2052652
1060G42
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative terminal (-).1. Disconnect the electrical connection from the clutch pedal switch.2. Rotate the clutch pedal switch and remove it.2052653
1060G80
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in OFFposition, then disconnect the battery negative 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.2052654
1060G90
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp. Proceed with removal 2429398-5530B10battery - r+r . Proceed with removal 2429401-5530B52Battery 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.2052657
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