DescriptionWhen required, the climate control system ECU automatically activates the cooling circuit and dehumidifies the air by operating the air conditioner compressor. For more details 3308537see DESCRIPTION AND OPERATION:5040AIR CONDITIONING CASING AND COMPONENTS . The compressor may also be deactivated by the 4-stage pressure switch or the engine management unit according to the engine management software, which is different for each engine version ( 3308466see DESCRIPTION AND OPERATION:1056PETROL INJECTION SYSTEM ) The compressor supply circuit is controlled by a specific relay, located in the engine bay close to the battery.The relay contact line is protected by a special fuse located in the junction unit.
Functional description767 A specific button on the climate control controls unit H80 enables the operation of the air cooling circuit; but the switching on of the compressor is managed by the control unit M70 in accordance with a complex operating logic (for more details, see see DESCRIPTION AND OPERATION:5040 AIR CONDITIONING CASING AND COMPONENTS ) Relay R3 , connected to relay unit B3 , controls the compressor activation circuit. The relay is supplied with power directly from the battery - junction unit A5 - by a line protected by a special fuse F5 , also located in B3 . The coil receives a supply controlled by the ignition (INT/A) from the line of fuse F5 ; the relay is thus energized by an earth signal coming from the engine management control unit M10 : in this way the air conditioning compressor L20 engagement electro-magnet is operated through a voltage of 12 V. Climate control unit M70 - pin 6 of connector B - sends a compressor enablement signal to four-stage pressure switch K10 . If circuit pressures are correct, the signal leaves the pressure switch to engine control unit M10 : Control unit M10 uses its own internal software to send a control to activate the compressor, which in turn excites relay J20 .
0Removing201Refitting213314824-5505A18multi-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
0Removing201Refitting21 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
0Removing201Refitting21Open the bonnet lid.1. Release the retainers (1a) and remove the cover (1b) for theadditional junction unit.2071293
0Removing201Refitting213314864-5530B54battery 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
0Removing201Refitting213314864-5530B54battery cover - r+r1. Press and release the retainers (1a), then remove the cover (1b)for the supply box on the battery. 2071303
1Refitting210Removing20.767The fuel tank is supplied by theParts Dept. together with the multifunction valves (which cannotbe dismantled) and the immersed pump assembly complete with gauge.Therefore if the tank has to be replaced it is not possible to reuse theimmsered pump assembly complete with gauge removed, but a new pre-assembledunit consisting of a tank - pump - multifunction valves suppliedby the Parts Dept. must be fitted.Move the fuel tank closer to its housingusing the hydraulic jack and connect the supply pipes to the fuel vapourseparator.Refit the fuel tank in its seating andsecure with its bolts.Remove the hydraulic jack from under thefuel tank.1. Replace the rear suspension crossmeber (1a) in its housing usingthe hydraulic jack (1b) and fix it tightening the bolts (1c) tothe recommended torque.Remove the hydraulic jack from under thecrossmember.2007293
0Removing201Refitting21Open the access flap to the fuel fillerpipe cap.Undo and remove the fuel filler pipe cap.
1040A70
769
1040A74
0Removing201Refitting21- 7045A10 l/h or r/h front seat (one) - r+r . 1. Cut the floor carpet along the marked line.2. Undo the bolts fixing the inertia switch to the bodyshell.3. Disconnect the electrical connection (3a) and remove the inertiaswitch (3b).2007309
0Removing201Refitting21 Make sure that the ignitionis off (STOP position), then disconnect the negative battery terminal(refer to op. 33148615530B10battery - r+r ). 3314767-5040A10Air conditioning refrigerant CIRCUIT - Draining andRefilling . 1. Disconnect the electrical connection for the air conditioningsystem multi-stage pressure switch.2. Undo and remove the air conditioning system multi-stage pressureswitch.2010547
5040B30
768
Air conditioning compressor engagement electro-magnet
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting211. 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting21 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
0Removing201Refitting211. 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
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