AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v fino a 03/98 – CRUISE CONTROL – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  fino a 03/98 – CRUISE CONTROL –  – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
B1Junction unit5505A
B98Supplementary fuse box5505A
D1Front / dashboard connection-
D1Front / dashboard coupling-
E30Check control5560C
H1Ignition switch5520A
H7Cruise Control5580A
I30Brake pedal switch5550D
M10Engine management ECU-
M10Engine management ECU1056B
M10Engine management control unit-
M10Engine management control unit1056B
M10Engine management control unit1060G
Location of components

Components
Component codeNameAssembly reference
B1Junction unit5505A
B98Supplementary fuse box5505A
D1Front / dashboard connection-
D1Front / dashboard coupling-
E30Check control5560C
H1Ignition switch5520A
H7Cruise Control5580A
I30Brake pedal switch5550D
M10Engine management ECU-
M10Engine management ECU1056B
M10Engine management control unit-
M10Engine management control unit1056B
M10Engine management control unit1060G
DescriptionThe Cruise Control function allows the vehicleto always be driven at a constant speed without pressing the acceleratorpedal.The function is managed by the engine controlunit which receives a command from the special Cruise Control leveron the left of the steering wheel, under the steering column switchunit.When the function is switched ON, the LEDin the lever comes on.When a speed is set (SET +, SET -) it remainsmemorized and can be recalled at any time (RCL).The function is automatically switchedoff:by pressing the brake pedal;by pressing the clutch pedal;by placing the lever in N (automatic transmission).When the function is switched OFF, the speedmemorized is lost.A warning light on the instrument panel(check module) indicates system activation. For more details, 3232971Characteristicof working principle5580Acruise control systemThe Cruise Control system supply line isprotected by a fuse in the junction unit which also protects othersupplies controlled by the ignition.
Functional description The Cruise Control function is controlledby engine management unit M10 upon a command from the CruiseControl switch H7 located to the left of the steering wheel. The switch H7 is supplied when theignition is switched on (INT) from the line protected by the fuse F1 forthe junction unit B1 . Control H7 is connected to managementunit M10:to pin 77 of connector A, with the ON/OFF signalto pin 38 of connector A, with the RES signalto pin 56 of connector A, with the SET + signalto pin 78 of connector A, with the SET - signal The 'pedal released' signal for the dualswitch I30, on the other hand, is sent to the engine managementcontrol unit M10 - pin 80 of connector A. For the management of the Cruise Controlfunction the control unit also uses the signal at pin 79 of connectorA of M10 coming from the clutch pedal switch I31 and the acceleratorpedal potentiometer K55 See E5050 DIESEL ENGINES ELECTRONICMANAGEMENT signals. To turn on the Cruise Control warning light,engine management unit M10 sends a signal - pin 49 of connectorA - to check module E30 which is supplied by a line protected byfuse F4 of the additional fuse box B98B.

Junction unit



B1A



B1A



B1B



B1B



B1B



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1C



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1D



B1E



B1E



B1E



B1F



B1F



B1G



B1G



B1G



B1G



B1H



B1H



B1I



B1I



B1I



B1I



B1I



B1I



B1I



B1J



B1J



B1J



B1J



B1J



multi-function components



5505A10


769

5505A16


769

5505A18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238830-7040G24switch for facia compartmentlight - r+r3238829-7040G20facia compartment light bulb holder - r+r3238795-7040A31flap assembly - r r1. Undo the bolts.2. Move the integrated service control unit slightly.3. Disconnect the electrical connections (3a, 3b, 3c).2018617

5505A30


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Remove components obstractingaccess to earth carrier node.1. Unscrew screw.2. Disjoin earth carrier node.2018618

5505A38



Supplementary fuse box



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98A



B98B



B98B



B98B



B98B



B98B



B98C



B98C



B98C



Front / dashboard connection



D1B



D1B



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



D1



other instruments



5560C51


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238343-5040D22control (one) of airconditioner control support - arrange3238986-7065C42ashtray (one) r+r3238514-5570T80car radio unit - r+r3237934-2125C24gear lever knob - r + r3238802-7040A60under facia trim - r+r1. Unscrew the bolts2. Move the analogue instrument panel.3. Disconnect the electrical connection and keep the instrument.2018851

5560C60


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the component with theIU+2019 special tool .2. Disconnect the electric connection and remove the component.2018855

5560C64



Ignition switch



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1A



H1B



H1B



H1B



H1B



H1B



H1B



ignition switch



5520A12


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238121-4110A11steering wheel - r+rfor replacement or check for versions with air bag3238793-7040A26steering column trim - r+r3238476-5550A12complete stalk unit - r+r for versions with air bag1. Disconnect electric connection from ignition switch.2. Unscrew screws (2a) and remove starter switch (2b). 2018661

5520A14


769

5520A16


769

5520A18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Unloose fixing screws and removesteering column guide.1. Detach down-lead cable.2018668

Cruise Control



H7



H7



H7



H7



H7



cruise control system



5580A10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238527-5580C18air bag module - r+r7683238121-4110A11steering wheel - r+r for replacement or check forversions with air bag3238793-7040A26steering column trim - r+r3238476-5550A12complete stalk unit - r+r for versions with air bag1. Unscrew the bolts2. Rotate the Cruise Control lever (2a) slightly until the retainer(2b) is released from the steering column switch unit casing. 2018884

brake and reversing lights



5550D10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect the electrical connection.2. Turn IU+2019 switch (2a) anticlockwisely of about 60° and extractit.To make the opening easier operate by a wrench on the exagonalsection (2b) of the IU+2019 switch. 2018839

5550D14



5550D16


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Open the boot lid, turn and undo the lower studs securing theupper trim.2. Lower upper trim (2a) and unscrew knob (2b) securing the thirdbrake light.3. Prise out the brake light and remove.4. Prise electrical connection (4a) out of support (4b) and disconnect.Recover the light cluster.2018841

5550D17


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238489-5550D16third stop light - r+r1. Unscrew the bolts and remove the mount from the light.2. Undo the bolts.3. Remove the bulb holder.4. Remove the bulbs (press-fit type)2018843

5550D18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238117-3380A44handbrake/linkage protection- r+r1. Unscrew the screw.2. Move IU+2019switch.3. Disconnect the electrical connection and recover IU+2019switch.2018844

5550D22


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the car on an auto lift.1. Lift the car and disconnect the electrical connection of thereserving light switch.2. Unscrew and take the reserve light switch off.2018845

5550D26



Engine management ECU



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10A



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10B



M10C



M10C



M10C



M10D



M10D



M10D



M10D



M10E



M10E



M10E



M10E



M10F



M10



M10A



M10A



M10A



multi-point injection system (mpi)



1056B09


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative (-) terminal.1. Disconnect the electrical connection from the hot-film air flowmeter. Move the relays fastened to the batterycradle to one side.2. Disconnect the pipe carrying air to the throttle body from theflow meter.3. Undo bolts (3a), remove half-rings (3b) and air flow meter (3c).2013556

1056B10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in thestop position, then disconnect the battery negative terminal.1. Disconnect the electrical connection from the air flow meter.Move the relays fastened to the batterycradle to one side.2. Disconnect the pipe carrying air to the throttle body from theflow meter.3. Undo bolts (3a), remove half-rings (3b) and air flow meter (3c).2013557

1056B17


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in stopposition, then disconnect the battery negative terminal.1. Disconnect the oil vapour recirculation pipe from the right cylinderhead.2. Disconnect the corrugated hose from the throttle body and moveaside.2013558

1056B50


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in stopposition, then disconnect the battery negative terminal.3237529-1048A34sleeve(s) from flow meter to air supply capacitycase - r + r . 3238429-5530B10battery - r+r . 1. Disconnect the electrical connection from the engine coolanttemperature sensor.2. Undo and remove the engine coolant temperature sensor.2013560

1056B51


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213237529-1048A34sleeve(s) from flow meter to air supply capacitycase - r + r3238429-5530B10battery - r+r1. Disconnect the electrical connection for the cam angle sensor.2. Undo bolt (2a) and remove cam angle sensor (2b) from the righthand cylinder head.2013561

1056B62


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21- 1072B42 left hand or right hand inlet manifold (one) - r+r 767Before any interventions on componentsof the fuel system, discharge the pressure in the system using toolN. 1.870.684.000 connected to the specific valve located on thefuel distribution manifold.1. Disconnect the fuel inlet hose, then plug to prevent fuel escaping.2. Disconnect the electrical connections from the injectors.3. Undo the bolts (3a) and remove the complete fuel pipe (3b) completewith fuel injectors (3c).2013562

1056B66



1056B67



1056B68


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the retainers (1a) and remove the fuel injectors (1b)from the fuel manifold pipe.2. Remove the O-rings from the fuel injectors.2013564

1056B70



1056B81


769

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. Working from the passenger compartment, undo bolts (1a) and removeinjection/ignition control unit guard (1b).2. Disconnect the electrical connections from the fuel injection/ignitioncontrol unit.767Follow the disconnection order:D - E - F - C - B - A.3. Undo nuts (3a) and remove injection/ignition control unit (3b).2013565

1056B90


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative (-) terminal.Raise the car.1. Disconnect the electrical connection for the air conditionercompressor electromagnet.2013568

1056B14


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213237529-1048A34sleeve(s) from flow meter to air supply capacitycase - r + r1. Disconnect the constant idle actuator electrical connection.2. Disconnect both coolant inlet and outlet pipes (2a-2b) from thethrottle body.3. Disconnect the throttle position switch (potentiometer) electricalconnection.4. Disconnect the accelerator cable.Release the pipes from the fasteners onthe bracket under the throttle body.5. Undo the four bolts (5a) and remove throttle body (5b) with itsgasket.2014090

1056B15


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in stopposition, then disconnect the battery negative terminal.3237652-1016A40ignition coil cover on cylinder head- r+r3237529-1048A34sleeve(s) from flow meter to air supply capacitycase - r + rDisconnect the electrical connection fromthe throttle body integral with the M.D.S.1. Disconnect electrical connections (1a) and (1b) from the injection/ignitioncontrol unit and earth lead (1c) from the throttle body integralwith the M.D.S.2. Disconnect the accelerator cable from the throttle body integralwith the M.D.S.3. Disconnect the injection/ignition wiring from the mounting bracket.4. Undo bolts (4a) and remove the throttle body integral with theM.D.S. (4b) complete with the injection/ignition control unit (4c).2014091

1056B19


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the battery negative terminal.3237544-1056B82injection/ignition system e.c.u. (one) - r + r . 1. Disconnect the earth lead from the injection control unit support.2. Disconnect the oil vapour recovery pipe from the corrugated hose.3. Loosen the bands and remove the second section of the corrugatedhose after having released it from the bracket.4. Disconnect the electrical connection (4a) from the butterflycasing integrated with D.V.L. and release the wiring from the band(4b).2014095

1056B40


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative terminal.1. Disconnect the electrical connection from the intake air temperaturesensor.2. Loosen collar (2a), withdraw air sleeve (2b) from the throttlebody and move to one side.3. Unscrew both power steering fluid reservoir bolts and move toone side.2014098

1056B43


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative terminal.1. Disconnect the constant idle actuator electrical connection.2. Unscrew both retaining bolts and remove the throttle body actuator.Recover the seal.2014100

1056B46


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative terminal.1. Disconnect the electrical connection from the intake air temperaturesensor.2. Withdraw and remove the intake air temperature sensor from theair sleeve.2014101

1056B48


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative terminal.

1056B60


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative (-) terminal.

1056B87


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in thestop OFF, then disconnect the battery negative terminal.1. Disconnect electrical connections (1a) and (1b) from the injection-ignitioncontrol unit.2. Release the electrical wiring from the fastening on the ignition/injectionsystem control unit mount.2014110

1056B89


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the battery negative terminal.3237544-1056B82injection/ignition system e.c.u. (one) - r + r . 1. Disconnect the earth lead from the injection control unit support.2. Disconnect the oil vapour recovery pipe from the corrugated hose.3. Loosen the bands and remove the second section of the corrugatedhose after having released it from the bracket.4. Disconnect the electrical connection (4a) from the butterflycasing integrated with D.V.L. and release the wiring from the band(4b).2014117

pressure pump electric control



1060G10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213237784-1048A50air inlet pipe to turbo charger - r + r Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 32384295530B10battery - r+r ). 1. Undo the bolts (1a) and move the relay holder backet (1b) awayfrom the battery drip tray.2. Disconnect the flow meter electrical connection.3. Undo the nuts (3a) and remove retaining plates (3b).4. Remove flow meter (4a) together with the sleeve from the flowmeter to turbocharger air intake pipe (4b) and the sleeve from thefilter to flow meter (4c).2015135

1060G14


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238429-5530B10battery - r+r1. Disconnect the electrical connection from the engine coolanttemperature sensor.2. Undo and remove the engine coolant temperature sensor.2015136

1060G16


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative (-) terminal. 1. Disconnect the electrical connection from the excess pressuresensor.2. Undo the bolt (2a), remove the excess pressure sensor (2b).2015137

1060G18


<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. 32384295530B10battery - r+r ). 1. Disconnect the electrical connection from the fuel temperaturesensor.2. Undo and remove the fuel temperature sensor from the fuel returnmanifold pipe.2015138

1060G20


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the lift.Raise the car. Make sure that the ignition is off (STOPposition), then disconnect the negative battery terminal (referto op. 32384295530B10battery - r+r ). 1. Disconnect the condensed oil return pipe from the sump.Disconnect the electrical connection forthe engine rpm and timing sensor.2. Undo the bolts (2a) and remove the rpm and timing sensor (2b).2015139

1060G22



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 (-). Proceed with removal 3237758-1016A10sound-proofing cover- r + r1. Disconnect the electrical connection from the fuel pressure sensoron the fuel manifold.2. Undo and remove the fuel pressure sensor on the fuel manifold.2068748

1060G30


<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 3237758-1016A10sound-proofing cover- r + r Proceed with removal 3238966-7055B54under-engine guard -r r Proceed with removal 3237725-1044B10fuel filter assembly -r + r or replace1. Undo and remove the fuel filter water presence sensor.2068749

1060G38


<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. 32384295530B10battery - r+r ). Disconnect the electrical connection fromthe switch on the brake pedal.Rotate and remove the switch on the brakepedal.

1060G42


<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. 32384295530B10battery - r+r ). Disconnect the electrical connection fromthe switch on the clutch pedal.Rotate and remove the switch on the clutchpedal.

1060G50


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with the removal 3237758-1016A10sound-proofing cover- r + r . 1. Loosen band (1a) and disconnect the air delivery sleeve fromheat exchanger to intake manifold (1b), throttle body connectorside. 2015145

1060G52


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with removal 3237758-1016A10sound-proofing cover- r + r . Proceed with removal 3237818-1060G50Electro-pneumaticallycontrolled THROTTLE CASING - R.R. .

1060G58


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with the removal 3237758-1016A10sound-proofing cover- r + r . 1. Loosen band (1a) and disconnect the air delivery sleeve fromheat exchanger to intake manifold (1b), throttle body connectorside.2015155

1060G70


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in thestop OFF, then disconnect the battery negative terminal. Proceed with the removal 3237758-1016A10sound-proofing cover- r + r . 1. Loosen band (1a) and disconnect the air delivery sleeve fromheat exchanger to intake manifold (1b), throttle body connectorside.2015161

1060G72


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in thestop OFF, then disconnect the battery negative terminal. Proceed with the removal 3237758-1016A10sound-proofing cover- r + r . 1. Loosen band (1a) and disconnect the air delivery sleeve fromheat exchanger to intake manifold (1b), throttle body connectorside.2015169

1060G80


<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. 32384295530B10battery - r+r ). Working from the passenger compartmentin the front passenger-side wheel arch compartment, unscrew the boltand nut then remove the control unit protection.Disconnect the electrical connections afterturning the safety levers.Unscrew the nuts and remove the dieselelectronic injection system.

1060G88


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Ensure that the ignition key is in theOFF position, then disconnect the battery negative terminal.1. Undo the nut (1a) and remove the protective cover (1b).2. Remove the diesel injection system relays.2015179

1060G90


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the ramp. Proceed with removal 3237758-1016A10sound-proofing cover- r + r . Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 3238966-7055B54under-engine guard -r r . Proceed with removal 3237866-1076B70exhaust pipe betweenpre-catalytic converter and catalytic converter - r r . 1. Disconnect the electrical connection from the engine oil pressurewarning light switch.2. Disconnect the electrical connection for the engine oil levelsensor.3. Disconnect the electrical connection for the rpm sensor.2069114