AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v fino a 03/98 — ELECTRIC FRONT WINDOWS — — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  fino a 03/98 — ELECTRIC FRONT WINDOWS —  — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION — WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
B1Junction unit5505A
B5MAXI FUSE box-1-
B5MAXI FUSE-1 box-
B5MAXIFUSE box-1-
B10Fuse controlled by ignition (INT/A)-
B10Key-dependent supply fuse (INT/A)-
B98Supplementary fuse box5505A
B99Maxifuse box on battery-
B99Maxifuse box on battery5530B
C20Passenger side dashboard earth5505A
C31Rear right earth5505A
D6Front / rear connection-
D6Front / rear coupling-
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D30Rear / front door connection left-
D30Rear / front door coupling left-
D31Coupling for rear/right front door-
D31Rear coupling / front right. door-
D31Right front door rear coupling/.-
H1Ignition switch5520A
H40Front electric window switch. driver'sside on door7005M
H40Switch for front electric windowon driver's door7005M
H41Front. passenger electric windowswitch in7005M
H41Switch for passenger's electric windowon driver's door7005M
H50Electric window switch on .frontpassenger door7005M
H50Electric window switch on passengerdoor7005M
M40Integrated services control unit5505A
N60Front left electric window motor7005M
N61Front right electric window motor7005M
Location of components

Components
Component codeNameAssembly reference
B1Junction unit5505A
B5MAXI FUSE box-1-
B5MAXI FUSE-1 box-
B5MAXIFUSE box-1-
B10Fuse controlled by ignition (INT/A)-
B10Key-dependent supply fuse (INT/A)-
B98Supplementary fuse box5505A
B99Maxifuse box on battery-
B99Maxifuse box on battery5530B
C20Passenger side dashboard earth5505A
C31Rear right earth5505A
D6Front / rear connection-
D6Front / rear coupling-
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D30Rear / front door connection left-
D30Rear / front door coupling left-
D31Coupling for rear/right front door-
D31Rear coupling / front right. door-
D31Right front door rear coupling/.-
H1Ignition switch5520A
H40Front electric window switch. driver'sside on door7005M
H40Switch for front electric windowon driver's door7005M
H41Front. passenger electric windowswitch in7005M
H41Switch for passenger's electric windowon driver's door7005M
H50Electric window switch on .frontpassenger door7005M
H50Electric window switch on passengerdoor7005M
M40Integrated services control unit5505A
N60Front left electric window motor7005M
N61Front right electric window motor7005M
DescriptionThe electric front windows are operatedautomatically, depending on how the switch is pressed:for the driver's window:the operation is manual (the glass goes up/down only whenthe button is pressed) when the button is held down for 60 to 300milliseconds;the operation is instead automatic (the glass continuesto go up/down to the end of travel, even if the button is released)when the button is held down for over 300 milliseconds;if the button is pressed again during movement of theglass, the glass is stopped instantly;if the button is pressed for less than 60 milliseconds,it is ignored (it is considered to have been knocked accidentally). for the passenger's window:closing is only manual;opening is the same as for the driver's window (automatic).Both windows can only be operated when theignition is on.This operating logic is controlled by theintegrated services control unit, on the right hand side, underthe dashboard.The control unit also carries outa series of safety checks:the stopping of the electric windows (switching off theelectric supply to the motor) is determined when the glass reachesthe end of travel at top or bottom, or if an obstacle blocks theglass. This is regulated by checking the motor current.if there are faults on the electrical circuits, the controlunit switches the system off temporarily (for example if the motorcontrol signals are interrupted or if the absorbed current is belowthe usual values);if there is a fault in the control buttons (short circuit,or buttons jammed in the pressed position), the control unit switchesthe system off temporarilyThe control circuit for the front electricwindows is protected by a specific fuse, in the junction unit. Theoperating buttons are also protected by the fuse which protectsthe other supplied controlled by the ignition.The control switch symbols are lit whenthe key is turned to MAR.
Functional description The integrated services control unit M40 manages the operationof the electric front windows. The direct supply from the battery for controlunit M40 specific to the electric windows (pin 15 and 16of connector A) arrives from the line protected by maxifuse J/B1 (of B5 up to 2/99 or B99 from 2/99) and fuse F12 ofjunction unit B1 , while the supply controlled by the ignitionreaches pin 7 of connector B from the line for fuse F1 ; pins 4 and 20 of connector A provide the reference earth for thepassenger and driver's electric windows, respectively. The switches H40 (driver's electricwindow), H41 (passenger electric window on driver's door)and H50 (passenger electric windoe on passenger front door) receivea supply controlled by the ignition (INT/A) from the line from fuse B10 upto 2/99 or from fuse F6 of the additional fuse box B98B from2/99, and are earthed C20 : in this way they are also litup when the ignition is switched on. When the switches are operated, theysend control signals (positive and negative) to control unit M40:at pins 10 and 11 of connector A from switch H40 ;at pins 5 and 18 of connector A from switch H41 ;at pins 2 and 6 of connector A from switch H50 ;The control unit M40 operates theelectric windows on the basis of the logic described previously:from pins 8 and 9 of connector A it sends commands tothe driver's electric window motor N60 from pins 1and 3 of connector A it sends commands to thepassenger electric window motor N61. When the positive and negative signals arereversed, the motor's direction of rotation is also reversed.

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



MAXI FUSE box-1



B5A



B5B



B5B



B5B



B5B



Fuse controlled by ignition (INT/A)



B10



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



Maxifuse box on battery



B99A



B99A



B99A



B99A



B99B



B99B



B99B



B99B



B99B



B99B



B99C



B99C



B99C



B99C



B99C



B99C



B99C



B99C



B99D



B99D



B99D



B99D



B99D



B99D



B99D



battery and leads



5530B10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the car on a ramp.Undo the bolt securing the bracket on thebattery mount.Release the battery from the anchoragebracket complete with strap and remove.

5530B14


769768768

5530B18


Follow these precautions.769On batteries with an opticam hydrometer,electrolyte level and battery charge status can be monitored qualitativelyby examining the indicator colour:a light, bright colour indicates low electrolytelevel: top up with distilled water;a dark colour without a green area in thecentre indicates that the electrolyte level is correct but chargeis low: recharge the battery;a dark colour with a green area in themiddle indicates that both electrolyte level and charge status arecorrect: no action is necessary. For more details 3238420See subassembly5530 CURRENT GENERATOR . 768Proceed as follows.Check the battery voltage without loadusing the test device recommended by the Service outlets (e.g. 'MICRO360').Depending on the voltage values measured,which define the state of charge of the battery, proceed as follows: If the voltage without load is less than12.10 V, replace the battery ( 32384295530B10battery - r+r ). If the voltage without load is over 12.10V but less than 12.50 V, recharge the battery ( 32384305530B14battery - recharge ). If the voltage without load is over 12.50V, the battery is efficient.If necessary, top up the electrolyte asfollows.Carefully remove the cap strip.Top up with distilled and deionized water,taking care not to allow electrolyte to splash out.768

5530B22


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the car on the liftingbridge.1. Open engine compartment cap and disconnect battery negative terminal.2. Disconnect mass terminal on side member.3. Lift the car and disconnect mass terminal on gearbox.4. Lower the car again and remove battery earth lead.2018767

5030B26



5030B40


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Disconnect the battery negative terminal.1. Open the protective cover2. Loosen the nut and disconnect the ABS supply lead3. Loosen the nut and disconnect the starter motor supply lead4. Undo the clip and undo the box retaining bolts.5. Loosen the battery positive terminal nut.2018769

5530B52


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238429-5530B10battery - r+rRelease the air duct hose from the mountingbracket on the drip tray. Remove the relay shield.1. Release the relays from the battery drip tray and remove them.2. Undo the nut fixing the air filter mounting bracket to the batterydrip tray.3. Undo the two fixing nuts (3a) and move the connections/electricalwiring mounting bracket (3b) aside.4. Release the accelerator cable from the fastening on the bracket.2018771

Passenger side dashboard earth



C20A



C20A



C20B



C20B



C20B



C20B



Rear right earth



C31



C31



C31



C31



C31



C31



C31



Front / rear connection



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6B



D6B



D6B



D6B



Front left door connection



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



D30



Coupling for rear/right front door



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



D31



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

Front electric window switch. driver's side on door



H40



H40



H40



H40



front electric windows



7005M10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238607-7005E38front side door interiorhandle-r r1. Remove the switch concerned.2018984

7005M12


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238607-7005E38front side door interiorhandle-r r1. Remove the electric window switch.2018985

7005M20


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238558-7005A04front side door waterguard protection - r r or replace with door panel removed1. Open the window (1a) about 1/3 of the way, then disconnect thewindow safety retainer (1b).2. Open the window about 2/3 of the way, then disconnect it fromthe drive pin.3. Manually raise the window to the closed position; fit a supporthook as shown in the figure to prevent accidental lowering of thewindow.4. Disconnect the electrical connection of the electric window motor.5. Undo the electric window fixing bolts.6. Remove the electric window unit from the door frame.2018986

7005M21



7005M24



7005M25



7005M40



Front. passenger electric window switch in



H41



H41



H41



H41



Integrated services control unit



M40A



M40A



M40A



M40A



M40A



M40A



M40B



M40B



M40B



M40B



M40B



M40B



M40B



M40C



M40C



M40C



M40C



Front left electric window motor



N60



N60



N60



N60



N60



N60



Front right electric window motor



N61



N61



N61



N61



N61



N61