AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v da 04/98 a 02/99 – BRAKE LIGHTS – – Station Wagon – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  da 04/98 a 02/99 – BRAKE LIGHTS –  – Station Wagon – 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-
B11Controls lighting fuse-
B98Supplementary fuse box5505A
B99Maxifuse box on battery-
B99Maxifuse box on battery5530B
C30Left rear earth5505A
C31Rear right earth5505A
D1Front / dashboard connection-
D1Front / dashboard coupling-
D5Front / ABS couping-
D6Front / rear connection-
D6Front / rear coupling-
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D87Left tailgate / rear coupling-
D87Left tailgate rear coupling/-
E15Rev counter5560B
F10Left headlamp5540B
F30Rear left light cluster5540A
F30Rear lights cluster left (fixed part)5540A
F31Rear right light cluster5540A
F31Rear right lights cluster (fixedpart)5540A
F40Additional ("third brake light")5550D
F40Additional tail-light ('third brakelight')5550D
H1Ignition switch5520A
I30Brake pedal switch5550D
Location of components

Components
Component codeNameAssembly reference
B1Junction unit5505A
B5MAXI FUSE box-1-
B5MAXI FUSE-1 box-
B5MAXIFUSE box-1-
B11Controls lighting fuse-
B98Supplementary fuse box5505A
B99Maxifuse box on battery-
B99Maxifuse box on battery5530B
C30Left rear earth5505A
C31Rear right earth5505A
D1Front / dashboard connection-
D1Front / dashboard coupling-
D5Front / ABS couping-
D6Front / rear connection-
D6Front / rear coupling-
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D87Left tailgate / rear coupling-
D87Left tailgate rear coupling/-
E15Rev counter5560B
F10Left headlamp5540B
F30Rear left light cluster5540A
F30Rear lights cluster left (fixed part)5540A
F31Rear right light cluster5540A
F31Rear right lights cluster (fixedpart)5540A
F40Additional ("third brake light")5550D
F40Additional tail-light ('third brakelight')5550D
H1Ignition switch5520A
I30Brake pedal switch5550D
DescriptionThe brake lights are located at the rearin the side lights and in the central third brake light and consistof 10 separate bulbs located in the rear spoiler.These are operated whenever the brake pedalis pressed, by means of a switch on the pedal itself.The correct operation of the side brakelights is controlled by the check device for the exterior lights,located inside the rev counter module.The following faults may occur:blown bulbbulb s.c. to earth or positiveincorrect bulb (5W bulb instead of 21W)A special failure warning light, also inthe rev counter module, comes on for all other faults in the variouscircuits. This warning light comes on for about 4 seconds when theignition key is turned to MAR, to indicate it is working properly,then it goes off.The third centre brake light is not controlledby the check panel.The circuit is protected by the two fusesfor the lights controlled by the check panel, one for the lightson the right hand side, the other for those on the left hand sideand by a fuse on the supply line for all three brake lights.A braking signal is also sent from the switchto the ABS, which detects braking status and therefore introducesbraking control. The same signal is also sent to some engine managementsystems, which take the braking condition into account when determiningthe engine control mode.
Functional description The switch I30 is controlled by theignition (INT)from the line for fuse F1 for the controlunit B1 : when the brake pedal is pressed, the switch closesand sends the operating signal to the check device inside the revcounter E15 (pin 5 of connector A). The supply for the check device inside E15 arrivesdirectly from the battery (maxifuse J/B2 of B99 ) atpins 10 and 16 of connector A, through fuses F2 and F3 ofthe junction unit B1 ; the former protects the circuits forthe lights on the left hand side, the latter those on the right. The check device thereby controls the supply(pin 18 and pin 13 of connector A) for the side brake lights inthe rear light clusters F30 and F31 . In the case of failures in the circuit,the "lights failure" warning light - inside E15 -comes on, with the supply controlled by the ignition (IINT), pin15 of connector A, of the line protected by fuse F4 of theadditional fuse box B98 . The switch I30 sends the signal foroperating the centre rear light cluster F40 via the junctionunit B1 (pin 18, connector D and pin 14 of connector E). The braking signal for the switch I30 issent from the switch to the ABS ( 3234769SeeE7020ABS ) and - on someversions - to the engine management control unit as well ( 3234515SeeE5030PETROL ENGINE ELECTRONIC MANAGEMENT or 3234559SeeE5050DIESEL ENGINES ELECTRONIC MANAGEMENT ).

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



Controls lighting fuse



B11



B11



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

Left rear earth



C30



C30



C30



C30



Rear right earth



C31



C31



C31



C31



C31



C31



C31



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



Front / ABS couping



D5A



D5A



D5A



D5A



D5A



D5B



D5B



D5B



D5B



D5B



D5B



D5B



D5B



D5B



D5B



D5B



D5B



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



D5



Front / rear connection



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6A



D6B



D6B



D6B



D6B



Left tailgate / rear coupling



D87



D87



D87



Rev counter



E15A



E15A



E15A



E15A



E15A



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



E15B



analogue control panel



5560b02


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Unscrew the screw.2. Remove the frame (2a) and take it off the check clamps (2b).3. Unscrew the screws.4. Remove the speedometer/odometer (4a) from from support and moveit.5. Disconnect the electric connections (5a, 5b).2018847

5560B03


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Unscrew the screw.2. Remove the frame (2a) and take it off the check clamps (2b).3. Unscrew the screws.4. Extract the speedometer (4a) from the support (4b) e move it.5. Disconnect the electric connections (5a, 5b).2018848

5560B06


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21For the replacement of lampsof the speedometer/odometer proceed as follows.3238496-5560B02kilometre/mileometer - r r1. Turn and remove the lamp holder of the instrument lamp (1a) orthe lamp holder of the display lamp (1b).2. Remove the lamp from lamp holder. Pressure joint.2018849

5560B12



Left headlamp



F10A



F10A



F10A



F10A



F10A



F10A



F10B



F10B



F10B



F10B



headlamps



5540B16


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238952-7055A43central front grille - r r3238951-7055A41RIGHT FRONT GRILLE - R.R. (leftand right) It is advisable to place the vehicle on a lift.1. Undo the bolts fixing the end of the front bumper.2. Release the wheel arch liner from the front bumper using thespecial tool in the area where the bolts were removed. 3. Working from the bottom, undo the two bolts securing the bumperto the wing.2018790

5540B22


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238721-7025A12Engine front sound insulation COVER - R.R.3238722-7025A14Bonnet LID - R.R.

5540B26


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238721-7025A12Engine front sound insulation COVER - R.R.3238722-7025A14Bonnet LID - R.R.

5540B28



5540B38



5540B42



5540B43


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Undo the bolts.2. Remove control unit (2a) by disconnecting from electrical connection(2b).2018803

5540B44


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238721-7025A12Engine front sound insulation COVER - R.R.3238722-7025A14Bonnet LID - R.R.

5540B46


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238721-7025A12Engine front sound insulation COVER - R.R.3238722-7025A14Bonnet LID - R.R.

5540B47


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.

5540B48


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.1. Rotate the cover in an anti-clockwise direction and extract it.2. Extract the bulb holder and bulb (press fit).3. Extract the bulb from the bulb holder.2018810

5540B70


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238964-7055B42Additional FRONT WHEEL ARCH (one), left or right- R.R. (left and right) 3238951-7055A41RIGHT FRONT GRILLE - R.R. (leftand right) 3239044-7210E10R.R. FRONT BUMPER1. Unscrew the nuts.2. Move the light cluster (2a) releasing the pin and retainer fromits housing (2b).3. Disconnect the electrical connections (3a, 3b, 3c).4. Recover the light cluster.2070082

5540B71


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238964-7055B42Additional FRONT WHEEL ARCH (one), left or right- R.R. (left and right) 3238951-7055A41RIGHT FRONT GRILLE - R.R. (leftand right) 3239044-7210E10R.R. FRONT BUMPER1. Unscrew the nuts.2. Move the light cluster (2a) releasing the pin and retainer fromits housing (2b).3. Disconnect the electrical connections (3a, 3b, 3c).4. Recover the light cluster.2070083

5540B83


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213238952-7055A43central front grille- r r . 3238951-7055A41RIGHT FRONT GRILLE - R.R. (right andleft). 767It is advisable to place the vehicleon a lift.1. Undo the bolts fixing the ends of the front bumper.2. Release the wheel arch liner from the front bumper, using thespecial tool, in the area where the bolts were removed. 3. Working from the bottom, undo the two bolts securing the bumperto the wing.2018811

Rear left light cluster



F30



F30



F30



F30



lighting



5540A52



5540A56


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the boot lid and undothe two side bolts fixing the inner trim.2018778

5540A68


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Open the boot lid and undo the bolts fixing the inner lining.2018781

5540A78


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Open the boot lid and undo the bolts fixing the inner lining.2018784

5540A80


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Open the trunk lid panel and unscrew the two clamping screwsof the light fender.2. Unloose the check tongs (2a) and extract the light holder (2b).3. Take the lights off from the light holder.(Bayonet joint)2018787

5540A94


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Operating from the right side, by a screwdriver, and take thelight off.2. Disconnect the electrical connection.2018788

Rear right light cluster



F31



F31



F31



F31



Additional ("third brake light")



F40



F40



F40



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



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