AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v fino a 03/98 – REVERSING LIGHTS – – Station Wagon – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  fino a 03/98 – REVERSING LIGHTS –  – Station Wagon – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
B1Junction unit5505A
C30Left rear earth5505A
C31Rear right earth5505A
D3Front / battery connection-
D3Front / battery coupling-
D5Front / ABS couping-
D5Front / ABS coupling-
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D40Boot / rear coupling-
D40Rear / boot connection-
D87Left tailgate / rear coupling-
D87Left tailgate rear coupling/-
D88Right /tailgate rear coupling-
D88Right tailgate rear coupling/-
F35Left rear. light cluster on (movingsection of boot)5540A
F35Rear left lights cluster (movingpart on boot lid)5540A
F36Rear lights cluster right (movingpart on boot lid)5540A
F36Right. rear( light cluster on movingpart of boot lid)5540A
H1Ignition switch5520A
I20Reversing lights switch5550D
L50Automatic transmission solenoid unit2127C
Location of components

Components
Component codeNameAssembly reference
B1Junction unit5505A
C30Left rear earth5505A
C31Rear right earth5505A
D3Front / battery connection-
D3Front / battery coupling-
D5Front / ABS couping-
D5Front / ABS coupling-
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D40Boot / rear coupling-
D40Rear / boot connection-
D87Left tailgate / rear coupling-
D87Left tailgate rear coupling/-
D88Right /tailgate rear coupling-
D88Right tailgate rear coupling/-
F35Left rear. light cluster on (movingsection of boot)5540A
F35Rear left lights cluster (movingpart on boot lid)5540A
F36Rear lights cluster right (movingpart on boot lid)5540A
F36Right. rear( light cluster on movingpart of boot lid)5540A
H1Ignition switch5520A
I20Reversing lights switch5550D
L50Automatic transmission solenoid unit2127C
DescriptionThe car is equipped with two reversing lightssituated iin the centre of the tail-light unit (on the tail-gate).These are operated whenever reverse is engagedvia a switch on the outside of the gear housing.The reversing light circuit is suppliedwith the ignition key turned to MAR - fully independently of theother lights - by a line protected by a fuse in the junction unit.
Functional description The switch for the reversing lights I20 issupplied when the ignition is switched on (INT) by the line forfuse F1 for the junction unit B1 . When reverse gear is engaged, the switchcloses and sends the supply to the reversing lights in the centrerear light cluster on the left F35 and on the right F36 ,via the junction unit B1 (pin 9 connector D and pins 6 and7 of connector G).

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



Left rear earth



C30



C30



C30



C30



Rear right earth



C31



C31



C31



C31



C31



C31



C31



Front / battery connection



D3



D3



D3



D3



D3



D3



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



Boot / rear coupling



D40



D40



D40



Left tailgate / rear coupling



D87



D87



D87



Right /tailgate rear coupling



D88



D88



D88



Left rear. light cluster on (moving section of boot)



F35



F35



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 lights cluster right (moving part on boot lid)



F36



F36



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

Reversing lights switch



I20



I20



I20



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



Automatic transmission solenoid unit



L50A



L50A



L50A



L50A



L50B



L50B



hydraulic gear selection system



2127C04


Position the vehicle on a flat surface.Check fluid level and top up if necessary.Work with the engine cold.Turn the ignition key to the ON position.Wait for the pump to come on and go off.Immediately after it has gone off, check the level of hydraulicfluid in the hydraulic selection gearbox using the special dipstickin the reservoir cover.If necessary, top up the level using therecommended fluid.Turn the ignition to the OFF position.

2127C06


3238429Refer to op..5530B10battery - r+r . 3238435Refer to op..5530B52Battery DRIP TRAY/SUPPORT- R.R. . Supply the vehicle using an auxiliary battery.1. Loosen the bleed screw on the electro-hydraulic selection hydrauilcunit.Operate the electric pump for 20 secondsuntil the air is completely expelled.Tighten the bleed screw to the recommendedtorque.2017131

2127C10


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213237946-2127C12hydraulic gear selection fluid reservoir - r r . 1. Release the electrical connection for the electro-hydraulic selectionsystem electric pump from the support.2. Release the pipe between the electro-hydraulic selection hydraulicunit and the fluid reservoir from the band on the support.3. Release the pipe between the electric pump and the electro-hydraulicselection hydraulic unit from the band on the support.2017134

2127C12


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the electro-hydraulic selection gearbox hydraulic circuitfluid reservoir cap.Drain the electro-hydraulic selection gearbox hydrauliccircuit fluid reservoir.2. Loosen the band fixing the electro-hydraulic selection gearboxhydraulic circuit fluid reservoir.3. Disconnect the supply and return pipes from the electro-hydraulicselection gearbox hydraulic circuit fluid reservoir.4. Remove the electro-hydraulic selection gearbox hydraulic circuitfluid reservoir.2017146

2127C18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the electro-hydraulic gear selection system hydrauliccircuit fluid reservoir cap.Drain the electro-hydraulic gear selectionsystem hydraulic circuit fluid reservoir.2. Release the electrical connection for the electro-hydraulic gearselection system electric pump from the support.3. Loosen the fixing bands and remove the pipe between the hydrauliccircuit fluid reservoir and the electro-hydraulic gear selectionelectric pump.2017149

2127C20


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Keep the brake pedal depressed.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner.3238429-5530B10battery - r+r3238435-5530B52Battery DRIP TRAY/SUPPORT - R.R.1. Remove the electro-hydraulic gear selection system hydrauliccircuit fluid reservoir cap.Drain the electro-hydraulic gear selectionsystem hydraulic circuit fluid reservoir.2. Release the electrical connection for the electro-hydraulic gearselection system electric pump from the support.2017154

2127C22


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Keep the brake pedal depressed.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner.1. Remove the electro-hydraulic selection gearbox hydraulic circuitfluid reservoir cap.Drain the electro-hydraulic selection gearbox hydrauliccircuit fluid reservoir.2. Release the electrical connection for the electro-hydraulic gearselection system electric pump from the support.2017164

2127C30


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner.Ensure that the ignition key is in OFFposition, then disconnect the negative battery terminal.3237946-2127C12hydraulic gear selection fluid reservoir - r r . 1. Release the electrical connection for the electro-hydraulic gearselection system electric pump from the support and disconnect it.2. Release the pipe between the electro-hydraulic selection hydraulicunit and the fluid reservoir from the band on the support.3. Release the pipe between the electric pump and the electro-hydraulicselection hydraulic unit from the band on the support.2017170

2127C40


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the gear lever in neutral.Connect the Examiner diagnostic equipment.Keep the brake pedal depressed.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Remove the electro-hydraulic gear selectionsystem hydraulic circuit fluid reservoir cap and drain the reservoirusing a syringe.767Do not reuse the fluid from thehydraulic gear selector system circuit.1. Disconnect the pipe between the electro-hydraulic gear selectionhydraulic unit and the fluid reservoir, hydraulic unit side.2. Undo the connector (2a) and disconnect the pipe between the electricpump and the electro-hydraulic gear selection hydraulic unit (2b),hydraulic unit side. 767The fluid recovered should notbe reused.2017183

2127C25


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Keep the brake pedal depressed.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . Proceed with removal 3238966-7055B54under-engine guard -r r . 1. Undo the connector and disconnect the pipe between the selectionsolenoid valve and the engagement/selection actuator, hydraulicactuator unit side.2069788

2127C26


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Keep the brake pedal depressed.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . Proceed with removal 3238966-7055B54under-engine guard -r r . 1. Undo the connector and disconnect the pipe between the unevengear engagement solenoid valve and the engagement/selection actuator,hydraulic actuator unit side. 2069792

2127C27


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Keep the brake pedal depressed.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . Proceed with removal 3238966-7055B54under-engine guard -r r . 1. Undo the connector and disconnect the pipe between the even gearengagement solenoid valve and the engagement/selection actuator,hydraulic actuator unit side.2069796

2127C28


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . 1. Undo the connector and disconnect the pipe between the clutchengagement solenoid valve and the clutch hydraulic actuator, hydraulicactuator unit side.2069800

2127C44


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the rampConnect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . 1. Undo the upper bolt fixing the pressure accumulator collar tothe gearbox.2069818

2127C45


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . Proceed with removal 3237958-2127E44hydraulic selection gearboxclutch position sensor - r r . Proceed with removal 3237974-2127C28PIPE FROM CLUTCH ENGAGEMENTSOLENOID VALVE TO CLUTCH HYDRAULIC ACTUATOR - R.R.1. Release the pipes from the retaining bands on the clutch actuatorcylinder.2. Undo the bolts (2a) and remove the clutch actuator cylinder (2b).2069821

2127C48


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the gear lever in neutral, N.Connect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . 1. Disconnect the electrical connection from the electro-hydraulicgear selection position sensor.2. Disconnect the electrical connection from the electro-hydraulicgear selection position sensor.3. Undo the connector and disconnect the pipe between the selectionsolenoid valve and the engagement/selection actuator, gear engagementelectro-hydraulic selection device side. 4. Undo the connector and disconnect the pipe between the even gearengagement solenoid valve and the engagement/selection actuator,gear engagement electro-hydraulic selection device side. 5. Undo the connector and disconnect the pipe between the unevengear engagement solenoid valve and the engagement/selection actuator,gear engagement electro-hydraulic selection device side. 2069823

2127C52


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21 Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . Proceed with removal 3237980-2127C56CLUTCH SOLENOID VALVE- R.R. . 1. Disconnect electrical connections (1a) and (1b) from the evenand odd gear engagement solenoids.2. Undo the bolts (2a) and remove the even and odd gear engagementsolenoid valves (2b).2069828

2127C54


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Position the vehicle on the rampConnect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner.Ensure that the ignition key is in theOFF position, then disconnect the negative battery terminal (-). Proceed with removal 3238966-7055B54under-engine guard -r r . 1. Disconnect the electrical connection of the gear selection solenoid.2. Undo the bolts (2a) and gear selection solenoid valve (2b).2069829

2127C56


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Connect the Examiner diagnostic equipment.Select 'Alf 156 Selespeed' on the Examiner.Select 'Control Unit Test' on the Examinerand select the 'Marelli Selespeed Automatic Transmission'.Press 'Active Diagnosis' on the Examinerand select 'Accumulator depressurizing'.Continue with the procedure on the Examiner. Proceed with removal 3238429-5530B10battery - r+r . Proceed with removal 3238435-5530B52Battery DRIP TRAY/SUPPORT- R.R. . Proceed with removal 3237525-1048A10air cleaner filtering element- replace . 1. Disconnect the electrical connection from the clutch controlsolenoid.2. Undo the bolts (2a) and remove the clutch control solenoid valve (2b).2069830