AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v da 04/98 a 02/99 – INSTRUMENT LIGHTING – – 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 – INSTRUMENT LIGHTING –  – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
B11Controls lighting fuse-
B98Supplementary fuse box5505A
C10Front left earth5505A
D1Front / dashboard connection-
D1Front / dashboard coupling-
E10Speedometer5560B
E15Rev counter5560B
E20Auxiliary instrument5560C
H1Ignition switch5520A
H5Steering column switch unit5550A
H10Controls for headlamp alignment,instrument lighting adjustment5540C
H10Switch headlamp adjuster instrumentlightzero milometer5540C
Location of components

Components
Component codeNameAssembly reference
B11Controls lighting fuse-
B98Supplementary fuse box5505A
C10Front left earth5505A
D1Front / dashboard connection-
D1Front / dashboard coupling-
E10Speedometer5560B
E15Rev counter5560B
E20Auxiliary instrument5560C
H1Ignition switch5520A
H5Steering column switch unit5550A
H10Controls for headlamp alignment,instrument lighting adjustment5540C
H10Switch headlamp adjuster instrumentlightzero milometer5540C
DescriptionAll the instruments (dials and gauges) are lit up with the ignitionswitched ON.In the "night" position (sidelights on), the brightness can be adjusted to three levels by anexternal button.On the sport version with white dials, theseare not illuminated when the ignition is switched on, only whenthe side lights are switched on.This lighting logic is managed by a speedometermodule which controls lighting of the rev counter module and thecentral instrument.The check control instrument is lit up directlyby the electronic device inside.The adjustment button is on the left ofthe actual instruments, together with the button for zeroing themilometer and the headlamp alignment adjuster.The lighting circuit for all the instrumentsis protected by a special fuse, located at the side of the junctionunit.
Functional description The supply for the speedometer E10 (pin 10 of connectorA) is controlled by the ignition (INT) by the line for fuse B11 upto 2/99 or fuse F4 of the additional fuse box B98B from2/99. Similarly, the rev counter E15 (atpin 15 of connector A) and the centre instrument E20 (pin1.). An earth signal from instrument light dimmercontrol H10 reaches pin 6 of connector B of E10 . Thisalso receives a side light activated signal, at pin 5 of connectorB ( 3233770SeeE2010SIDE LIGHTS / NO. PLATE LIGHTS ). According to the logic processed by theinternal electronic device, the speedometer E10 sends thelighting signal to the other instruments: to the centre instrument E20 (pin7) from pin 12 of connector A; and to the rev counter E15 (3of connector B) from pin 4 of connector B. Switch H10 symbols are lit up whenthe side lights are switched on through the line coming from theswitch for the steering column switch unit H5 .

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



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



Front left earth



C10A



C10A



C10A



C10A



C10A



C10A



C10A



C10A



C10A



C10B



C10B



C10B



C10B



C10C



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



Power supply and earths



E1010



E1020



E1020



E1020



E1010



E1010



E1010



E1010



E1010



E1010



E1010



E1010



E1010



E1010



E1010



E1010



E1010



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



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



Interior lighting



E2010



E2010



E2010



E2011



E2011



E2011



E2012



E2012



E2012



E2020



E2020



E2020



E2020



E2020



E2021



E2021



E2021



E2021



E2021



E2021



E2021



E2021



E2021



E2021



E2022



E2022



E2022



E2022



E2022



E2022



E2030



E2030



E2031



E2031



E2031



E2031



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

Steering column switch unit



H5A



H5A



H5A



H5B



H5B



H5B



H5B



H5C



H5C



H5D



H5D



H5D



H5E



stalk unit



5550A12


<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+r3238525-5580C12clock spring for air bag module on steering wheelr rClosely follow the safety regulations established for this operation.1. Loosen the band fixing the steering column switch unit.2. Move the steering column switch unit.3. Disconnect the electrical connections (3a, 3b, 3c).2018830

Controls for headlamp alignment, instrument lighting adjustment



H10



H10



headlamp/light cluster alignment correction devices



5540C18


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the switch using the special tool (work on the side shown).2. Disconnect the electrical connections.2018814

5540C24


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

5540C42


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the vehicle on a liftand raise.1. Working under the left front suspension, undo the nut fixingthe connecting rod.2. Disconnect the link from the sensor lever.3. Undo the bolt fixing the mounting.4. Move aside the sensor with mounting.5. Disconnect the electrical connection and keep the sensor andsupport.2018817

5540C44


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the vehicle on a liftand raise.1. Working under the left front suspension, undo the nuts fixingthe connecting rod.2. Remove the link.2018819

5540C46


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the vehicle on a liftand raise.1. Working under the left rear suspension, undo the nut fixing theconnecting rod.2. Disconnect the link from the sensor lever.3. Undo the bolts fixing the sensor.4. Move the sensor (4a) and disconnect the electrical connection(4b), then keep the sensor.2018820

5540C48


<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the vehicle on a liftand raise.1. Working under the left rear suspension, undo the nuts fixingthe connecting rod.2. Remove the link.2018821