AUTOMOTIVE ELECTRICIANS PORTAL - FZCO

Alfa Romeo 156 2.4 JTD 20v fino a 03/98 – ELECTRICALLY-ADJUSTABLE SEATS – – Regolazione lombare sedile anteriore – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Alfa Romeo 156 2.4 JTD 20v  fino a 03/98 – ELECTRICALLY-ADJUSTABLE SEATS –  – Regolazione lombare sedile anteriore – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram

Components
Component codeNameAssembly reference
B98Supplementary fuse box5505A
C20Passenger side dashboard earth5505A
C31Rear right earth5505A
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D70Left seat connection-
D71Right seat connection-
H1Ignition switch5520A
J60Optional service relay-
J60Optional services relay-
N38Driver's seat lumbar adjustment motor-
Location of components

Components
Component codeNameAssembly reference
B98Supplementary fuse box5505A
C20Passenger side dashboard earth5505A
C31Rear right earth5505A
D20/Rear dashboard coupling-
D20Dashboard/rear connection-
D70Left seat connection-
D71Right seat connection-
H1Ignition switch5520A
J60Optional service relay-
J60Optional services relay-
N38Driver's seat lumbar adjustment motor-
DescriptionOn some versions the lumbar adjustment ofthe driver's seat backrest is carried out by a special electricmotor and is controlled by a switch on the outside of the actualseat.The circuit is protected by a fuse controlledby the seat heater relay.The lumbar adjustment can only be made withthe ignition switched ON.
Functional description The optional services relay J60 controlsthe heating circuit for the seats as well as the electric rear windowsand sun roof 3234128SeeE3060SUN ROOF . The coil for relay J60 is energized whenthe ignition is switched on (INT/A) by the line for fuse F6 of supplementaryfuse box B98 B, whilst the supply at the relay contact arrives fromthe battery, through the line for maxifuse J/B2 of B99. This supply passes through fuse F5 ofsupplementary fuse box B98 C which guarantees the protection ofthe circuit and reaches the switch on the seat via the connectionD70: the supply for the device is therefore controlled by the ignition(INT/A); and is also connected to earth. When the switch on the seat is pressed,command signals (positive and negative) are sent to the motor N38 :reversing the signals according to the contact which is closed determinesthe direction of the rotation of the actual motor.

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



Passenger side dashboard earth



C20A



C20A



C20B



C20B



C20B



C20B



Rear right earth



C31



C31



C31



C31



C31



C31



C31



Left seat connection



D70A



D70B



D70C



D70



D70



D70



D70



Right seat connection



D71A



D71B



D71



D71



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

Optional service relay



J60



J60



J60



J60



J60



Driver's seat lumbar adjustment motor



N38